RESUMEN
Este discute a representatividade da disciplina Psicologia do Esporte nos cursos de Psicologia e Educação Física em instituições de ensino superior reconhecidas pelo MEC e situadas na região Sul do país. Foi realizado um estudo documental, com base nos currículos das Instituições. Os resultados revelaram que no Sul do Brasil 21,02% dos cursos de Psicologia, 41,96% dos cursos de bacharelado em Educação Física e apenas 14,83% dos cursos de licenciatura em Educação Física apresentam a disciplina Psicologia do Esporte em sua grade curricular. Observou-se que a disciplina é ofertada mais frequentemente em regime obrigatório nos cursos de bacharelado em Educação Física. Nos cursos de Psicologia, quando ofertada, costuma ser optativa. Os resultados evidenciam uma maior oferta da disciplina para os estudantes de Educação Física, em relação aos de Psicologia, o que pode estar relacionado ao próprio contexto de surgimento da disciplina e sua popularização no meio acadêmico. Para que esse panorama possa mudar e se possa oferecer uma formação adequada no curso de Psicologia para fomentar essa opção de carreira, há necessidade de se repensar o currículo e o próprio perfil do egresso, de forma a dar mais oportunidade aos estudantes para que conheçam as bases teóricas e os campos de aplicação da Psicologia do Esporte. Tal lacuna pode acarretar a fragilização da disseminação desse conhecimento aos estudantes de graduação e a consequente ocupação do mercado de trabalho.(AU)
This study discusses the representativeness of Sports Psychology in Psychology and Physical Education courses at higher education institutions from Southern Brazil. A documentary study was conducted based on the institutions' curricula. Results show that 21.02% of the Psychology major, 41.96% of the bachelor's in Physical Education, and only 14.83% of the license in Physical Education offer Sports Psychology in their curricula. Sports Psychology is most often offered as a compulsory subject in the bachelor's program in Physical Education, whereas Psychology courses offer it mainly as an elective. Physical Education students have greater contact with the discipline when compared with Psychology students, which may be explained by its context of development and popularization in the academic environment. To change this scenario and offer adequate education in the Psychology programs to foster this career option, institutions must rethink their curriculum and the graduate profile itself. This would give students better opportunity to get to know its theoretical bases and fields of application. Such a gap can hinder the dissemination of this knowledge to undergraduate students and the consequent labor market occupation.(AU)
El objetivo de este estudio es discutir la representatividad de la materia Psicología del Deporte en los cursos de Psicología y Educación Física en instituciones de educación superior de la región Sur de Brasil, reconocidas por el Ministerio de Educación (MEC). Se realizó un estudio documental, basado en los planes de estudio de las instituciones. Los resultados revelaron que, en el Sur de Brasil, el 21,02% de los cursos de Psicología, el 41,96% de los cursos de licenciatura en Educación Física y sólo el 14,83% de los cursos de profesorado en Educación tienen la materia Psicología del Deporte en sus planes de estudio. Se observó que la materia Psicología del Deporte se ofrece con mayor frecuencia como asignatura obligatoria en los cursos de licenciatura en Educación Física. Cuando se ofrece en los cursos de Psicología, es una materia optativa. Los resultados muestran una mayor oferta para los estudiantes de Educación Física en comparación con Psicología, lo que puede estar relacionado con el contexto del surgimiento de la Psicología del Deporte como materia y su popularización en el ámbito académico. Para que este escenario cambie y sea posible ofrecer una formación adecuada en el curso de Psicología con el fin de fomentar esta opción de carrera, es necesario repensar el plan de estudios y el perfil del egresado, así los estudiantes tendrán más oportunidades de conocer sus bases teóricas y sus campos de actuación. Tal brecha puede debilitar la difusión de este conocimiento a los estudiantes de grado y la consecuente ocupación en el mercado laboral.(AU)
