The aim of this thesis was to evaluate the influence of Vojta's reflex locomotion on the activity of the shoulder girdle's muscles with surface electromyography. We also observed the activity of some of the trunk's muscles. We tested phasic and support function of the upper extremity in several movements on 15 healthy people. It didn't bring many significant values. It could be caused by different sensitivities of the participants for the stimulation, the short time of the stimulation, individual motoric stereotypes or not so strongly expressed muscle dysbalantion within healthy individuals.

Title of diploma thesis: Tactile discrimination and excitability of alpha motoneurons Objectives: The aim of this thesis is to detect whether tactile discrimination tasks affect the excitability of the alpha motoneurons. Methods: Seven volunteers aged between 20 and 26 years participated in this study. The H reflex, (M wave) were recorded during three control and three experimental conditions. The control conditions preceded each experimental condition. By stimulating the tibialis nerve in the popliteal fossa the H reflex was elicited and its amplitude and latency measured at rest (control) and during tactile discrimination tasks (experimental). As tactile discrimination tasks, three separate tasks were chosen-tactile stimulation, escape reaction to tactile stimulation, and two-point discrimination. We used an EMG stimulator with a constant voltage output and monophasic squared pulses, with a 0,5 ms interval. The stimulation was switched on manually every 3-5 seconds. To detect the electrical potential of the soleus muscle, we used a surface EMG device, a GrassTelefactor, with galvanic isolation complying with EU standards. The parameters measured were the latency and amplitude of the H reflex and M wave during the tactile discrimination tasks and these were then compared to the values at rest. The...

Title: Recruitment curve of H-reflex in diagnostics of non-radicular syndroms Objectives: The main objective of this work is to verify the conductivity of nerve structures examination recruitment curves H-reflex and M-wave in the EMG examination in probands with non-radicular syndrome L5/S1. Methods: We tested 12 probands clinical trial diagnosed with non-radicular syndrome L5/S1. The test sample was compared with an equally large group of control probands. H-reflex of m.soleus was examined by bipolar stimulation in the fossa poplitea of tibial nerve. The results of an electromyographic examination was evaluated to asymptomatic and symptomatic side. Amplitude of H-reflex and M-wave, slope of recruitment curve, peaks of recruitment curves for the H-reflex and M-wave and the ratio Hmax / Mmax were evaluated and statistically compared. Results: Results of non-radicular syndrome L5/S1showed no significant change in the H-reflex. Due to this result we can suggests that there is no damage in nerve fibres in patients with non-radicular syndrome. Keywords: non-radicular syndrome, H-reflex, M-wave, recruitment curve

Master of Science / Department of Kinesiology / Brett J. Wong / Beetroot juice (BRJ) has been shown to increase NO-dependent dilation through both NOS-dependent and NOS-independent pathways. We hypothesized BRJ supplementation would augment reflex cutaneous active vasodilation. Subjects were equipped with two microdialysis fibers on the forearm and randomly assigned as control (Ringer’s) or NOS inhibition (20mM L-NAME). Whole-body heating was achieved via water-perfused suits to raise core temperature (Tc; ingestible telemetric pill) 0.8°C. Maximal cutaneous vasodilation was reached by administering 54mM SNP and local heating to 43°C. Skin blood flow was measured via laser-Doppler flowmetry and mean arterial pressure determined; cutaneous vascular conductance (CVC) was calculated and expressed as %CVCmax. Subjects underwent heat stress pre- and post-nitrate supplementation (3 days of BRJ: 5mM, 0.45g nitrates per day). BRJ increased the plateau CVC at control (pre: 57 ± 3 vs. post: 80 ± 5 %CVCmax) and L-NAME (pre: 36 ± 3 vs. post: 52 ± 6 %CVCmax; p<0.05 for all conditions) sites. The %NO contribution increased from pre- to post-BRJ (pre: 44 ± 5 %CVCmax vs. post: 64 ± 6 %CVCmax; p<0.05). These data suggest that BRJ augments the NOS-dependent and NOS-independent component of reflex cutaneous vasodilation.

