The aim of this review is to provide a unified perspective of unilateral spatial neglect (USN). USN is a neurological disorder frequently observed following damage or diseases to the brain. It is particularly associated with strokes to specific anatomical structures within the right hemisphere. Patients with USN fail to respond to or orient towards stimuli located in the hemispace contralateral to the lesion. They also show peculiar behavioral manifestations. There are several distinct subtypes of USN which can affect sensory or motor modalities, spatial representations, the range of space, or pure imagery. This disorder can appear in any sensory modality but the majority of studies have investigated the visual aspect of USN in these subtypes. Theoretical proposals are supported by empirical evidence deriving from neuroimaging which distinguish between these subtypes of USN. Thus, the heterogeneity of the disorder is evident and clinical assessment methods face great difficulties while prevalence rates vary. The neural pathways of spatial attention distinguish between the ventral and dorsal visual streams, both with distinct functional roles and anatomical bases. Prism adaptation (PA) is a common rehabilitation technique among many others and has shown positive effects on USN while having some limitations. A general discussion and concluding remarks are presented in the final section followed by future research suggestions.

Submitted by CARLOS LEONARDO SACOMANI MARQUES (leonardomarques.fisioterapia@hotmail.com) on 2018-06-28T16:51:13Z No. of bitstreams: 1 Dissertacao Leonardo.pdf: 2058689 bytes, checksum: 1f1881acaef2c1dbbf01a2e66d1a0564 (MD5) / Approved for entry into archive by Luciana Pizzani null (luciana@btu.unesp.br) on 2018-06-28T18:23:32Z (GMT) No. of bitstreams: 1 marques_cls_me_bot.pdf: 2058689 bytes, checksum: 1f1881acaef2c1dbbf01a2e66d1a0564 (MD5) / Made available in DSpace on 2018-06-28T18:23:32Z (GMT). No. of bitstreams: 1 marques_cls_me_bot.pdf: 2058689 bytes, checksum: 1f1881acaef2c1dbbf01a2e66d1a0564 (MD5) Previous issue date: 2018-06-28 / Introdução: A negligência espacial unilateral (NEU) é uma manifestação prevalente entre os pacientes com acidente vascular cerebral, porém seu diagnóstico é difícil e sua mensuração e repercussão na vida do paciente carecem de métodos de avaliação. A escala de Catherine Bergego tem por objetivo mensurar esse acometimento e o impacto no cotidiano do paciente. Não há validação desta escala na população brasileira. Objetivo: Avaliar a confiabilidade, compreensão e aceitação da versão em português da escala CBS em paciente com diagnóstico clínico de negligência espacial unilateral após Acidente Vascular Cerebral. Método: CBS foi traduzida, culturalmente adaptada e aplicada por dois investigadores independentes. O estudo foi transversal, em 22 pacientes após AVC confirmado por neuroimagem, tomografia de crânio e/ou ressonância de encéfalo. tomografia computadorizada. Além da CBS, foi aplicada a NHISS na entrada do paciente no hospital e no momento da avaliação da CBS, a BIT para diagnóstico da NEU e Barthel. A consistência e coerência foram analisados por meio de α-Cronbach, confiabilidade interobservador por meio do Kappa e a correlação entre as escalas de CBS, BIT mRS, NIHSS e Barthel por meio do coeficiente de Pearson. Resultados: Foram avaliados 22 pacientes sendo encontrado consistência e coerência de  = 0,913, obtendo excelente consistência. Em análise de reprodutibilidade interobservador através do Coeficiente de Kappa, a escala para os 10 itens, mostrou uma confiabilidade razoável e alta entre os avaliadores. A CBS apresentou correlação negativa em comparação com á BIT, sendo que a taxa de concordância interobservador não diferiu significativamente entre as escalas. O resultado da correlação de Pearson realizada entre CBS e BIT foi de 0.03 para o avaliador 1 e 0.03 para o avaliador 2. Além da baixa correlação citada, não obtivemos boa correlação entre os demais escores das escalas de NIHSS, Barthel e Rankin, analisados através do coeficiente de Pearson. Conclusão: A CBS é adequada e validada para estudar pacientes com NEU após AVC em uma população brasileira, multicultural e de língua portuguesa. / Introduction: spatial unilateral neglect (SUN) is a prevalent clinical manifestation in stroke patients, however its diagnosis is difficult, also mensuration and repercussion in patients’ life lacks evaluation methods. Catherine Bergego’s scale (CBS) has the objective of evaluate the impact in quotidian life. There is no validation fo r this scale in Brazilian population. Objective: evaluate confiability, comprehension and acceptation of the Portuguese version of CBS for patients with clinical diagnosis