INTRODUÇÃO: O teste de fluência verbal fonológica é uma tarefa neuropsicológica amplamente utilizada em estudos de neuroimagem funcional que analisam os circuitos neurais relevantes para a produção de linguagem. A maioria dos estudos que utilizam a RMf para analisar as áreas cerebrais de maior ativação durante a tarefa de fluência verbal é realizado na língua inglesa. Embora estudos anteriores tenham demonstrado que dependendo da língua falada possa ocorrer diferença de desempenho na tarefa de fluência verbal, ainda não está claro se esta diferença leva a mudanças do padrão de ativação cerebral. Há indícios na literatura que a ativação cerebral regional durante a tarefa de fluência verbal pode variar com o aumento de dificuldade da tarefa, sendo o cíngulo anterior a área cerebral que parece estar envolvida no processo de adaptação ao grau de dificuldade da tarefa. Estudos com sujeitos saudáveis demonstram também a influência de variáveis demográficas, como idade, escolaridade, gênero e classificação socioeconômica no desempenho na produção de palavras, com alguns estudos reportando maior ativação cortical nos homens em comparação às mulheres. OBJETIVOS: Avaliar os efeitos da variação do grau de dificuldade da tarefa de fluência verbal utilizando a técnica de ressonância magnética funcional. Analisar se há correlação entre os dados demográficos e o desempenho na tarefa de fluência verbal. Comparar o padrão de ativação cerebral entre os gêneros. MÉTODOS: Foram incluídos 21 voluntários saudáveis (12 homens), destros e falantes do português do Brasil como primeira língua. Foram colhidos dados sociodemográficos, neuropsicológicos e de desempenho dos voluntários. Comparamos os achados adquiridos através da técnica de ressonância magnética funcional durante a produção de palavras iniciadas com letras classificadas anteriormente como fáceis e difíceis para produzir palavras na língua portuguesa. As imagens foram adquiridas em aparelho de ressonância magnética de 1,5 T através de uma sequência de aquisição de imagens compressed epi que permite aos sujeitos produzirem as palavras apenas durante o período de silêncio do equipamento. As imagens foram analisadas através do software XBAM para os grupos e para a análise de correlação comportamental. RESULTADOS: A tarefa de fluência verbal engajou circuitos cerebrais incluindo córtex frontal medial e inferior esquerdo, putamen e tálamo (p<0,001). O aumento de dificuldade da tarefa de fluência verbal fonológica na língua portuguesa mostrou-se associado a uma diferença significativa de ativação apenas em uma região cerebral, o cerebelo (maior ativação durante a tarefa realizada com letras mais fáceis). Houve correlações significativas entre o desempenho na tarefa de fluência verbal fonológica na língua portuguesa e o grau de ativação do cíngulo anterior quando foram usadas letras difíceis para produção de palavras, mas não com letras fáceis. Não houve correlação significativa entre os dados demográficos (idade, escolaridade, gênero e classificação socioeconômica) e o desempenho durante a produção de palavras iniciadas com letras fáceis e com letras difíceis. Observamos maior ativação de cíngulo posterior e giro lingual nas mulheres em comparação aos homens durante a produção de palavras iniciadas com letras difíceis e interação positiva entre os gêneros e os graus de dificuldade na região de cíngulo anterior, demonstrando maior ativação do cíngulo anterior nos homens durante a produção de palavras iniciadas com letras difíceis. CONCLUSÃO: Apesar das diferenças lingüísticas, o padrão de ativação cerebral encontrado no nosso estudo foi consistente com o padrão verificado em outras línguas, com recrutamento de múltiplas áreas cerebrais durante a produção de palavras. Na língua portuguesa, assim como na língua inglesa, há indícios de que o aumento de dificuldade da tarefa está associado com maior engajamento de cíngulo anterior. Houve diferenças entre os gêneros em termos do engajamento de áreas cerebrais consideradas críticas para o desempenho na tarefa de fluência verbal fonológica, particularmente no cíngulo anterior / INTRODUCTION: Phonological verbal fluency is a neuropsychological test used in numerous functional neuroimaging studies to allow the assessment of the neural circuits relevant to language production. The majority of studies that use functional magnetic resonance imaging (fMRI) to analyze the cerebral areas with greater activation during the verbal fluency task have been carried out in English. Although there is evidence that the verbal fluency performance varies as a function of the spoken language, it is unclear if this difference is associated with differences in cerebral activation patterns. Added to that, there is neuroimaging evidence that patterns of regional cerebral activation during VF task may vary with task demand. In particular, the anterior cingulate cortex seems critical to the adaptation process to the level of difficult. Studies of healthy individuals