A identificação pessoal através da análise da textura da íris é um método de identificação biométrico de grande eficiência. Algoritmos e técnicas foram desenvolvidos levando-se em consideração as características de textura da imagem da íris do olho humano. No entanto, essas características por serem estáticas são também susceptíveis a fraudes, ou seja, uma foto pode substituir a íris em análise. Por isso, este trabalho propõe um método para extrair as características de textura da íris durante a contração e dilatação da pupila, além das próprias características dinâmicas de contração e dilatação. Para isso foi desenvolvido um novo sistema de aquisição da imagem utilizando iluminação NIR (Near Infra-Red) e levando-se em conta o reflexo consensual dos olhos. As características são medidas de acordo com um padrão dinâmico de iluminação controlado pelo programa. Com isso, é possível aumentar a segurança de dispositivos de reconhecimento biométrico de pessoas através da íris, pois, somente íris vivas podem ser utilizadas. Os resultados mostram um índice de precisão significativo na capacidade de discriminação destas características. / The personal identification by iris texture analysis is a highly effective biometric identification method. Some algorithms and techniques were developed, taking into consideration the texture features of the iris image in the human eye. Nonetheless, such features, due to the fact that they are static, are also susceptible to fraud. That is, a picture can replace the iris in an analysis. For that reason, this work proposes a method for extracting texture features of the iris during the pupil contraction and dilation, in addition to the dynamic contraction and dilation features themselves. Therefore, it was developed a new image acquisition system through NIR (Near Infra-Red) illumination, considering the consensual reflex of the eyes. Features are measured according to a dynamic illumination standard controlled by the software and are afterwards selected by means of data mining. Then it is possible to increase the safety in the biometric recognition devices of people through their iris, since only living irises can be utilized. Results show a significant precision index in determining such features.

Introdução: a epilepsia reflexa é uma condição na qual todas as crises são desencadeadas por um estímulo específico e, na grande maioria dos casos, apresenta-se com crises refratárias ao tratamento. São vários os fatores desencadeantes, entre os quais se destaca pela raridade a evacuação. Objetivos: realizar revisão de literatura sobre epilepsia reflexa, identificar a evacuação como possível fator desencadeador de crise epiléptica e relatar o caso de um paciente com crise reflexa evacuatória documentada à monitorização por vídeo-eletroencefalograma Métodos: revisão de literatura acerca de epilepsias reflexas e revisão de prontuário de um paciente com suspeita clínica de epilepsia reflexa evacuatória. Resultados: o paciente deste estudo, um menino de 10 anos de idade, com dominância manual esquerda, iniciou, aos 4 anos, crises associadas à evacuação. Na monitorização por vídeo-eletroencefalograma, durante episódio de evacuação, apresentou parada comportamental, desvio cefálico para a direita, automatismos em membro superior esquerdo e arresponsividade, coçando o nariz tardiamente com a mão esquerda. O EEG ictal demonstrou atividade rítmica teta em região temporal esquerda com posterior envolvimento frontal esquerdo e de áreas homólogas contralaterais. As ressonâncias magnéticas de encéfalo não evidenciaram alterações e o SPECT interictal identificou hipoperfusão discreta na porção anterior do lobo temporal esquerdo. Com uso de ácido valpróico e carbamazepina o paciente segue livre de crises. Avaliações neuropsicológicas e de qualidade de vida sugerem comprometimento global, tanto antes como após o controle da epilepsia. Conclusão: este é apenas o terceiro caso de epilepsia reflexa evacuatória descrito na literatura, e o segundo com crises dessa ordem documentadas por vídeo-eletroencefalograma. Ambos sugeriram lateralização e localização em região temporal esquerda, elegendo esta região como potencial zona epileptogênica. O tratamento com ácido valpróico e carbamazepina mostrou-se eficaz para controle de crises neste paciente, podendo ser uma opção de tratamento em outros pacientes com este tipo de epilepsia. / Background: Reflex epilepsy is a condition in which all seizures are triggered by a specific stimulus. There are many known stimulus, including defecation which has rarely been reported. In the majority of cases, it presents with refractory seizures. Objective: review the literature