of SUN after stroke. Methods: CBS was translated, culturaly adapted and applied by two independent investigators. It’s a transversal study that evaluated 22 patients with stroke diagnosis confirmed by computed tomography, and a previous score in modified Rankin (mRs) scale of 0. Besides CBS there was application of the National Institute of Health Stroke Scale (NIHSS) at patients’ admission. Together with the CBS the Behaviour Innatention Test (BIT) was applied for NEU diagnosis, and Bartel scale for independency in daily life. Consistency and consistency were analyzed using α-Cronbach, inter-observer reliability using Kappa and the correlation between the CBS, BIT mRS, NIHSS and Barthel scales using the Pearson coefficient. Results: Twenty-two patients were evaluated and was observed consistency and coherence of  = 0.913. In the intra-observer reproducibility analysis using the Kappa Coefficient, the scale for the 10 items showed a reasonable and high reliability among the evaluators. CBS had a negative correlation compared to BIT, and the inter-observer agreement rate did not differ significantly between scales. The result of the Pearson correlation between CBS and BIT was 0.03 for the evaluator 1 and 0.03 for the evaluator 2. In addition to the low correlation, we did not obtain a good correlation between the NIHSS, Barthel and Rankin, analyzed using the Pearson coefficient. Conclusion: CBS is adequate and validated to study patients with SUN after stroke in a Brazilian, multicultural and of Portuguese language.

Orientador: Rodrigo Bazan / Resumo: Introdução: A negligência espacial unilateral (NEU) é uma manifestação prevalente entre os pacientes com acidente vascular cerebral, porém seu diagnóstico é difícil e sua mensuração e repercussão na vida do paciente carecem de métodos de avaliação. A escala de Catherine Bergego tem por objetivo mensurar esse acometimento e o impacto no cotidiano do paciente. Não há validação desta escala na população brasileira. Objetivo: Avaliar a confiabilidade, compreensão e aceitação da versão em português da escala CBS em paciente com diagnóstico clínico de negligência espacial unilateral após Acidente Vascular Cerebral. Método: CBS foi traduzida, culturalmente adaptada e aplicada por dois investigadores independentes. O estudo foi transversal, em 22 pacientes após AVC confirmado por neuroimagem, tomografia de crânio e/ou ressonância de encéfalo. tomografia computadorizada. Além da CBS, foi aplicada a NHISS na entrada do paciente no hospital e no momento da avaliação da CBS, a BIT para diagnóstico da NEU e Barthel. A consistência e coerência foram analisados por meio de α-Cronbach, confiabilidade interobservador por meio do Kappa e a correlação entre as escalas de CBS, BIT mRS, NIHSS e Barthel por meio do coeficiente de Pearson. Resultados: Foram avaliados 22 pacientes sendo encontrado consistência e coerência de  = 0,913, obtendo excelente consistência. Em análise de reprodutibilidade interobservador através do Coeficiente de Kappa, a escala para os 10 itens, mostrou uma confiabilidade... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Introduction: spatial unilateral neglect (SUN) is a prevalent clinical manifestation in stroke patients, however its diagnosis is difficult, also mensuration and repercussion in patients’ life lacks evaluation methods. Catherine Bergego’s scale (CBS) has the objective of evaluate the impact in quotidian life. There is no validation fo r this scale in Brazilian population. Objective: evaluate confiability, comprehension and acceptation of the Portuguese version of CBS for patients with clinical diagnosis of SUN after stroke. Methods: CBS was translated, culturaly adapted and applied by two independent investigators. It’s a transversal study that evaluated 22 patients with stroke diagnosis confirmed by computed tomography, and a previous score in modified Rankin (mRs) scale of 0. Besides CBS there was application of the National Institute of Health Stroke Scale (NIHSS) at patients’ admission. Together with the CBS the Behaviour Innatention Test (BIT) was applied for NEU diagnosis, and Bartel scale for independency in daily life. Consistency and consistency were analyzed using α-Cronbach, inter-observer reliability using Kappa and the correlation between the CBS, BIT mRS, NIHSS and Barthel scales using the Pearson coefficient. Results: Twenty-two patients were evaluated and was observed consistency and coherence of  = 0.913. In the intra-observer reproducibility analysis using the Kappa Coefficient, the scale for the 10 items showed a reasonable and high reliability among the e... (Complete abstract click electronic access below) / Mestre