have demonstrated the influence of demographic variables, such as age, level of education, gender and socio-economic status, on word production performance, and some authors have shown greater cortical activation in men than in women. OBJECTIVES: To use the fMRI technique to evaluate the effect of varying levels of difficult of verbal fluency task on the brain activation patterns in healthy subjects. To analyze whether there is a significant correlation between demographic variables and verbal fluency performance. To compare cerebral activation patterns between genders. METHODS: We recruited 21 (12 men) right-handed healthy volunteers, having Portuguese as their first language. Demographic, neuropsychological and behavioral data were collected. We compared fMRI data acquired during production of words beginning with letters classified as easy or hard for word production in Portuguese. Images were acquired in 1,5 T magnet through a clustered image acquisition sequence that allowed overt verbal responses to be made in the absence of scanner noise. Data were analyzed through XBAM software on group basis and for behavioral correlation. RESULTS: The phonological verbal fluency task engaged a network including the left inferior and middle frontal cortices, putamen and thalamus (p<0.001). The hard condition was associated with greater anterior cingulate activation than the easy condition when associated with the performance, as previously demonstrated in studies carried out with English speaking subjects. Increased phonological verbal fluency task demand in Portuguese was associated with activation differences in only one brain region, namely the cerebellum (in the direction of greater activation during performance of the task with easy letters). There were significant correlations between phonological verbal fluency task performance in Portuguese and the intensity of anterior cingulate activation, when hard letters to produce words were used (but not with easy letters). There were no significant correlations between demographic variables and the performance during production of words beginning with easy or difficult letters. There was greater activation of the posterior cingulate cortex during the production of words beginning with the difficult letters in women than in men. There was also a significantly positive interaction between gender and level of difficult in anterior cingulate cortex, with men showing greater activation of this brain region during the word production beginning with difficult letters relative to women. CONCLUSIONS: Despite grammatical differences, the patterns of cortical activations observed in our study were in accordance with fMRI studies of phonological verbal fluency task carried out in other languages, with recruitment of a set of distributed cerebral areas during the word production. There is evidence that increased task demand is associated with greater engagement of the anterior cingulate cortex in Portuguese, similarly to the patterns previously observed in English. There were gender differences in regard to the engagement of brain regions seen as critical to verbal fluency performance, particularly in the anterior cingulate cortex

Mesmo quando adequadamente medicados pacientes com transtorno bipolar (TB) apresentam elevadas taxas de recaída, considerável sintomatologia residual e prejuízo funcional. Intervenções psicoterápicas têm sido propostas com intuito de aumentar o período de remissão e reduzir sintomas de humor, porém os achados iniciais ainda são controversos e pouco se sabe sobre a eficácia de tais intervenções em desfechos funcionais. Ao mesmo tempo diversos estudos apontam para um prejuízo cognitivo entre uma parcela significativa destes pacientes que perdura mesmo na fase eutímica. A Neuropsicologia clínica oferece instrumentos para quantificar este prejuízo e melhor compreender os achados de ensaios clínicos em psicoterapia no TB. Diversos autores desenvolveram intervenções de reabilitação cognitiva a fim de melhorar tanto o prejuízo cognitivo e funcional bem como diminuir sintomatologia depressiva, porém os achados até o momento não apresentam evidência de uma eficácia robusta. Dessa forma, novas intervenções psicoterápicas se mostram necessárias. Desenvolvemos um novo protocolo de psicoterapia em grupo baseado na experiência prévia do grupo que objetiva prevenir novos episódios e melhorar a performance cognitiva e funcionalidade dos pacientes com TB. Metodologia: Foram incluídos 60 pacientes neste ensaio clínico cego controlado randomizado com portadores de TB tipo I ou II que se encontravam em uso de tratamento farmacológico padrão. O grupo controle foi mantido apenas em uso de tratamento padrão e o grupo experimental, além desse participou de 12 sessões semanais desta nova intervenção chamada de Reabilitação Cognitivo Comportamental (RCC). Inicialmente todos participantes eram avaliados para presença de episódios de humor, funcionalidade e desempenho cognitivo o