on reflex epilepsy, as well as identify defecation as a possible trigger and report a case of a patient with reflex seizures triggered by defecation documented by video-electroencephalogram monitoring. Methods: literature review on reflex epilepsies and review of medical records of a patient with reflex epilepsy triggered by defecation. Results: we present a 10-year-old-boy patient, left-handed, whose epilepsy onset was at the age of four. Its seizures were characterized by episodes of loss of consciousness and atonia during defecation. Video-electroencephalogram monitoring had shown a seizure triggered by defecation, characterized by right head deviation, left upper limb automatisms, associated with consciousness impairment and afterwards nose wiping with the left hand. The ictal EEG demonstrated theta rhythmic activity in the left temporal lobe. The brain magnetic resonance was normal. The interictal SPECT identified left anterior temporal lobe mild hypoperfusion. The patient became seizure free after the treatment with valproic acid and carbamazepine. Neuropsychological and quality of life assessments suggested global impairment, before and after seizure control. Conclusion: this is the third case of epilepsy induced by defecation, and the second with seizures documented by videoelectroencephalogram. Similar to this case, both had suggested lateralization and localization over the left temporal region, suggesting this region as a potential epileptogenic zone in patients with this type of reflex epilepsy. In our patient, the treatment with valproic acid and carbamazepine was effective for the seizure control and may be an option to other patients with this condition.

Uma vibração aplicada a um tendão muscular aumenta a freqüência de disparos de aferentes, como os de fusos neuromusculares Ia e II, cujas terminações afetam circuitos da medula espinhal e com isto podem influenciar o controle motor. O objetivo deste estudo foi analisar o efeito de vibrações a duas freqüências (15 e 80Hz) e amplitudes de 1 e 2,5mm aplicadas ao tendão calcâneo direito sobre o sistema de controle postural e sobre a circuitaria neural associada a reflexos monosinápticos da perna. A hipótese era de que a vibração de alta freqüência ativasse preferencialmente os aferentes de fuso neuromuscular de tipo Ia enquanto a vibração a 15 Hz ativasse preferencialmente os aferentes de tipo II. Isto significaria que a vibração a 80 Hz teria forte efeito sobre o reflexo H, enquanto a vibração a 15 Hz teria um efeito significativo sobre a postura. Participaram deste estudo 14 sujeitos sãos. Na postura ereta quieta, foi realizada a aquisição do reflexo H enquanto o tendão calcâneo era vibrado. Após um intervalo de descanso, foi realizada a aquisição do Centro de Pressão (COP) tanto na direção Ântero-Posterior (AP) quanto na Médio-Lateral (ML) em paralelo à aquisição bilateral do EMG dos músculos (SO, TA, GL e GM) nas três condições (antes, durante e após a vibração do tendão calcâneo). Para os estímulos de 1 e 2,5mm realizados a 80 Hz as diferenças foram significativas em relação a todas as variáveis quando comparadas nas três condições, com exceção apenas do DP do TA e GM e, do valor médio do COP ML a 1mm. Em relação à freqüência de 15 Hz, notou-se que não houve diferenças significativas tanto no COP AP e ML quanto no DP do EMG dos músculos da perna esquerda entre as três condições. Quanto aos dados referentes ao DP dos músculos analisados na perna direita, os resultados mostraram que não houve efeitos significativos tanto ao utilizar 15Hz como 80Hz em todas as três condições. Em geral, estes dados mostraram que durante um estímulo vibratório mais forte o COP deslocouse mais para a direção posterior e lateral esquerda do sujeito. E, após interromper o estímulo, em alguns casos o COP ainda mostrava uma alteração prolongada. Em relação à amplitude média do reflexo H, para as amplitudes de vibração de 1 e 2,5 mm a 15 e 80 Hz, as análises apontaram que durante a vibração houve uma forte redução na amplitude do reflexo, sendo que em alguns casos ainda permaneceram reduzidas na condição pós-vibratória. Os resultados mostram que a vibração aplicada ao tendão calcâneo pode ser um forte estímulo à medula e capaz de alterar o controle postural, dependendo de suas características, uma vez que, com parâmetros apropriados, induziu alterações imediatas nos resultados do reflexo H, do COP e do EMG (p.e.). Porém, as alterações a vibrações aplicadas de modo a ativar seletivamente as fibras aferentes do grupo Ia e II mostraram efeitos diferenciais. Vibrações a 80Hz de frequência e a 1 e 2,5mm foram as que mais causaram alterações. A significativa ação sobre o