Knowledge, attitudes, and practices affecting health behaviors in the U.S. Army Special Operations Command population of Rangers

Malaria is a threat to United States military personnel operating in endemic areas, from which there have been hundreds of cases reported over the past decade. Each of these cases might have been avoided with proper adherence to malaria chemoprophylaxis medications. Military operations may detract from the strict 100% adherence required of these preventive medications. However, the reasons for non-adherence in military populations are not well understood. This behavior was investigated using a cross sectional study design on a convenience sample of U.S. Army Ranger volunteers (n=150) located at three military instillations. Theoretical support was based on components of the Health Belief Model, the Theory of Reasoned Action/Theory of Planned Behavior, and the Social Cognitive Theory. ^ Data on knowledge, attitudes, and practices, as well as multiple environmental domains was collected using an original yet unvalidated questionnaire. The data was analyzed using bivariate Pearson correlations, binary logistic regression, and moderated logistic regressions employing a 0.05 criterion of statistical significance. Power analyses predicted 96-98% power for this analysis. ^ Multiple significant medium strength Pearson correlation coefficients were identified relative to the two dependent variables Take medications as directed and Intend to take the medications as directed the next time. Binary logistic regression analyses identified multiple variables that may predict behavioral intentions to adhere to these preventive medications, as a proxy for behavioral change. Moderated logistic regression analyses identified Command Support for adherence to these medications as a potential significant moderator that interacts with independent variables within three domains of the survey questionnaire. ^ The findings indicate that there may be potential significant beneficial effects, which may improve this behavior in this population of Rangers through 1) promoting affirmative interpersonal communications that emphasize adherence to these medications, 2) including malaria chemoprophylaxis medications in the mission planning process, and 3) military command support, in the form of including the importance of proper adherence to these medications in the unit safety briefings.^

Dimensions of gender relations and reproductive health inequity perceived by female undergraduate students in the Mekong Delta of Vietnam: a qualitative exploration

Introduction Increasing evidence indicates that gender equity has a significant influence on women’s health; yet few culturally specific indicators of gender relations exist which are applicable to health. This study explores dimensions of gender relations perceived by female undergraduate students in southern Vietnamese culture, and qualitatively examines how this perceived gender inequity may influence females’ sexual or reproductive health. Methods Sixty-two female undergraduate students from two universities participated in eight focus group discussions to talk about their perspectives regarding national and local gender equity issues. Results Although overall gender gaps in the Mekong Delta were perceived to have decreased in comparison to previous times, several specific dimensions of gender relations were emergent in students’ discussions. Perceived dimensions of gender relations were comparable to theoretical structures of the Theory of Gender and Power, and to findings from several reports describing the actual inferiority of women. Allocation of housework and social paid work represented salient dimensions of labor. The most salient dimension of power related to women in positions of authority. Salient dimensions of cathexis related to son preference, women’s vulnerability to blame or criticism, and double standards or expectations. Findings also suggested that gender inequity potentially influenced women’s sexual and reproductive health as regards to health information seeking, gynecological care access, contraceptive use responsibility, and child bearing. Conclusion Further investigations of the associations between gender relations and different women’s sexual and reproductive health outcomes in this region are needed. It may be important to address gender relations as a distal determinant in health interventions in order to promote gender-based equity in sexual and reproductive health.

Re -"interpreting" the conquest: European and Amerindian translators and go -betweens in the colonization of the Americas, 1492--1675