que foi repetido após 12 semanas e nove meses do início da fase interventiva, totalizando 12 meses de seguimento. Resultados: Ao todo 39 pacientes fora incluídos nas análises finais e 21 foram excluídos, não havendo diferença entre os grupos para as perdas de indivíduos. Trinta e nove pacientes foram randomizados sendo que 20 participaram das sessões de RCC e 19 mantidos sobre tratamento padrão e todos participaram das reavaliações após o fim das 12 semanas de tratamento, porém o período de 12 meses não foi atingido por todos os participantes e, assim são apresentados os resultados parciais do pós-tratamento. Não houve diferença entre os grupos para tempo até novo episódio de humor bem como nas escalas de funcionalidade e de qualidade de vida. O grupo de RCC melhorou seu desempenho no reconhecimento total de emoções e reduziu seu tempo de reação. Conclusão: A nova intervenção proposta não foi eficaz na prevenção de novos episódios de humor no transtorno bipolar embora pareça melhorar de forma específica alguns domínios cognitivos comumente reportados como prejudicados no TB / Even when correctly medicated patients with bipolar disorder (BD) continue to present high rates of relapse, considerable residual symptomatology and functional impairment. Psychotherapeutic interventions have been proposed aiming to increase the remission period and reduce mood symptoms, however initial results are still controversial and little is known about the effectiveness of such interventions in functional outcomes. At the same time, several studies point to cognitive impairment among a significant portion of these patients that lasts even in the euthymic phase. Clinical Neuropsychology offers tools to quantify this impairment and to better understand the findings of clinical trials in psychotherapy in BD. Authors have developed cognitive rehabilitation interventions to improve both cognitive and functional impairment as well as reduce depressive symptoms, but the findings so far have not provided evidence of robust efficacy. Thus, new psychotherapeutic interventions are needed. We developed a new protocol in group psychotherapy based on previous experience of the group aiming at preventing new episodes and improving cognitive performance and functionality of patients with TB. Method: Sixty patients were included in this randomized controlled clinical trial with type I or II TB patients who were using standard pharmacological treatment. The control group was maintained only on standard treatment and the experimental group, in addition to this, participated in 12 weekly sessions of this new intervention called Cognitive Behavioral Rehabilitation (RCC). Initially all participants were evaluated for episodes of mood, functionality and cognitive performance, which was repeated after 12 weeks and nine months after the beginning of the intervention phase, totaling 12 months of follow-up. Results: A total of 39 patients were included in the final analysis and 21 were excluded, with no difference between groups for the loss of individuals. Thirty-nine patients were randomized, 20 of which participated in RCC sessions and 19 maintained on treatment as usual and all participated in the re-evaluations after the end of the12-week treatment, but the 12-month period has not been reached by all participants and therefore we present the preliminary results of the post-treatment. There was no difference between groups for time to new mood episode as well as for functional and quality of life scales. The RCC group improved their performance in total recognition of emotions and reduced their reaction time. Conclusion: The new proposed intervention was not effective in preventing new mood episodes in bipolar disorder although it seems to improve in a specific way some cognitive domains commonly reported as impaired in TB

Made available in DSpace on 2014-12-17T15:39:06Z (GMT). No. of bitstreams: 1 SamanthaSAM_DISSERT.pdf: 2335718 bytes, checksum: c39ea0cf4b8a039d34d11d3360a230a1 (MD5) Previous issue date: 2014-04-25 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / O ano de 2013 marca o 70? anivers?rio da descri??o cl?ssica de Leo Kanner sobre o Autismo. Em 1994, na quarta edi??o do Manual Diagnostico e Estat?stico de Transtornos Mentais (DSM), o autismo foi inclu?do em uma nova classe diagn?stica denominada Transtornos Globais do Desenvolvimento (TGD), os quais incluem: o Transtorno Autista, Transtorno de Rett, Transtorno Desintegrativo da Inf?ncia, Transtorno Global do Desenvolvimento sem outra especifica??o e o Transtorno de Asperger. O DSM apresenta crit?rios bem espec?ficos que diferenciam os TGD, no entanto, estudos m?dicos discutem se o Transtorno de Asperger (TA) comp?e o Transtorno Autista, ou se ? qualitativamente distinto. Discute-se a reduzida valida??o emp?rica dos crit?rios diagn?sticos concernentes ao TA. Nessa perspectiva, o DSM ganhou uma quinta e pol?mica revis?o no ano de 2013. A pol?mica mudan?a centra-se na substitui??o de uma