reflexo H é compatível com o aumento da frequência de disparos dos aferentes Ia. Entretanto a forte ação sobre o COP dessas vibrações a 80 Hz sugere que os aferentes Ia podem ter uma importância maior do que a literatura recente tem preconizado, pelo menos para correções a perturbações posturais, uma vez que pode-se supor que a 80 Hz e 1 mm de amplitude os aferentes tipo II são pouco ativados. Por outro lado, a vibração a 15 Hz teve um efeito signficativo sobre o reflexo H mas sem afetar o COP, o que sugere que esta frequência consegue ativar a via Ia, causando depressão homossináptica e/ou inibição pré-sináptica dos aferentes Ia, mas sem chegar a influir no COP de forma significativa. Os resultados são interessantes do ponto de vista de aplicações em potencial para áreas como fisioterapia e reabilitação de pessoas com alterações posturais na clínica. Adicionalmente, abrem novas questões quanto às interpretações fisiológicas de vibrações a diferentes freqüências sobre o tendão calcâneo. / A vibration applied to a muscle tendon increases the firing frequency of afferents of types Ia and II innervating muscle spindles, and hence affects the spinal cord circuits and this can affect motor control. The aim of this study was to analyze the effect of vibrations of two frequencies (15 and 80Hz) and two amplitudes (1 and 2.5 mm) applied to the right Achilles tendon on the standing posture and on the H reflex. The hypothesis was that the high frequency vibration activates preferentially the Ia axons while the 15 Hz vibration activates preferentially the type II axons and hence the 80 Hz vibration would have a strong effect on the H reflex and the 15 Hz vibration would have a strong effect on posture. Fourteen subjects participated in this study. Their H reflex was acquired in the upright position while their Achilles tendon was vibrated. After an interval of rest, the center of pressure (COP) signal was acquired for both the antero-posterior (AP) and the medio-lateral (ML) directions in parallel with the acquisition of bilateral electromyograms (EMG) (SO, TA, and GL GM) in the three conditions (before, during and after the vibration of the Achilles tendon). For 1 and 2.5 mm vibrations at 80 Hz the differences were significant for all variables compared in the three conditions, except for the standard deviation (SD) of the TA and GM EMGs and the average value of COP ML for 1mm vibration. For the 15 Hz vibration, there were no significant differences in both the AP and ML COP and SD of the EMG of the left leg in the three conditions. The results for the EMG SD of the right leg showed no significant effects when using both 15Hz and 80Hz in all three conditions. These data showed that during a stronger vibratory stimulus the COP shifted more to the posterior direction and the left side of the subject. And, after stopping the stimulus, in some cases, the COP had not returned to the initial position. In relation to the mean H reflex amplitude for 1 and 2.5 mm vibrations at 15 and 80 Hz, the analysis showed that during vibration there was a stronger reduction in the amplitude of the H reflex, and in some cases the amplitude remained reduced in the post-vibratory period. The results showed that the vibration applied to the Achilles tendon can be a powerful stimulus to the spinal cord and capable of altering the postural control. The effects depended on the vibration features, since, with appropriate parameters, it led to immediate changes in the results of the H reflex, the COP and left leg EMG. However, 80 Hz vibration (1 and 2.5 mm) was the one that caused the largest changes both on COP and H reflex amplitude. The significant action on the H reflex is consistent with the increased frequency of firing of Ia afferent. However the strong action on the COP of vibrations at 80 Hz suggests that the Ia afferents may have a greater importance than what the recent literature has suggested, at least for postural corrections to disturbances, since it can be assumed that the type II afferents are little activated at 80 Hz and 1 mm amplitude. Furthermore, vibration at 15 Hz had a significant effect on the H reflex without affecting the COP, suggesting that vibrations at this frequency can activate Ia afferents, causing homosynaptic depression and / or presynaptic inhibition of Ia afferents, but without influencing the COP significantly. The results are interesting from the standpoint of potential applications to areas such as physical therapy and rehabilitation of patients in the clinic. Additionally, they raise new questions about the physiological mechanisms behind vibratory stimuli applied at different frequencies on the Achilles tendon.