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No. of bitstreams: 1 luvizutto_gj_dr_bot.pdf: 2479589 bytes, checksum: 29a51ed15da908051b8667068b430e40 (MD5) Previous issue date: 2016-06-16 / Não recebi financiamento / Introdução: A negligência espacial unilateral (NEU) é caracterizada pela incapacidade de reportar ou responder pessoas ou objetos do lado contralateral à lesão cerebral, e ocorre principalmente após Acidente Vascular Cerebral (AVC) do lobo parietal direito, sendo associada à pior desfecho funcional à longo prazo. Objetivo: Os objetivos desta tese foram: normatizar os principais testes diagnósticos de NEU e verificar a relação com fatores sócio-demográficos na população brasileira; avaliar as variáveis bioquímicas que interferem na NEU na fase aguda do AVC; e revisar sistematicamente os principais tratamentos farmacológicos na NEU em pacientes após AVC. Método: Para o primeiro objetivo foi realizado estudo transversal em 150 indivíduos sem alterações neurológicas, sendo aplicados: teste face-mão (TFM), testes de cancelamento de linhas (TCL), cancelamento de estrelas (TCE) e bisseção de linhas (TBL). Os resultados dos testes foram relacionados com o perfil sócio demográfico da população, sendo estipulado pontos de cortes para a normalidade; para o objetivo 2 foi realizado estudo observacional em 40 indivíduos com diagnostico de NEU após AVC. Foram aplicados os TCL, TCE e TBL, sendo relacionado com o nível de hemoglobina na fase aguda do AVC corrigido para potenciais confundidores; para o objetivo 3 foi realizado revisão sistemática de literatura por meio de ensaios clínicos randomizados e quasi-randomizados para determinar o melhor tratamento farmacológico. Resultados: os resultados do objetivo 1 estão apresentados nos artigos 1 e 2; o objetivo 2 no artigo 3; e o objetivo 3 no artigo 4. Conclusão: Com base nos resultados obtidos dos artigos 1 e 2, o TFM apresenta taxa de normalidade entre 8 a 10 estímulos sensoriais, com prevalência de extinção associada com o grau de escolaridade e aumento da idade; no TCL o ponto de corte para considerar NEU é acima de 0 e no TCE acima de 2, ambos associados à idade. No TBL o ponto médio de corte para considerar NEU foi de 6,6 mm, associado com pior escolaridade. No artigo 3 foi observado que quanto menor o valor de hemoglobina na fase aguda do AVC, pior o desempenho nos testes de NEU; No artigo 4 foi observado que a efetividade e segurança dos tratamentos farmacológicos para NEU após AVC permanecem incertos, necessitando de ensaios clínicos randomizados adicionais para avaliar o efeito deste tratamento. / Background: Unilateral spatial neglect (USN) is characterized by the inability to report or respond to people or objects presented on the side contralateral to the lesioned side of the brain and has been associated with poor functional outcomes. Objective: The objectives of this thesis were: to standardize the USN tests and verify the relationship with socio-demographic data in the Brazilian population; evaluate the biochemical variables that influence in USN tests after acute stroke; and systematically review the pharmacological interventions to treat USN after stroke. Method: For the first aim, we performed a cross-sectional study of 150 individuals without neurological changes by applying: face-hand test (FHT), line cancellation test (LCT), star cancellation test (SCT) and line bisection test (LBT). The test results were related to the sociodemographic data, with cutoff points being stipulated to define USN; the second aim was achieved by conducting an observational study of 40 individuals with USN after acute stroke. The tests applied – LCT, SCT and LBT – were correlated with the hemoglobin level in the acute phase of stroke corrected by confounders; the third aim was analyzed by a systematic review of randomized controlled trials and quasi-randomized clinical trials to determine the efficacy of pharmacological intervention. Results: The first aim is presented in Articles 1 and 2, the second aim in Article 3 and the third in Article 4. Conclusion: Based on the results of Articles 1 and 2, the FHT shows normal rate between 8-10 sensory stimuli, with an extinction prevalence associated with the education level and increasing age; The LCT cutoff point to define is USN above 0 and SCT above 2, and both were associated with age. The LBT cutoff point to indicate NEU was 6.6 mm, associated with poorer education level. Article 3 reveals the relationship between a lower hemoglobin level in acute phase of stroke with worse performance on USN tests; Article 4 reports that the effectiveness and safety of pharmacological treatments for USN after stroke remain uncertain, requiring additional randomized clinical trials to evaluate the effect of treatment.