This dissertation aims to recover the lives and careers of those Amerindians and Europeans who voluntarily or involuntarily took on the role of intercultural interpreters in the contact, conquest, and early colonial period in the Americas between 1492 and 1675. It intends to prove that these so-called “marginal” figures assumed roles that went far beyond those of linguistic and cultural translators, and often had a decisive impact on early Indian-colonial relations. ^ In the course of my research, I consulted hundreds of published sixteenth- and seventeenth-century chronicles, narratives, and memoirs in my search for references to interpreters. I augmented these accounts with information derived from unpublished archival documents, drawn primarily from the Archivo General de Indias, in Seville, Spain. ^ I organized my findings in theme-driven chapters that begin with a consideration of the historiography of that subject. Each chapter is further subdivided into chronologically-arranged historical vignettes that focus on the interpreters who mediated between the Spanish, Portuguese, French, English and Dutch and the various Native American polities and cultures. ^ I found that colonial authorities and Amerindian communities alike recognized the absolute necessity of recruiting competent and loyal interpreters and go-betweens, and that both sides tried to secure their loyal service by means both fair and foul. Although pressured, pushed, and pulled in contrary directions, most interpreters recognized the pivotal position they held in cross-cultural negotiations and rarely remained passive pawns in the contests between the forces of domination and defense. ^ All across the Americas, interpreters used their linguistic and diplomatic skills, and their intimate knowledge of the “other” not simply to facilitate conquest or spearhead the opposition, but to transform themselves from “culture brokers” into “power brokers.” Many of the decisive events that shaped colonial-Indian relations turned on the actions of these culturally-ambiguous individuals, a fact bemoaned and begrudgingly acknowledged by most of the contemporary conquistadors, chroniclers, and colonial founders, and recognized by this author. ^

Conceptualizing American power and security in a post -9/11 security context: Conflict, resistance, and global security, 2001–present

In a post-Cold War, post-9/11 world, the advent of US global supremacy resulted in the installation, perpetuation, and dissemination of an Absolutist Security Agenda (hereinafter, ASA). The US ASA explicitly and aggressively articulates and equates US national security interests with the security of all states in the international system, and replaced the bipolar, Cold War framework that defined international affairs from 1945-1992. Since the collapse of the USSR and the 11 September 2001 terrorist attacks, the US has unilaterally defined, implemented, and managed systemic security policy. The US ASA is indicative of a systemic category of knowledge (security) anchored in variegated conceptual and material components, such as morality, philosophy, and political rubrics. The US ASA is based on a logic that involves the following security components: (1) hyper militarization, (2) intimidation,(3) coercion, (4) criminalization, (5) panoptic surveillance, (6) plenary security measures, and (7) unabashed US interference in the domestic affairs of select states. Such interference has produced destabilizing tensions and conflicts that have, in turn, produced resistance, revolutions, proliferation, cults of personality, and militarization. This is the case because the US ASA rests on the notion that the international system of states is an extension, instrument of US power, rather than a system and/or society of states comprised of functionally sovereign entities. To analyze the US ASA, this study utilizes: (1) official government statements, legal doctrines, treaties, and policies pertaining to US foreign policy; (2) militarization rationales, budgets, and expenditures; and (3) case studies of rogue states. The data used in this study are drawn from information that is publicly available (academic journals, think-tank publications, government publications, and information provided by international organizations). The data supports the contention that global security is effectuated via a discrete set of hegemonic/imperialistic US values and interests, finding empirical expression in legal acts (USA Patriot ACT 2001) and the concept of rogue states. Rogue states, therefore, provide test cases to clarify the breadth, depth, and consequentialness of the US ASA in world affairs vis-à-vis the relationship between US security and global security.

Political strategy, leadership, and policy entrepreneurship in Japanese defense policy and politics: A comparison of three prime ministerships

Since the end of the Cold War, Japan's defense policy and politics has gone through significant changes. Throughout the post cold war period, US-Japan alliance managers, politicians with differing visions and preferences, scholars, think tanks, and the actions of foreign governments have all played significant roles in influencing these changes. Along with these actors, the Japanese prime minister has played an important, if sometimes subtle, role in the realm of defense policy and politics. Japanese prime ministers, though significantly weaker than many heads of state, nevertheless play an important role in policy by empowering different actors (bureaucratic actors, independent commissions, or civil actors), through personal diplomacy, through agenda-setting, and through symbolic acts of state. The power of the prime minister to influence policy processes, however, has frequently varied by prime minister. My dissertation investigates how different political strategies and entrepreneurial insights by the prime minister have influenced defense policy and politics since the end of the Cold War. In addition, it seeks to explain how the quality of political strategy and entrepreneurial insight employed by different prime ministers was important in the success of different approaches to defense. My dissertation employs a comparative case study approach to examine how different prime ministerial strategies have mattered in the realm of Japanese defense policy and politics. Three prime ministers have been chosen: Prime Minister Hashimoto Ryutaro (1996-1998); Prime Minister Koizumi Junichiro (2001-2006); and Prime Minister Hatoyama Yukio (2009-2010). These prime ministers have been chosen to provide maximum contrast on issues of policy preference, cabinet management, choice of partners, and overall strategy. As my dissertation finds, the quality of political strategy has been an important aspect of Japan's defense transformation. Successful strategies have frequently used the knowledge and accumulated personal networks of bureaucrats, supplemented bureaucratic initiatives with top-down personal diplomacy, and used a revitalized US-Japan strategic relationship as a political resource for a stronger prime ministership. Though alternative approaches, such as those that have looked to displace the influence of bureaucrats and the US in defense policy, have been less successful, this dissertation also finds theoretical evidence that alternatives may exist.