an?lise diagn?stica categorial para uma abordagem dimensional, a qual evidencia que a maior parte dos problemas psicopatol?gicos da inf?ncia e adolesc?ncia manifesta-se em um cont?nuo de frequ?ncia e intensidade. Diante da mudan?a na quinta edi??o do DSM, o presente estudo deparou-se com a problem?tica identificada no ?mbito cl?nico e cient?fico, qual seja, a heterogeneidade sintom?tica presente no espectro autista e, por conseguinte, as disson?ncias no estabelecimento de caracter?sticas cl?nicas e neuropsicol?gicas do espectro. Amparado pelo legado te?rico de Luria, buscou-se clarificar o perfil da cogni??o social, comportamento, s?cio afetividade e fun??es executivas em crian?as com diagn?stico de Transtorno Autista e Transtorno de Asperger, conforme crit?rios estabelecidos pelo quarta edi??o revisada do DSM. Para operacionaliza??o dos objetivos propostos, prop?s-se estudo multicasos de seis crian?as. O processo avaliativo foi composto por anamnese com os pais, entrevista com a escola e protocolo avaliativo composto por tarefas qualitativas e instrumentos psicom?tricos. A avalia??o neuropsicol?gica realizada foi guiada pela an?lise cl?nica-processual, conforme pressuposto te?rico de Luria. No tocante aos resultados, foi poss?vel identificar dificuldades nos relacionamentos sociais e no cotidiano escolar das crian?as avaliadas. De modo interdependente, falhas na teoria da mente, nas fun??es executivas e na linguagem versam como principais fragilidades neuropsicol?gicas dos grupos cl?nicos vigentes, notadamente do grupo que comp?e o Transtorno Autista. Os resultados encontrados demonstram que a cogni??o social e a habilidade social est?o altamente relacionadas. Ainda que se reconhe?am as limita??es inerentes ? proposi??o de pesquisas neuropsicol?gicas de vertente cl?nica/s?cio hist?rica, acredita-se que o desenho metodol?gico possibilitou compreender caracter?sticas neuropsicol?gicas das crian?as avaliadas, sem limitar-se ? mera descri??o. Espera-se que pais, profissionais cl?nicos e institui??es sociais, como a escola, compreendam a forma de individua??o do TGD, antes de classificarem ou proporem tratamentos as crian?as

OBJETIVOS: Analisar se os testes neuropsicológicos de atenção e funções executivas apresentam correlação, em crianças com TDAH subtipo combinado, com o diagnóstico e evolução clínica após tratamento com metilfenidato, e propor um protocolo, com testes mais significantes. MÉTODOS: Neste estudo longitudinal foram selecionados 23 meninos, nove a 12 anos de idade, diagnóstico de TDAH sem comorbidades, estabelecido segundo os critérios do DSM-IV, QI >= 89, não previamente medicados para TDAH, que soubessem ler e escrever e estivessem em acompanhamento no Ambulatório de Distúrbios de Aprendizagem do Hospital das Clínicas da FMUSP. Foram utilizados os seguintes instrumentos: Escala de Inteligência Wechsler para Crianças (WISC III), Teste Psicofísico Para Atenção Visual Voluntária (TPAVV), Teste de Cancelamento, Teste das Trilhas partes A e B, Teste de Stroop e Teste de Atenção Visual - Terceira Edição (TAVIS 3R). O experimento corresponde a duas etapas: avaliações clínica e neuropsicológica da atenção e das funções executivas dos pacientes com TDAH; e reavaliação, com os mesmos testes, após três meses de terapia medicamentosa, usando-se metilfenidato. Comparou-se o desempenho dos testes, com o grupo controle (n=30), também avaliado em dois momentos, com mesmo intervalo de tempo. A escala SNAP-IV também foi comparada entre os pacientes e grupo controle nas mesmas condições. RESULTADOS: O desempenho dos pacientes, quando não medicados, foi inferior aos dos controles, nos seguintes testes: subtestes do WISC III código p < 0,001; dígitos p < 0,001 e span dígitos ordem inversa p < 0,001. TPAVV seta direita válida p < 0,001; seta fixa válida p < 0,001; seta alternada válida p < 0,001 e seta alternada inválida p < 0,001. Teste de Cancelamento, tempo de execução prancha II p=0,001 e erros por omissão pranchas I e III p=0,002. Teste das Trilhas, tempo de execução parte A p=0,032. Teste de Stroop, tempo de execução cartão retângulo p=0,016 e erros cartão cor p=0,017. TAVIS 3R, erros por omissão na tarefa 1 p < 0,001, tempo de reação na tarefa 2 p=0,001, erros por omissão na tarefa 2 p < 0,001, erros por ação na tarefa 2 p=0,097 e tempo de reação tarefa 3 p < 0,001. Após tratamento medicamentoso, o grupo TDAH apresentou menos erros quando comparado com ele mesmo sem metilfenidato. Excluindo-se os testes, cuja melhora foi atribuída a efeito aprendizado, após reavaliação dos controles, os testes com significância estatística foram: subtestes do WISC III aritmética p < 0,001; dígitos p < 0,001 e span dígitos ordem inversa p < 0,001. TPAVV, a maioria das tarefas com p < 0,001, exceto seta direita inválida e seta alternada inválida. Teste de Cancelamento, tempo de execução prancha II p < 0,001 e erros por omissão prancha I p < 0,001. Teste das Trilhas, tempo de execução parte B p < 0,001. Teste de Stroop tempo de