Introduction : La toux est un symptôme fréquent dans l’asthme, en particulier à l’effort mais peu des choses sont connus quant aux mécanismes impliqués. L’objectif de cette étude a été d’établir le rôle de l’exercice dans la modulation du réflexe de toux (RT) sur un modèle de lapin anesthésié en ventilation spontanée, présentant une inflammation éosinophilique des voies aériennes. Méthode : Nous avons étudié 10 lapins sensibilisés à l’ovalbumine (OVA) et 8 lapins contrôles. La réponse ventilatoire à la stimulation mécanique trachéale (ST) a été analysée pour chaque lapin en conditions de repos et à l’exercice pour quantifier l’incidence et la sensibilité de la toux. Le lavage bronchioloalaveolaire (LBA) et le comptage cellulaire a été réalisé pour vérifier la présence d’une inflammation à éosinophiles chez les lapins sensibilisés à l’OVA. Pour reproduire l’exercice, des contractions musculaires au niveau des pattes arrière ont été induites par stimulation électrique (CME). Résultats : Au total, 494 ST ont été réalisées, 261 en repos et 233 à l’exercice. Le taux d’éosinophiles dans le LBA a été retrouvé significativement plus élevé chez les lapins sensibilisés à l’OVA (vs contrôles, p=0.008). La CME a permis une augmentation similaire de l’ordre de 35% de la ventilation minute chez les lapins sensibilisés à l’OVA et chez les lapins contrôles par rapport au repos. La sensibilité du RT a été retrouvée significativement diminuée à l’exercice par rapport au repos pour les lapins contrôles (p=0.0313) contrairement aux lapins sensibilisés à l’OVA pour lesquels elle reste inchangée. Conclusion : Le phénomène de “down-regulation” du RT à l’exercice décrit chez les lapins contrôles n’a pas été observé chez les lapins sensibilisés à l’OVA. D’autres études sont nécessaires afin d’établir le rôle spécifique de l’inflammation bronchique sur la disparition du phénomène de “down-regulation” de la toux à l’exercice chez les patients asthmatiques / Introduction: Cough is a major symptom of asthma frequently experienced during exercise but little is known about interactions between cough and exercise. The goal of our study was to clarify the potential modulation of the cough reflex (CR) by exercise in a spontaneously breathing anaesthetized animal model of airway eosinophilic inflammation. Materials & methods: Ten ovalbumin (OVA) sensitized rabbits and 8 controls were studied. The ventilatory response to direct (TS) performed both at rest and during exercise was determined to quantify the incidence and the sensitivity of the CR. Broncho-alveolar lavages (BAL) and cell counts were performed to assess the level of the airway inflammation following OVA-induced sensitization. Exercise was mimicked by electrically induced hind limb muscular contractions (EMC). Results: Among 494 TS were performed, 261 at rest and 233 at exercise. The OVA sensitized rabbits have a higher level of eosinophil (p=0.008) in BAL. EMC increased minute ventilation by 36% in OVA rabbits vs 35% in control rabbits, compared to rest values. The sensitivity of the CR decreased during exercise compared to baseline in control rabbits (p=0.0313) while it remained unchanged in OVA rabbits. Conclusion: The down-regulation of the CR during exercise in control rabbits was abolished in OVA rabbits. The precise role of airway inflammation in this lack of CR downregulation needs to be further investigated but it might contribute to the exercise-induced cough in asthmatics

Made available in DSpace on 2016-04-26T20:48:36Z (GMT). No. of bitstreams: 1 Juliana Aragao Galdeano.pdf: 1067914 bytes, checksum: 307265faf2b97fcf16acd6a71bdde391 (MD5) Previous issue date: 2012-05-14 / This research deals with the stability in employment and its implications in labor relationships. Addresses the referred right under a modern and critical perspective, understanding the classical aspect of the stability, an overpasted legal institution unable to compatibilize with the economic and financial issues that currently permeate labor relationships. From this finding, the research seeks an alternative to compatibilize the worker's right to a work relationship that is dignified, stable, with