Orientador: Luiz Antônio de Lima Resende / Resumo: Introdução: A negligência espacial unilateral (NEU) é caracterizada pela incapacidade de reportar ou responder pessoas ou objetos do lado contralateral à lesão cerebral, e ocorre principalmente após Acidente Vascular Cerebral (AVC) do lobo parietal direito, sendo associada à pior desfecho funcional à longo prazo. Objetivo: Os objetivos desta tese foram: normatizar os principais testes diagnósticos de NEU e verificar a relação com fatores sócio-demográficos na população brasileira; avaliar as variáveis bioquímicas que interferem na NEU na fase aguda do AVC; e revisar sistematicamente os principais tratamentos farmacológicos na NEU em pacientes após AVC. Método: Para o primeiro objetivo foi realizado estudo transversal em 150 indivíduos sem alterações neurológicas, sendo aplicados: teste face-mão (TFM), testes de cancelamento de linhas (TCL), cancelamento de estrelas (TCE) e bisseção de linhas (TBL). Os resultados dos testes foram relacionados com o perfil sócio demográfico da população, sendo estipulado pontos de cortes para a normalidade; para o objetivo 2 foi realizado estudo observacional em 40 indivíduos com diagnostico de NEU após AVC. Foram aplicados os TCL, TCE e TBL, sendo relacionado com o nível de hemoglobina na fase aguda do AVC corrigido para potenciais confundidores; para o objetivo 3 foi realizado revisão sistemática de literatura por meio de ensaios clínicos randomizados e quasi-randomizados para determinar o melhor tratamento farmacológico. Resultados: os resul... (Resumo completo, clicar acesso eletrônico abaixo) / Doutor

L'objectif de cette thèse était d'étudier la modalité auditive dans le syndrome de négligence spatiale unilatérale (NSU) que ce soit dans l'évaluation ou dans la prise en charge. Notre première hypothèse défendue était que, bien que la NSU touche aussi la modalité auditive, des différences dues aux spécificités de chaque modalité existent entre les symptômes auditifs et visuels de ce syndrome neuropsychologique. En conséquence, notre seconde hypothèse était que les spécificités propres à la modalité auditive pourraient permettre de pallier les déficits attentionnels rencontrés en modalité visuelle et, donc, faire de cette modalité un support efficace pour la rééducation. Concernant l'évaluation des symptômes auditifs, les mécanismes d'orientation de l'attention en modalité auditive ainsi que la latéralisation de sons ont été explorés chez des patients atteints de NSU. Ces études ont souligné des difficultés dans les deux domaines dans la NSU. Concernant la réhabilitation, la place de l'audition, et plus particulièrement de la musique, dans les rééducations proposées aux patients atteints de NSU a été explorée. Enfin, un programme de rééducation basé sur la pratique musicale a été créé et testé auprès d'une patiente atteinte de NSU chronique. Celui-ci a montré des bénéfices à long-terme sur les signes visuels de la NSU mais également dans la vie quotidienne. Les résultats de ces études vont dans le sens des hypothèses et soulignent l'importance de prendre en compte la modalité auditive dans la pratique clinique que ce soit lors de l'évaluation du syndrome de NSU ou lors de sa réhabilitation. / The aim of this thesis was to focus on hearing in the evaluation and the rehabilitation of unilateral spatial neglect (USN) syndrome. USN not only affects the visual, but also the auditory modality. The first hypothesis of this thesis was that, due to the specificities of each modality, differences exist between the auditory and visual symptoms of USN. Consequently, the second hypothesis was that the specificities of the auditory modality could permit to compensate the attentional deficits that occur in the visual modality and, thus, make this modality an efficient tool for the rehabilitation. Concerning the evaluation of the auditory symptoms, orienting attention mechanisms in the auditory