execução cartão retângulo p=0,005 e ; tempo de execução cartão palavras p=0,001 e erros cartão cor p < 0,001. TAVIS 3R, erros por omissão e ação tarefa 1 p < 0,001; tempo de reação , erros por omissão e ação tarefa 2 p < 0,001 e tempo de reação tarefa 3 p < 0,001.Tanto para SNAP-IV, preenchido pelos pais e professores, foi observada melhora significante, com p < 0,001. A análise pela curva ROC (Receiver Operator Characteristic Curve), apontou os seguintes testes como os mais significativos, em ordem decrescente de importância: TPAVV seta fixa válida (0,961), tempo de reação tarefa 3 TAVIS 3R (0,955), TPAVV seta à direita inválida (0,954), TPAVV seta alternada válida (0,948) e seta à esquerda válida (0,943) , subteste do WISC III completar figuras (0,938), tempo de reação tarefa 2 TAVIS 3R (0,915), subteste do WISC III aritmética (0,899), TPAVV seta à direita válida (0,893), tempo de execução Teste de Stroop cartão palavras (0,891), TPAVV seta fixa inválida (0,886), subteste do WISC III dígitos (0,885), erro Teste de Stroop cartão cor (0,882), subtestes do WISC III span dígitos ordem inversa (0,870) e código (0,865), tempo de reação tarefa 1 TAVIS 3R (0,844), tempo de execução do Teste das Trilhas Parte B (0,843), TPAVV seta alternada inválida (0,832), erros por omissão tarefa 2 TAVIS 3R (0,826), tempo de execução Teste das Trilhas Parte A (0,812), subteste do WISC III informação (0,817), tempo de execução Teste de Cancelamento prancha III (0,816) e erros por ação tarefa 2 TAVIS 3R (0,810). CONCLUSÃO: A análise dos questionários SNAP-IV, antes e após tratamento, evidenciou sinais inequívocos de melhora clínica, após tratamento medicamentoso. A presença de déficits atencionais e de funções executivas, nos meninos com TDAH de nove a 12 anos em relação ao grupo controle, e a observação da melhora significante após terapêutica com metilfenidato, em vários dos testes utilizados, demonstraram a importância desse tipo de avaliação, o que permitiu propor uma bateria seletiva de testes neuropsicológicos para a avaliação e acompanhamento da terapêutica de crianças com TDAH / PURPOSES: To determine whether neuropsychological tests of attention and executive functions present correlations, in children with ADHD combined subtype, with the diagnosis and clinical outcome after treatment with methylphenidate, and to propose a protocol, with the most significant tests. METHODS: In this longitudinal study we selected 23 boys, aged between nine and 12 years old, with ADHD without comorbidities diagnosed according to the DSM-IV, IQ>=89, not previously treated for ADHD, who could read and write and were in monitoring in the Learning Disorders Ambulatory, at FMUSP Hospital das Clínicas. The following instruments were used: Wechsler Intelligence Scale for Children (WISC III), Voluntary Visual Attention Psychophysical Test (VVAPT), Cancellation Test, Trail Making Test Parts A and B, Stroop Test and Visual Attention Test - Third Edition (TAVIS 3R). The experiment corresponds to two stages: clinical and neuropsychological assessments of attention and executive functions in patients with ADHD; and reassessment, with the same tests after three months of drug therapy using methylphenidate. We compared the performance on the tests with that of the control group (n = 30) also evaluated in two stages, with the same time interval. SNAP-IV scale was also compared between subjects and control group under the same conditions. RESULTS: When the subjects were not medicated, their performance was poorer than the control group\'s, on the following tests: WISC III subtests coding p<0.001; digits p<0.001 and digits span backward p<0.001. VVAPT valid pointer to the right p<0.001; valid fixed pointer p<0.001; valid alternate pointer p<0.001 and invalid alternate pointer p<0.001. Cancellation Test, execution time on board II p=0.001 and omission errors on boards I and III p=0.002. Trail making Test, execution time part A p=0.032. Stroop Test, execution time dots card p=0.016 and errors color card p=0.017. TAVIS 3R, omission errors on task 1 p<0.001, reaction time on task 2 p=0,001, omission errors on task 2 p<0.001 and reaction time on task 3 p<0.001. After medication treatment, the ADHD group present fewer errors when compared to itself without methylphenidate. Excluding the tests, whose improvement was attributed to learning, after controls were reassessed, the tests with statistical significance were: WISC III subtests arithmetic p<0.001; digits p<0.001 and span digits backward p<0.001. VVAPT, most tasks with p<0.001, except invalid pointer to the right and invalid alternate pointer. Cancellation Test, execution time board II p<0.001 and omission errors board I p<0.001. Trail Making Test, execution time part B p<0,001. Stroop Test, execution time dots card p=0.005, words card p=0.001 and errors color card p<0.001. TAVIS 3R, omission and commission errors task 1 p<0.001; reaction time, omission and commission errors task 2 p<0.001 and reaction time task 3 