The Council on Foreign Relations and the Grand Area: Case Studies on the Origins of the IMF and the Vietnam War

This article examines the role of corporate elites within the Council on Foreign Relations (CFR) in establishing the framework for the IMF and the rationale for the Vietnam War. Drawing on the CFR's War-Peace Study Groups, established in World War II as a conduit between corporate elites and the U.S. government, the author first analyzes the role of corporate power networks in grand area planning. He shows that such planning provided a framework for postwar foreign and economic policymaking. He then documents the relationship between corporate grand area planning and the creation of the IMF. The analysis concludes with an examination of the relationship between grand area planning and the Vietnam War.

The Relationship between Classroom Interactions and Exclusionary Discipline as a Social Practice: A Critical Microethnography

Exclusionary school discipline results in students being removed from classrooms as a consequence of their disruptive behavior and may lead to subsequent suspension and/or expulsion. Literature documents that nondominant students, particularly Black males, are disproportionately impacted by exclusionary discipline, to the point that researchers from a variety of critical perspectives consider exclusionary school discipline an oppressive educational practice and condition. Little or no research examines specific teacher-student social interactions within classrooms that influence teachers’ decisions to use or not use exclusionary discipline. Therefore, this study set forth the central research question: In relation to classroom interactions in alternative education settings, what accounts for teachers’ use or non-use of exclusionary discipline with students? A critical social practice theory of learning served as the framework for exploring this question, and a critical microethnographic methodology informed the data collection and analysis. Criterion sampling was used to select four classrooms in the same alternative education school with two teachers who frequently and two who rarely used exclusionary discipline. Nine stages of data collection and reconstructive data analysis were conducted. Data collection involved video recorded classroom observations, digitally recorded interviews of teachers and students discussing selected video segments, and individual teacher interviews. Reconstructive data analysis procedures involved hermeneutic inferencing of possible underlying meanings, critical discourse analysis, interactive power analysis and role analysis, thematic analysis of the interactions in each classroom, and a final comparative analysis of the four classrooms. Four predominant themes of social interaction (resistance, conformism, accommodation, and negotiation) emerged with terminology adapted from Giroux’s (2001) theory of resistance in education and Third Space theory (Gutiérrez, 2008). Four types of power (normative, coercive, interactively established contracts, and charm), based on Carspecken’s (1996) typology, were found in the interactions between teacher and students in varying degrees for different purposes. This research contributes to the knowledge base on teacher-student classroom interactions, specifically in relation to exclusionary discipline. Understanding how the themes and varying power relations influence their decisions and actions may enable teachers to reduce use of exclusionary discipline and remain focused on positive teacher-student academic interactions.