Asunto(s)
Humanos , Masculino , Femenino , Educación y Entrenamiento Físico , Psicología , Curriculum , Evaluación Educacional , Psicología del Deporte , Ansiedad , Percepción , Apetito , Satisfacción Personal , Personalidad , Aptitud , Fisiología , Competencia Profesional , Ubicación de la Práctica Profesional , Psicología Educacional , Calidad de Vida , Rehabilitación , Atención , Autoimagen , Programas de Autoevaluación , Fútbol , Cambio Social , Control Social Formal , Especialización , Deportes , Medicina Deportiva , Estrés Fisiológico , Estrés Psicológico , Atletismo , Orientación Vocacional , Heridas y Lesiones , Ciclismo , Fenómenos Biomecánicos , Terapia Cognitivo-Conductual , Salud , Salud Mental , Aptitud Física , Responsabilidad Legal , Caminata , Terapia por Relajación , Desarrollo de Personal , Guías como Asunto , Personas con Discapacidad , Cognición , Diversidad Cultural , Creatividad , Habilitación Profesional , Características Culturales , Toma de Decisiones , Regulación Gubernamental , Depresión , Dieta , Educación , Emociones , Política de Innovación y Desarrollo , Política de Educación Superior , Organismos Nacionales de Educación Superior , Capacitación Profesional , Fatiga , Fatiga Mental , Ensayos Analíticos de Alto Rendimiento , Conducta Sedentaria , Atletas , Resistencia a la Enfermedad , Ciencias de la Nutrición y del Deporte , Autocontrol , Volver al Deporte , Capacidad Cardiovascular , Tutoría , Rendimiento Académico , Rendimiento Físico Funcional , Agotamiento Psicológico , Derrota Social , Bienestar Psicológico , Dinámica de Grupo , Sindrome de Sobreentrenamiento , Hábitos , Promoción de la Salud , Homeostasis , Ergonomía , Jurisprudencia , Liderazgo , Actividades Recreativas , Estilo de Vida , Memoria , Motivación , Actividad Motora , Relajación Muscular , Tono Muscular , NeuroanatomíaRESUMEN
OBJECTIVE: Deep brain stimulation (DBS) of the centromedian thalamic nucleus has been reportedly used to treat severe Tourette syndrome, yielding promising outcomes. However, it remains unclear how DBS electrode position and stimulation parameters modulate the specific area and related networks. The authors aimed to evaluate the relationships between the anatomical location of stimulation fields and clinical responses, including therapeutic and side effects. METHODS: The authors collected data from 8 patients with Tourette syndrome who were treated with DBS. The authors selected the active contact following threshold tests of acute side effects and gradually increased the stimulation intensity within the therapeutic window such that acute and chronic side effects could be avoided at each programming session. The patients were carefully interviewed, and stimulation-induced side effects were recorded. Clinical outcomes were evaluated using the Yale Global Tic Severity Scale, the Yale-Brown Obsessive-Compulsive Scale, and the Hamilton Depression Rating Scale. The DBS lead location was evaluated in the normalized brain space by using a 3D atlas. The volume of tissue activated was determined, and the associated normative connective analyses were performed to link the stimulation field with the therapeutic and side effects. RESULTS: The mean follow-up period was 10.9 ± 3.9 months. All clinical scales showed significant improvement. Whereas the volume of tissue activated associated with therapeutic effects covers the centromedian and ventrolateral nuclei and showed an association with motor networks, those associated with paresthesia and dizziness were associated with stimulation of the ventralis caudalis and red nucleus, respectively. Depressed mood was associated with the spread of stimulation current to the mediodorsal nucleus and showed an association with limbic networks. CONCLUSIONS: This study addresses the importance of accurate implantation of DBS electrodes for obtaining standardized clinical outcomes and suggests that meticulous programming with careful monitoring of clinical symptoms may improve outcomes.