p<0.001. For SNAP-IV, filled by parents and teachers, a significant improvement was observed, with p<0.001. The analysis of the ROC curve (receiver operator characteristic curve) showed the following tests as being the most significant ones, in decrescent order of importance: VVAPT valid fixed pointer (0.961), reaction time task 3 TAVIS 3R (0.955), VVAPT invalid pointer to the right (0.954), VVAPT valid alternate pointer (0.948) and valid pointer to the left (0.943), WISC III picture completion subtest (0.938), reaction time task 2 TAVIS 3R (0.915), WISC III arithmetic subtest (0.899), VVAPT valid pointer to the right (0.893), execution time Stroop Test word card (0.891), VVAPT invalid fixed pointer (0.886), WISC III subtest digits (0.885), error Stroop color card (0,882), WISC III subtests span digits backward (0,870) and coding (0.865), reaction time task 1 TAVIS 3R (0,844), execution time of Trail Making Part B (0.843), VVAPT invalid alternate pointer (0.832), omission errors task 2 TAVIS 3R (0,826), execution time Trail Making Test Part A (0.812), WISC III information subtest (0.817), execution time Cancellation Test board III (0.816) and commission errors task 2 TAVIS 3R (0,810). CONCLUSION: The analysis of the SNAP-IV questionnaires, before and after treatment, showed unmistakable signs of clinical improvement after medication treatment. The presence of attention deficits and executive functions, in children with ADHD aged from nine to 12 years old compared to the control group, and the observation of significant improvement after treatment with methylphenidate, in several of the tests used, demonstrated the importance of this type of evaluation, which enabled proposing a selective set of neuropsychological tests for the assessment and therapeutic follow-up of children with ADHD therapy

L’objectif de cette thèse était d’étudier les fonctions exécutives dans la maladie de Parkinson et leurs implications dans la conduite automobile. Nous avons mesuré séparément les fonctions de flexibilité mentale et de mise à jour par des tests neuropsychologiques et des tâches sur simulateur de conduite. Nous avons fait l’hypothèse que ces fonctions étaient plus altérées chez les patients et que leurs déficits influençaient la performance de conduite. Trois études ont été réalisées : les deux premières sur simulateur et la dernière sur route avec un véhicule instrumenté. Les résultats de la première étude ont montré un déficit de la fonction de mise à jour chez les patients par rapport aux contrôles. La deuxième étude consistait à tester une seconde fois les conducteurs deux ans après la première étude. En deux ans, la fonction de flexibilité s’est dégradée chez les patients, suggérant que les deux fonctions étudiées ont évolué différemment : la mise à jour étant atteinte plus précocement dans la maladie. Les patients déclaraient également avoir restreint leur conduite. Les résultats de la troisième étude sur route ont permis d’identifier les conducteurs parkinsoniens à « risque » d'être dangereux, i.e. ceux ayant le plus de difficultés en conduite (évaluation conjointe de l’expérimentateur et du moniteur d’auto-école). Les conducteurs à « risque » avaient des performances plus faibles aux tests de mise à jour et de flexiblité par rapport aux conducteurs parkinsoniens sécuritaires. L’ensemble de ces travaux mettent en évidence le rôle essentiel de la mise à jour et de la flexibilité mentale dans la conduite automobile chez des personnes atteintes de la maladie de Parkinson. / The objective of this thesis was to investigate executive functions in Parkinson’s disease and their implications on driving. We have chosen to separately assess mental flexibility and updating information in working memory by neuropsychological tests and driving simulator tasks. We tested the hypothesis that these two executive functions were impaired in patients and that their deficits influenced the driving performance. Three studies were realised: the first two used the driving simulator and the last was performed on-road with an instrumented vehicle. Results of the first study have shown an updating impairment in patients compared to controls. The second study consisted of assessing the drivers a second time two years after the first study. In two years, the flexibility function declined in patients, suggesting that the two selected functions did not change in a similar way: updating is affected earlier in the disease than mental flexibility. Also, patients declared to have restricted their driving. Results of the third on-road study allowed us to identify “at-risk” drivers with Parkinson’s disease, that is to say those having the most driving difficulties (assessment from both experimenter and a driving instructor). At-risk drivers had poorer performances in updating and flexibility tasks compared to “safe” drivers. All of these studies emphasised the essential role of updating and mental flexibility in driving in people with Parkinson’s disease.