Conceptualizing American power and security in a post-9/11 security context : conflict, resistance, and global security, 2001-present

In a post-Cold War, post-9/11 world, the advent of US global supremacy resulted in the installation, perpetuation, and dissemination of an Absolutist Security Agenda (hereinafter, ASA). The US ASA explicitly and aggressively articulates and equates US national security interests with the security of all states in the international system, and replaced the bipolar, Cold War framework that defined international affairs from 1945-1992. Since the collapse of the USSR and the 11 September 2001 terrorist attacks, the US has unilaterally defined, implemented, and managed systemic security policy. The US ASA is indicative of a systemic category of knowledge (security) anchored in variegated conceptual and material components, such as morality, philosophy, and political rubrics. The US ASA is based on a logic that involves the following security components: 1., hyper militarization, 2., intimidation, 3., coercion, 4., criminalization, 5., panoptic surveillance, 6., plenary security measures, and 7., unabashed US interference in the domestic affairs of select states. Such interference has produced destabilizing tensions and conflicts that have, in turn, produced resistance, revolutions, proliferation, cults of personality, and militarization. This is the case because the US ASA rests on the notion that the international system of states is an extension, instrument of US power, rather than a system and/or society of states comprised of functionally sovereign entities. To analyze the US ASA, this study utilizes: 1., official government statements, legal doctrines, treaties, and policies pertaining to US foreign policy; 2., militarization rationales, budgets, and expenditures; and 3., case studies of rogue states. The data used in this study are drawn from information that is publicly available (academic journals, think-tank publications, government publications, and information provided by international organizations). The data supports the contention that global security is effectuated via a discrete set of hegemonic/imperialistic US values and interests, finding empirical expression in legal acts (USA Patriot ACT 2001) and the concept of rogue states. Rogue states, therefore, provide test cases to clarify the breadth, depth, and consequentialness of the US ASA in world affairs vis-a-vis the relationship between US security and global security.

Condições de trabalho e terceiro setor: implicações contemporâneas para o serviço social

In the contemporaneity, due to the implementation of the neoliberal project in which one verifies the withdrawal of the State in regard to the development of social policies, it is observed a new way of responding to the multifaceted expressions of the social issue, which is the emergence and expansion of a supposed "third sector" in society. Thus, the productive restructuring process has led to the deterioration of labor relations, as well as a super exploration of human labor power, also triggering structural unemployment. By being delineated in classist interests, the emergence of the "third sector" brings contradictory aspects to the society, one of these being the very concept of "third sector", more ideological than real. By seeking to answer the expressions of the social issue, demands the intervention of social workers in the institutions that "composes it". This way, arises the interest in researching what are the current conditions and labor relations of the social workers who work in the institutions of the "third sector" in Mossoró-RN. Therefore, this study is constituted by a survey for the conclusion of a Master's degree in Social Service at the Universidade Federal do Rio Grande do Norte. Therefore, it was listed out as general objective to identify and analyze the conditions and labor relations of the social workers entered in the institutions of the "third sector" in Mossoró-RN. And by specific objectives: to map the institutions that are part of the "third sector" in the city of Mossoró, which have social workers on its professional staff, in order to profile the same; and, analyze the main challenges presented to the work of the social worker in these institutions. We used the bibliographic and documental research to enlighten the knowledge of the topic approached and the development of the field research, in which for the analysis of the data obtained, through field research, it was used the quantitative and qualitative approach. The search results confirmed that half of the institutions was identified as philanthropics, and most of them are funded by the federal government and that such organizations develop activities in several areas, particularly health and welfare. Concerning the conditions and labor relations, was highlighted the fact that half of the professionals insert themselves within the institutions by appointment; regarding the salary, 57.1% of employees receive between 3 and 4 minimum wages, which is considered relatively low. Was satisfactory the analysis related to the labor rights, because almost all offer a formal contract, which ensures, in great measure, the effectuation of such rights. Now with regard to the workload, 5 of 6 institutions implemented the Law Nº. 12.317/2010 ensuring 30 hours a week for social workers. However, it were cited many challenges relating the reality of the "third sector" to the conditions and labor relations, among them stands out: the delay of salary and non-salary adjustment; the realization of activities that do not relate to professionals, functions and duties; the development of many activities by a single professional. Two important data are the not incentive to a postgraduate and the charging of the fulfillment of the goals for the professional productivity. Here, it is worth to reflect that, although this study presents elements that provide to identify some aspects of labor relations and conditions of social workers in the "third sector" in Mossoró- RN, as well as some challenges that permeate this space of professional insertion, is meant that there is much to be unveiled, and other studies can later do so in an attempt to a better understanding of the complexity of processes that permeate the "third sector"