the necessity of a productive business. For this purpose, the concept of objective good-faith is utilized. Invokes International and Foreign Rights in search of inspirational elements to the solution of the central issue. Finally, hosts the duty of motivation dismissal as the most appropriate means to the effectiveness of stability, since it can suppress the arbitrary dismissal, without preventing the occurrence of substantiated dismissals / Este trabalho trata da estabilidade no emprego e suas implicações nas relações laborais. Aborda o referido direito sob uma ótica moderna e crítica, entendendo a vertente clássica da estabilidade um instituto jurídico ultrapassado e incapaz de se compatibilizar com as questões econômico-financeiras que atualmente permeiam as relações de trabalho. A partir dessa constatação, o trabalho busca alternativa para compatibilizar o direito do trabalhador a uma relação de trabalho digna, estável, com a necessidade produtiva da empresa. Para tanto, utiliza-se do conceito de boa-fé objetiva. Invoca os Direitos Internacional e Estrangeiro em busca de elementos inspiradores à solução da questão central. Por fim, acolhe o dever de motivação da despedida como meio mais adequado à efetivação da estabilidade, posto que capaz de reprimir a despedida arbitrária, mas sem impedir a ocorrência das despedidas fundamentadas

Submitted by PPG Educa??o em Ci?ncias e Matem?tica (educem-pg@pucrs.br) on 2018-06-20T16:30:56Z No. of bitstreams: 1 Anelise Volkweiss_Vers?o homologada 200618.pdf: 2270379 bytes, checksum: ae4a1cef3417138d7000691e12a9bcd9 (MD5) / Approved for entry into archive by Sheila Dias (sheila.dias@pucrs.br) on 2018-06-28T12:46:37Z (GMT) No. of bitstreams: 1 Anelise Volkweiss_Vers?o homologada 200618.pdf: 2270379 bytes, checksum: ae4a1cef3417138d7000691e12a9bcd9 (MD5) / Made available in DSpace on 2018-06-28T12:58:23Z (GMT). No. of bitstreams: 1 Anelise Volkweiss_Vers?o homologada 200618.pdf: 2270379 bytes, checksum: ae4a1cef3417138d7000691e12a9bcd9 (MD5) Previous issue date: 2018-03-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / This dissertation is the result of a research developed in the Graduate Program in Education in Science and Mathematics, at the Pontifical Catholic University of Rio Grande do Sul, whose theme concerns the possibilities, challenges, and knowledge for the construction and implementation of integrated curriculum in the Professional Technical Education (Educa??o Profissional T?cnica - EPT) of Secondary School in the integrated format. A Campus of a Federal Institute, located in the southern region of Brazil, was selected as a place of investigation, since, in addition to the singularities of the EPT modality of Secondary Education, the specificities of the school in which it is proposed to develop integrated curriculum should be considered. Aiming to identify how the perceptions of the professionals in education and of the students of two Integrated Technical Courses at the school contribute to the construction of an integrated curriculum, methodological procedures were adopted in order to allow the expression of the 138 participants, such as questionnaires and dynamics through Focal Groups (BARBOUR, 2009). The leading question of the research sought to identify which elements can be considered significant in educational processes accomplished and/or envisioned from an integrated curriculum perspective. After submitting the collected data to the Discursive Textual Analysis (MORAES; GALIAZZI, 2011), six emerging categories were identified, which, through their units of meaning, provided some possible answers to the research problem. The most significant elements were highlighted and interpreted from the statements that are related to the construction of an integrated curriculum in the place investigated, such as: (I) the development of the feeling of belonging and of recognition of the institution; (II) the understanding of the mission and values of a Federal Institute; (III) the development of pedagogical processes that include interdisciplinary activities and projects of teaching, research, and extension; (IV) the political, economic and