modality as well as sound lateralisation were explored with patients with USN. These studies showed patients with USN to have difficulties in both. Concerning the rehabilitation, the place of hearing, and in particular of music, in the re-educations in patients with USN was explored. Finally, a program based on music practice was developed and tested with a patient with a chronic USN. This patient showed long-term benefits on USN visual signs and also on daily activities. The results of these studies are consistent with the hypotheses and underline the importance of considering hearing in clinical practice either for the USN evaluation or for its rehabilitation.

La négligence spatiale unilatérale (NSU) est une affection neurologique fréquemment observée après une lésion de l'hémisphère cérébral droit. Les patients ne vont plus être en mesure de prendre en compte les stimuli présentés dans l'hémi-espace gauche. La NSU participe à l'aggravation du handicap des patients, par la réduction des possibilités en rééducation motrice et cognitive à la phase aigue d'un accident vasculaire comme sur le long terme. L'identification des facteurs prédictifs de sa chronicité pourrait permettre une meilleure prise en charge clinique de ces patients. Nous avons étudié les altérations des connexions anatomiques observées en IRM de diffusion sous-tendant la persistance de la NSU. Nos résultats démontrent qu'en plus d'un dysfonctionnement fronto-pariétal hémisphérique droit, la persistance de ce syndrome serait associée à une déconnexion interhémisphérique. L'hémisphère gauche isolé ne serait pas en mesure de compenser les déficits des patients. La récupération devrait s'effectuer par une amélioration dans les capacités d'échange des informations entre les deux hémisphères, notamment dans les régions postérieures pariétales et occipitales. Nous nous sommes intéressés à tester cette hypothèse par le biais d'une méthode de rééducation, l'adaptation prismatique (AP). Il s'agit d'une thérapie dont les effets sur la sémiologie des patients sont remarquables. Nos résultats suggèrent que l'amélioration de la NSU pourrait s'observer par le recrutement du réseau fronto-ponto-cérébelleux. Les régions frontales gauches seraient un relais anatomique entre le cervelet droit et le réseau fronto-pariétal gauche / Unilateral spatial neglect is a frequent neurological condition after right hemisphere damage. Patients behave as if objects on their left did not exist anymore. The presence of neglect has negative prognostic value for functional recovery in the acute and chronic phases after a stroke. Finding predictors of persistent neglect would permit to adapt rehabilitation procedures. We used diffusion MRI to define the state of anatomical connections in neglect and their predictor value for neglect persistence. Our results revealed that, together with right intra-hemispheric fronto-parietal disconnections, persistence of neglect is associated with inter-hemispheric disconnection. We concluded that an isolated left hemisphere may fail to compensate neglect because it cannot take into account left-sided objects. Recovery of neglect would instead occur thanks to the sharing of visual information between the two hemispheres, notably in posterior parietal and occipital cortices. We tested this hypothesis by using prism adaptation (PA) therapy. PA is a non-invasive and convenient technique to rehabilitate neglect. We showed that patients with damaged fronto-ponto-cerebellar pathways did not benefit from PA. This finding strongly suggests that PA can ameliorate signs of neglect by improving inter-hemispheric communication through enhanced activity of these connections. Left frontal areas may constitute the anatomical link between the right cerebellum and the left fronto-parietal network. Thus, connectional anatomy can help predict both neglect recovery and the quality of its response to rehabilitation therapies