O envelhecimento no espaço midiático: a produção de sentidos pelos meios jornalísticos

Aging as a social phenomenon is guided in the ways of production and reproduction, that is linked to the peculiarities and compliances of the social structure influence the values and erected senses. The search for the understanding of the reality will be given by the appropriation of knowledge/information that in contemporary times are increasingly tied to the media means, so that they go beyond the mere condition media, reaching the condition of instruments of direct, attitudes and opinions production. Among the media instruments, there are news medias, that are important means of information dissemination and consequently production of senses, including over aging. Thus, the objective is to: apprehend the social representations and meanings associated with aging in the media space about aging; browse the social representations about aging in media space and their influence on the relations that are established in the cultural socio-economic context. To do it The Theory of Social Representation will be used. To collect the data, 57 online news from the three main state newspapers were studied: Tribuna do Norte, Gazeta do Povo and Jornal de Hoje, which were captured through a search tol of these newspaper sites, using the words: “aging””elderly”. These materials were analyzed making use of Bardin’s Qualitative Analysis, which allowed the establishment of five categories, namely: Aging and violence; Aging in contemporary times; Aging and health; Aging and citizenship; and Aging, work and action. In the first category news reporting violent situations are framed the regardless of the victim’s condition or the one charged by the violence, the fragility of elderly persists. In Aging in contemporary times the attempts of the news media to explain the demographic changes of the quantitative increases in the elderly, the burden it may lead to the full development of the country are noticed. In Aging and health is noticed the imminent end of the condition brought on age, as a synonym for diseases and conditions. In the fourth category, Aging and citizenship situations are shown where peculiarities and needs or the elderly need to turn into obligation to be fulfilled, denouncing the condition of low expression and social power of the class. Finally, in Aging, work and action situations that indicate the non-expectation of elderly interaction with new technologies and participation in decision-making directions of society are brought. In a general and specific form this analysis allowed learning the ways of production of meanings about aging in the papers, as these ones tend to represent aging through intentioned situations as hegemonic needs, building the social representation of the elderly as fragile person, submissive, inactive, subject to violence and susceptible to becoming ill.

Da educação infantil ao ensino fundamental: o que contam as crianças sobre essa travessia na cultura de escola

From inquiries concerning the child as an individual with rights, this work takes as its object of study the perception of 5-7 years old children on their journey from kindergarten to elementary school, in a school culture. The objective of the research is, therefore, to investigate what the children tell in narratives drawn into a conversation circle about their experiences of school life in kindergarten and the first grade of elementary school. The participants were 18 children from a public school in the city of Natal (RN). Five rounds of conversation were held in which the children told a little alien, who was unaware of the school culture, what they knew about school and what they did at it. The research is linked to the project "Children's Narratives. What the children tell about childhood schools?"(Passeggi et all, 2011) and adopts epistemological principles and research methods of (auto)biographical education, taking as a working hypothesis the child's ability to reflect on their experiences and understand from their point of view, what happens to them. Analyses were organized based on the concept of school culture (Barroso, 2012). In the narratives of children, the three dimensions of school culture: the functionalist (purpose and rules), structural (structure and pedagogical organization) and the interactional (relations with others, with the spaces and with knowledge) are considered intertwined in their school perceptions and signal experienced tensions in a process of "conversion" from child to student. Children seem to realize the uniqueness of each level of education. They recognize as a characteristic of early childhood education the recreational activities, and as injunctions of the first year of elementary school the "study", "learning to read and write" to "be smart" to "change." The schooling will thus, constitute, in their eyes, as a time and a place where the children's culture gives way to school culture, and in this journey they experience that the desire to play and the duty/want to study cross the three dimensions of school. At the end of the journey, the status of children as cultural beings with rights is confirmed, whose narratives about school and about their experiences of "conversion" in a student, reveal much about the power of reflection on themselves, the school and the society in which they live, legitimizing their place in educational research and in child care policies.