Asunto(s)
Estimulación Encefálica Profunda/métodos , Tálamo/anatomía & histología , Tálamo/cirugía , Síndrome de Tourette/patología , Síndrome de Tourette/cirugía , Adolescente , Adulto , Niño , Preescolar , Estimulación Encefálica Profunda/efectos adversos , Depresión/etiología , Mareo/etiología , Femenino , Estudios de Seguimiento , Humanos , Núcleos Talámicos Intralaminares/anatomía & histología , Núcleos Talámicos Intralaminares/diagnóstico por imagen , Núcleos Talámicos Intralaminares/cirugía , Masculino , Persona de Mediana Edad , Red Nerviosa/anatomía & histología , Neuroanatomía , Parestesia/etiología , Complicaciones Posoperatorias , Estudios Prospectivos , Escalas de Valoración Psiquiátrica , Núcleo Rojo/anatomía & histología , Núcleo Rojo/cirugía , Resultado del Tratamiento , Núcleos Talámicos Ventrales/anatomía & histología , Núcleos Talámicos Ventrales/diagnóstico por imagen , Núcleos Talámicos Ventrales/cirugía , Adulto JovenRESUMEN
History of anatomy is as long as the history of medicine itself. Development of this basic science was not possible without the dedicative effort of those physicians and scholars who were committed to discover the mysteries of human anatomy. In this regard, Iranian scholars played an important role in the development of the anatomical sciences despite the religious limitations in their societies. Mansur ibn Ilyas Shirazi is an Iranian physician of fourteenth century who wrote the first color illustrated anatomical book, Mansur's Anatomy. A considerable portion of the book has been dedicated to the central and peripheral nervous system so that he could be considered as one of the pioneers of neuroanatomy.
Asunto(s)
Medicina Arábiga , Médicos , Historia Medieval , Humanos , Irán , Masculino , Medicina Arábiga/historia , Neuroanatomía , Sistema Nervioso Periférico , Médicos/historiaRESUMEN
In mammals, kisspeptin neurons are the key components of the hypothalamic neuronal networks that regulate the onset of puberty, account for the pulsatile secretion of gonadotropin-releasing hormone (GnRH) and mediate negative and positive estrogen feedback signals to GnRH neurons. Being directly connected anatomically and functionally to the hypophysiotropic GnRH system, the major kisspeptin cell groups of the preoptic area/rostral hypothalamus and the arcuate (or infundibular) nucleus, respectively, are ideally positioned to serve as key nodes which integrate various types of environmental, endocrine, and metabolic signals that can influence fertility. This chapter provides an overview of the current state of knowledge on the anatomy, functions, and plasticity of brain kisspeptin systems based on the wide literature available from different laboratory and domestic species. Then, the species-specific features of human hypothalamic kisspeptin neurons are described, covering their topography, morphology, unique neuropeptide content, plasticity, and connectivity to hypophysiotropic GnRH neurons. Some newly emerging roles of central kisspeptin signaling in behavior and finally, clinical perspectives, are discussed.
Asunto(s)
Kisspeptinas , Neuroanatomía , Animales , Núcleo Arqueado del Hipotálamo/metabolismo , Hormona Liberadora de Gonadotropina/metabolismo , Humanos , Hipotálamo/metabolismo , Kisspeptinas/metabolismoRESUMEN
The link between ancient Greek medicine and the Arabic translation period in the 9th century cannot be understood without studying the contributions of Syriac scholars. With their mastery of Greek and the related Semitic languages of Syriac and Arabic, they initiated a scientific translation process with methods that prevail to this day. In this paper, we reviewed Hunayn Ibn Isshaq's Ten Treatises on the Eye to elucidate the original contributions of the Syriac physicians to the field of neurologic surgery. We analyzed the oldest known diagram of orbital anatomy along with Hunayn's genuine ideas on the optic nerve anatomy and pathology, optic chiasm, afferent pupillary reflex, and papilledema and venous congestion. We also reviewed the neurosurgical elements found in the Syriac Book of Medicines including the thought process in localizing neurologic deficits based on clinical experience and anatomic dissections and the earliest recorded description of brachial plexus pathology.
Asunto(s)
Neurocirugia/historia , Libros de Texto como Asunto/historia , Historia Antigua , Historia Medieval , Humanos , Medicina Arábiga/historia , Medio Oriente , Neuroanatomía/historia , TraduccionesRESUMEN
The most distant roots of neuroanatomy trace back to antiquity, with the first human dissections, but no document which would identify the thalamus as a brain structure has reached us. Claudius Galenus (Galen) gave to the thalamus the name 'thalamus nervorum opticorum', but later on, other names were used (e.g., anchae, or buttocks-like). In 1543, Andreas Vesalius provided the first quality illustrations of the thalamus. During the 19th century, tissue staining techniques and ablative studies contributed to the breakdown of the thalamus into subregions and nuclei. The next step was taken using radiomarkers to identify connections in the absence of lesions. Anterograde and retrograde tracing methods arose in the late 1960s, supporting extension, revision, or confirmation of previously established knowledge. The use of the first viral tracers introduced a new methodological breakthrough in the mid-1970s. Another important step was supported by advances in neuroimaging of the thalamus in the 21th century. The current review follows the history of the thalamus through these technical revolutions from Antiquity to the present day.