Sabe-se que a epilepsia do lobo temporal associada à esclerose hipocampal (ELT-EH) é uma síndrome epiléptica frequente e de difícil controle medicamentoso. Além disso, esta condição acarreta em uma série de prejuízos cognitivos aos seus portadores antes e após a cirurgia para tratamento das crisesrefratárias. Alguns trabalhos mostram que o prognóstico cognitivo pode mudar dependendo da abordagem cirúrgica realizada. Dessa forma, este trabalho teve como objetivo verificar qual o papel do polo temporal no funcionamento cognitivo. Para isso, foi realizada uma análise retrospectiva dos prontuários médicos de 146 pacientes adultos com ELT-EH esquerda, destros, avaliados no Centro de Cirurgia de Epilepsia (CIREP) do Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto (HCFMRP) - Universidade de São Paulo (USP). Os resultados mostraram um melhor desempenho na tarefa de nomeação por confronto visual nos pacientes que passaram por lobectomia temporal esquerda sem ressecção do polo (p=0.007). Quando realizada da análise do índicede mudança confiável (RCI) para verificar a relevância clínica dos achados, 39,4% dos pacientes que passaram pela cirurgia com ressecção do polo temporal mostraram uma piora significativa de desempenho no teste de nomeação por confronto visual no Boston Naming Test (BNT), enquanto apenas 16% dos que passaram pela cirurgia sem ressecção do polo mostraram piora significativa no mesmo teste (p=0.015). No entanto, este mesmo grupo mostrou um pior prognóstico de controle de crises quando comparado ao grupo com ressecção do polo (p=0.018). Assim, esses dadosindicam que o polo temporal pode estar envolvido em habilidades de nomeação. Nossos resultados sugerem, portanto, que a cirurgia para o tratamento das crises refratárias nos pacientes com ELT-EH esquerda poderiam considerar as diferenças individuais para decidir a melhor abordagem cirúrgica para cada paciente / It is known that the temporal lobe epilepsy (TLE) associated with hippocampal sclerosis (HS) is a frequent epileptic syndrome with difficult medication control. In addition, this condition leads to a series of cognitive impairments to patients before and after surgery for the treatment of refractory crises. Studies shown that cognitive prognosis may change depending on the surgical approach. Thus, this study aimed to verify the role of temporal pole in cognitive functions. A retrospective analysis of medical records from 146 adult patients with left-sided TLE-HS - evaluated at the Center for Epilepsy Surgery (CIREP) of the Clinical Hospital from Ribeirão Preto Medical School was performed. The results showed a higherperformance on visual confrontation namingtests - according to the Boston Naming Test (BNT) - in patients submitted to left temporal lobectomy without pole resection (p=0.007). Reliable change index (RCI)analysis, for clinical relevance,revealed that 39.4% of the patients submitted to temporal pole resectionshowed significantly worse performance on visual confrontation naming and only 16% of the patients without pole resection were significantly worse in the same test (p=0.015). However, this same group showed a worse prognosis of crisis control when compared to the group with pole resection (p=0.018). Altogether, the present study suggest that the temporal pole may be involved in naming skills. Our results suggest that surgery for left TLE-HS should be performed considering individual differences to decide the best surgical approach for each patient

<p>In order to study internationally adopted delinquents, internationally adopted controls, delinquent controls and an additional group of healthy non-adopted, non-delinquent controls, the following tests were used: WISC/WAIS, TOL, WCST, a questionnaire, I think I am, ISSI, an attachment test, KSP, and SCL-90. In the register study, data were obtained from the registers of The National Board of Health and Welfare and Statistics Sweden and multivariate analyses were performed using logistic regression models. Odds ratios (OR) for different forms of out-of-home care placements were calculated.</p><p>It was found that the adopted delinquents had a significantly lower full scale IQ (WISC/WAIS) and significantly lower results on several measurements in the WISC /WAIS compared to the adopted controls. In addition, both groups of adoptees scored low in the WISC/WAIS subscale arithmetics when compared to the population mean. The adopted delinquents clearly had disruptive and infectious relations to their parents which was demonstrated in I think I am, ISSI, the attachment test and the questionnaire. The adopted controls demonstrated good relations to adoptive parents. When personality and self-perception were measured and analyzed in a two-way ANOVA, the results clearly pointed to ”delinquency” as the explaining factor to the variance of the results as opposed to ”adoption”. </p><p>Finally, the regression analyses of the register data demonstrated an OR of 3.0 (after adjustments for age and sex) for placements of intercountry adoptees in residental care from age 10 and an OR of 5.1 in model 2 (after adjustments for socio-demographic background variables). More over, higher child age at adoption, origin from Latin America, single parent adoption and maternal age above 35 at birth of the child were identified as significant predictors of out-of-home care from age 10.</p>