Corpos da Ciranda: narrativas poéticas, artístico/estética da ciranda de Lia de Itamaracá

This research is a study that deals with the language of the players bodies of Ciranda (a typical dance in circle in Brazil) – more specifically the one of Lia from Itamaracá. Our interest is to observe how this body dances, communicates, writes on time and space, establishing relations that complement and help to remain in construction. Thus, in a circular way and in an energy that is transmitted with the contact of the touch of the hands, in the power of song, in a circle that can be seen from many places, but by different angles, holding on that the particularities of its subjects players/dancers/observers, and that we propose ourselves to think: who are those players bodies and how do they build the circles of Ciranda? Therefore, during the pathway of the research, we were conducted by the phenomenological method and, from this, used the concepts of lived and sensible world. Our interest in this manifestation is, also, the body that dances and insert itself in the artistic expression, meaning and opening itself to the knowledge by the experience. Therefore, we assume a conception of the body that refers itself in the merleaupontyana fenomenologic approach, in this way, in its criativity in relation to the body as a fragmented being, as it is pointed by the Cartesiana theory. In this perspective, we understand the body in its relations with the culturals, sociais, economics and artistics issues that integrates it, in others words, in the relations that helped us to better understand the body as it is. This way, this research has as main objective to present the refletions about the players body, mainly, of Lia from Itamaracá and with this body to dance, to communicate, to write itself on time and space, estabilishing relations that complement and help to stay in construction. Such a statement leads us in this work, to inquire, for example: what mobilizes those subjects on this dance? We understand that elements as the place that is always in modification, the costumes, the musicality and the change in the movimentation of the players body in each new circle, those elements are factors that activate a permanente reconfiguration that are happening in the Ciranda dance nowadays. Finally, we assert that this investigation comes in reason to the big dimension that the Ciranda has achivied in Brazil, especially in the Northeast, as the existence of few references and registers of the reseach manifestation in the academic areas. It is possible to verify, in this research, that, in reason to this spreading, the nuances of the players bodies is even more diversified and that the missing of experiences on Itamaracá island - PE, its origin has putting away the original and community, becames, more and more, a dance of others stages and squares.

Capela de nossa Senhora da Piedade de Campo Formoso: a invenção de uma cidade à margem da modernidade, 1889-1930

This research objective is to analyze the historical aspects of the city ―Capela de Nossa Senhora da Piedade de Campo Formoso‖, located in the micro region Pires do Rio, southeast of Goiás in the period of the First Republic, 1989-1930. To understand a city is to try to understand the individuals who inhabit it, as they are the ones who are responsible for the structures that forms that space. Therefore this thesis brings to the historiography a study of the city of Capela de Nossa Senhora da Piedade de Campo Formoso through various mechanisms as oral sources, official documents of the municipality collected in public bodies of the city made available in town halls, municipal public and archive file of the prefecture. These sources have helped us to make the knowledge of the place approached. The Republic has brought to different places of Brazil expectations and/or solutions, of innovations that modernized in order to erase the marks the old colonial system. The cities to be created would be part of the molds republicans and this way, should follow models ready coming, basically, from European countries. However, the city of the Capela de Nossa Senhora da Piedade de Campo Formoso is outside of this process moderniser, having been relegated by several years to difficulties of a distant region and without resources. The historiography of Goiás summarizes the period of the arrival of the railroad in the southern region of the State, such as a time of progress in all the sectors of the life of this society. Then, to understand the specificity of Campo Formoso, we approached from the documentary sources exist various elements constitutor city history: its political constitution formed by the most affluent of the city, the strength of the colonels, the role of the Church as a political power. These power relations in the region were decisive for the deviation of the railroad. In this way, also we sought to analyze how the process of urbanization has occurred and which represented for the history of the city Capela de Nossa Senhora da Piedade de Campo Formoso the passage of the Railroad Goiás not within its limits. In the meantime we situate the special policies of a city in the interior of Goiás, which is on the edge of a project set up as amodernizer moved by the First Republic.