social context and its influence on the construction of an integrated curriculum; (V) the relationship between public educational policies, the permanence of students on the campus, and the career plan for teachers; and (VI) the qualification and reflective practice of the professionals are important to promote higher quality in what is developed in the school. A democratic project of Education should also consider the identity of the school community and, for this reason, this research also sought to outline the profile of the group through questionnaires. The reading of the theoretical reference about EPT, such as Frigotto (2012; 2015), Saviani (2003; 2007; 2009), Ramos (2012; 2010; 2017), Machado (2008; 2010), and Moura (2008; 2010), shows that it is necessary to understand the historical relationship among work-education-productive systems and the work as an educational principle ? linked to the inseparability among science, technology, and culture ? to build an Integrated Curriculum, especially in schools which offer Integrated Technical Courses to Secondary School. / Esta disserta??o ? resultado de uma pesquisa desenvolvida no programa de P?s-Gradua??o em Educa??o em Ci?ncias e Matem?tica pela Pontif?cia Universidade Cat?lica do Rio Grande do Sul cujo tema diz respeito ?s possibilidades, desafios e saberes para a constru??o e efetiva??o de um curr?culo integrado na Educa??o Profissional T?cnica (EPT) de N?vel M?dio no formato integrado. Foi selecionado um Campus de um Instituto Federal, localizado na regi?o sul do Brasil, como lugar de investiga??o, uma vez que al?m das singularidades da modalidade EPT de N?vel M?dio, devem se considerar as especificidades da escola em que se prop?e desenvolver um curr?culo integrado. Tendo como objetivo identificar de que forma as percep??es dos profissionais da educa??o e dos estudantes de dois Cursos T?cnicos Integrados ao Ensino M?dio da escola contribuem para a constru??o de um curr?culo integrado, foram adotados procedimentos metodol?gicos que possibilitaram a express?o dos 138 participantes, tais como question?rios e din?micas por meio de grupos focais (BARBOUR, 2009). A pergunta-problema orientadora da pesquisa buscou identificar quais elementos podem ser considerados significativos em processos educacionais realizados e/ou vislumbrados em uma perspectiva de curr?culo integrado. Ap?s submeter os dados coletados ? An?lise Textual Discursiva (MORAES; GALIAZZI, 2011), foram identificadas seis categorias emergentes, as quais, por meio de suas unidades de sentido, forneceram algumas poss?veis respostas ao problema da investiga??o. Os elementos considerados mais significativos foram destacados e interpretados a partir dos depoimentos que est?o relacionados ? constru??o de um curr?culo integrado no local investigado, como: (I) o desenvolvimento do sentimento de pertencimento e de reconhecimento ? institui??o; (II) o entendimento da miss?o e dos valores de um Instituto Federal; (III) o desenvolvimento de processos pedag?gicos que incluam atividades interdisciplinares e projetos de ensino, pesquisa e extens?o; (IV) o cen?rio pol?tico-econ?mico-social e sua influ?ncia na constru??o de um curr?culo integrado; (V) a rela??o entre pol?ticas p?blicas educacionais, a perman?ncia de estudantes no campus e o plano de carreira dos docentes e; (VI) a qualifica??o e a pr?tica reflexiva dos profissionais s?o importantes para promover maior qualidade ao que ? desenvolvido na escola. Um projeto democr?tico de Educa??o tamb?m deve considerar a identidade da sua comunidade escolar e, por tal raz?o, esta pesquisa tamb?m buscou tra?ar o perfil do grupo por meio de question?rios. A leitura do referencial te?rico acerca da EPT, tais como em Frigotto (2012; 2015), Saviani (2003; 2007; 2009), Ramos (2012; 2010; 2017), Machado (2008; 2010) e Moura (2008; 2010), evidencia que ? preciso compreender a hist?rica rela??o entre trabalho-educa??o-sistemas produtivos e o trabalho como princ?pio educativo ? vinculado ? indissociabilidade entre ci?ncia, tecnologia, cultura ? para se construir um curr?culo integrado, principalmente em escolas que oferecem Cursos T?cnicos Integrados ao Ensino M?dio.