The aim of this doctoral thesis was to study the influence of memory, pain, age and education on the regional cerebral blood flow (rCBF), i.e. brain function, in early Alzheimer's disease (AD) and in chronic neck pain patients in comparison to healthy controls and in healthy elderly per se. This was done by optimizing single photon emission computed tomography (SPECT) as a method to study rCBF with the tracer Technetium-99m (99mTc) hexamethylpropyleneamine oxime (HMPAO) and by matching all image data to a brain atlas before evaluation. The rCBF-SPECT was evaluated and developed to obtain higher diagnostic accuracy in AD and in chronic neck pain patients it was used to study basic pain related cerebral processes in chronic pain of different origin. A new semimanual registration method, based on fiducial marker, suitable for investigations with low spatial resolution was developed. The method was used to reconstruct images with an improved attenuation and scatter correction by using an attenuation-map calculated from the patients' previously acquired CT images. The influence of age and education on rCBF was evaluated with statistical parametric mapping, SPM in healthy elderly. The main findings were age related changes in rCBF in regions close to interlobar and interhemispheric space but not in regions typically affected in early AD, except for the medial temporal lobe. The theory of a 'cognitive reserve' in individuals with a longer education was supported with findings in the lateral temporal lobe, a region related to semantic memory, and in the frontal lobe. A cross-sectional study of chronic neck pain patients showed extensive rCBF changes in coping related regions in a non-traumatic pain patients compared to both healthy and a pain group with a traumatic origin, i.e. whiplash syndrome. The whiplash group displayed no significant differences in rCBF in comparison with the healthy controls. This suggests different pain mechanisms in these groups. The AD-patients showed a significantly lower rCBF in temporoparietal regions including left hippocampus. These changes were associated to episodic memory performance, and especially to face recognition. The diagnostic sensitivity for AD was high. The face recognition test (episodic memory) was used in AD patients to improve the sensitivity of method, i.e. memory-provoked rCBF-SPECT (MP-SPECT). The results were compared to healthy controls and the reductions of rCBF in temporoparietal regions were more pronounced in mild AD during provocation. Memory provocation increased the sensitivity of AD-related rCBF changes at group level. If a higher sensitivity for AD at the individual level is verified in future studies, a single MP-SPECT study might then be of help to set diagnosis earlier. In conclusion rCBF in temporoparietal regions are associated to an impaired episodic memory in early AD. Changes in these regions do not have a strong connection to chronological age. The diagnostic sensitivity of rCBF-SPECT in AD is high and there is a potentially higher sensitivity if memory provoked investigations are used. The findings in this thesis have given an increased knowledge of underlying cerebral pain processing in non-traumatic and traumatic (whiplash) neck pain. Preliminary results supporting the theory of 'cognitive reserve' by showing a correlation between long education and preserved rCBF was found in healthy elderly.

In order to study internationally adopted delinquents, internationally adopted controls, delinquent controls and an additional group of healthy non-adopted, non-delinquent controls, the following tests were used: WISC/WAIS, TOL, WCST, a questionnaire, I think I am, ISSI, an attachment test, KSP, and SCL-90. In the register study, data were obtained from the registers of The National Board of Health and Welfare and Statistics Sweden and multivariate analyses were performed using logistic regression models. Odds ratios (OR) for different forms of out-of-home care placements were calculated. It was found that the adopted delinquents had a significantly lower full scale IQ (WISC/WAIS) and significantly lower results on several measurements in the WISC /WAIS compared to the adopted controls. In addition, both groups of adoptees scored low in the WISC/WAIS subscale arithmetics when compared to the population mean. The adopted delinquents clearly had disruptive and infectious relations to their parents which was demonstrated in I think I am, ISSI, the attachment test and the questionnaire. The adopted controls demonstrated good relations to adoptive parents. When personality and self-perception were measured and analyzed in a two-way ANOVA, the results clearly pointed to ”delinquency” as the explaining factor to the variance of the results as opposed to ”adoption”. Finally, the regression analyses of the register data demonstrated an OR of 3.0 (after adjustments for age and sex) for placements of intercountry adoptees in residental care from age 10 and an OR of 5.1 in model 2 (after adjustments for socio-demographic background variables). More over, higher child age at adoption, origin from Latin America, single parent adoption and maternal age above 35 at birth of the child were identified as significant predictors of out-of-home care from age 10.

During the last 20 years a new category of schools, schools for children with special needs, has settled to be a growing part of the Swedish school system. This is despite the political aim in Sweden to achieve an educational inclusion. The aim of this study is to compare the school situation for children with special needs in regular schools with the situation in schools for children with special needs. To investigate the routines associated with the change of school and the role of a neuropsychological diagnosis in the process. The main research questions were if the school is adapted to the needs of the child from a neuro-didactic point of view, whether the special school provides something the public school doesn’t and if the diagnosis helps to take pedagogical measures. The method used in this study is semi-structured interviews. The theory of inclusion and the neurological function constitute the theoretical frame. The result of the study shows that the special schools which provide a supportive social and educational environment are better adapted to the children with special needs. However, the difficulties associated with changing school are huge. A neuropsychological diagnosis might be helpful when the decisions about special assistance are made, but the choice of particular assistance is made on other premises. The conclusion is that as long as the regular schools aren’t adapted for all children and the neurological knowledge isn’t taken into account, it will be crucial for a number of pupils to be taught in special schools.