Étude des relations entre le développement professionnel des enseignants du postsecondaire et leur bien-être psychologique au travail

Réalisé en milieu collégial (cégep)

Investigating the encoding of visual stimuli by forming neural circuits in the cat primary visual cortex

Contexte La connectomique, ou la cartographie des connexions neuronales, est un champ de recherche des neurosciences évoluant rapidement, promettant des avancées majeures en ce qui concerne la compréhension du fonctionnement cérébral. La formation de circuits neuronaux en réponse à des stimuli environnementaux est une propriété émergente du cerveau. Cependant, la connaissance que nous avons de la nature précise de ces réseaux est encore limitée. Au niveau du cortex visuel, qui est l’aire cérébrale la plus étudiée, la manière dont les informations se transmettent de neurone en neurone est une question qui reste encore inexplorée. Cela nous invite à étudier l’émergence des microcircuits en réponse aux stimuli visuels. Autrement dit, comment l’interaction entre un stimulus et une assemblée cellulaire est-elle mise en place et modulée? Méthodes En réponse à la présentation de grilles sinusoïdales en mouvement, des ensembles neuronaux ont été enregistrés dans la couche II/III (aire 17) du cortex visuel primaire de chats anesthésiés, à l’aide de multi-électrodes en tungstène. Des corrélations croisées ont été effectuées entre l’activité de chacun des neurones enregistrés simultanément pour mettre en évidence les liens fonctionnels de quasi-synchronie (fenêtre de ± 5 ms sur les corrélogrammes croisés corrigés). Ces liens fonctionnels dévoilés indiquent des connexions synaptiques putatives entre les neurones. Par la suite, les histogrammes peri-stimulus (PSTH) des neurones ont été comparés afin de mettre en évidence la collaboration synergique temporelle dans les réseaux fonctionnels révélés. Enfin, des spectrogrammes dépendants du taux de décharges entre neurones ou stimulus-dépendants ont été calculés pour observer les oscillations gamma dans les microcircuits émergents. Un indice de corrélation (Rsc) a également été calculé pour les neurones connectés et non connectés. Résultats Les neurones liés fonctionnellement ont une activité accrue durant une période de 50 ms contrairement aux neurones fonctionnellement non connectés. Cela suggère que les connexions entre neurones mènent à une synergie de leur inter-excitabilité. En outre, l’analyse du spectrogramme dépendant du taux de décharge entre neurones révèle que les neurones connectés ont une plus forte activité gamma que les neurones non connectés durant une fenêtre d’opportunité de 50ms. L’activité gamma de basse-fréquence (20-40 Hz) a été associée aux neurones à décharge régulière (RS) et l’activité de haute fréquence (60-80 Hz) aux neurones à décharge rapide (FS). Aussi, les neurones fonctionnellement connectés ont systématiquement un Rsc plus élevé que les neurones non connectés. Finalement, l’analyse des corrélogrammes croisés révèle que dans une assemblée neuronale, le réseau fonctionnel change selon l’orientation de la grille. Nous démontrons ainsi que l’intensité des relations fonctionnelles dépend de l’orientation de la grille sinusoïdale. Cette relation nous a amené à proposer l’hypothèse suivante : outre la sélectivité des neurones aux caractères spécifiques du stimulus, il y a aussi une sélectivité du connectome. En bref, les réseaux fonctionnels «signature » sont activés dans une assemblée qui est strictement associée à l’orientation présentée et plus généralement aux propriétés des stimuli. Conclusion Cette étude souligne le fait que l’assemblée cellulaire, plutôt que le neurone, est l'unité fonctionnelle fondamentale du cerveau. Cela dilue l'importance du travail isolé de chaque neurone, c’est à dire le paradigme classique du taux de décharge qui a été traditionnellement utilisé pour étudier l'encodage des stimuli. Cette étude contribue aussi à faire avancer le débat sur les oscillations gamma, en ce qu'elles surviennent systématiquement entre neurones connectés dans les assemblées, en conséquence d’un ajout de cohérence. Bien que la taille des assemblées enregistrées soit relativement faible, cette étude suggère néanmoins une intrigante spécificité fonctionnelle entre neurones interagissant dans une assemblée en réponse à une stimulation visuelle. Cette étude peut être considérée comme une prémisse à la modélisation informatique à grande échelle de connectomes fonctionnels.