Asunto(s)
Neuroanatomía , Tálamo , Encéfalo , Historia del Siglo XX , Humanos , Conocimiento , NeuroimagenRESUMEN
The aortic plexus serves as the primary gateway for sympathetic fibers innervating the pelvic viscera. Damage to this plexus and/or its associated branches can lead to an assortment of neurogenic complications such as bladder dysregulation or retrograde ejaculation. The neuroanatomy of this autonomic plexus has only recently been clarified in humans; as such, the precise function of its constituent fibers is still not clear. Further study into the functional neuroanatomy of the aortic plexus could help refine nerve-sparing surgical procedures that risk debilitating neurogenic complications, while also advancing understanding of peripheral sympathetic circuitry. To this end, the current study employed an in vivo electrostimulation paradigm in a porcine model, in combination with lipophilic neuronal tracing experiments in fixed, post-mortem human tissues, to further characterize the functional neuroanatomy of the aortic plexus. Electrostimulation results demonstrated that caudal lumbar splanchnic nerves provide primary control over the porcine bladder neck in comparison to other constituent fibers within the aortic plexus. Ex vivo human data revealed that the prehypogastric ganglion contains a significant number of neurons projecting to the superior hypogastric plexus, and that these neurons are arranged in a topographic manner within the ganglion. Altogether, these findings suggest that a pivotal sympathetic pathway mediating bladder neck contraction courses through the caudal lumbar splanchnic nerves, prehypogastric and inferior mesenteric ganglia and superior hypogastric plexus.
Asunto(s)
Plexo Hipogástrico , Neuroanatomía , Animales , Ganglios Simpáticos , Humanos , Masculino , Pelvis , Nervios Esplácnicos , PorcinosRESUMEN
In 1873 Camillo Golgi published an article that contained the description of entire nerve cells stained in black with a new histological procedure, the black reaction. He subsequently organized all the observations made with this method in a book published in 1885. On the basis of these studies, Golgi developed a physiological model of the brain that was influenced by a holistic conception he had in mind. He named this theory diffuse nervous network, assuming that the axonal prolongations were fused (or intimately interlaced) in a diffuse web along which the nervous impulse propagated. One of the scientists who quickly understood the importance of Golgi's results was the Spanish anatomist Santiago Ramón y Cajal. However, when he studied the brain with the black reaction, he had in mind the idea of the nerve cells as independent "units" (named neurons by Waldeyer, 1891). Thus Ramón y Cajal quickly became the champion of the neuron theory that paradoxically developed thanks to the same black reaction used by Golgi for the formulation of the opposite diffuse nervous network theory. The controversy between Golgi and Ramón y Cajal represents a dramatic instance of a theory-driven perception of the same morphological evidence.
Asunto(s)
Encéfalo/anatomía & histología , Imaginación , Neuronas , Neurociencias/historia , Fisiología , Animales , Encéfalo/ultraestructura , Historia del Siglo XIX , Historia del Siglo XX , Humanos , Neuroanatomía/historia , Neuronas/ultraestructura , Fisiología/historia , UltrasonografíaAsunto(s)
Encéfalo/fisiología , Meditación/psicología , Neuroanatomía , Satisfacción del Paciente , Estado de Salud , HumanosRESUMEN
It is now accepted that vasopressin, through V1A/V1B receptors, centrally regulates cognitive functions such as memory, affiliation, stress, fear and depression. However, the respective roles of these receptor isoforms and their contribution to stress-related pathologies remain uncertain. The development of new therapeutic treatments requires a precise knowledge of the distribution of these receptors within the brain, which has been so far hampered by the lack of selective V1B markers. In the present study, we have determined the pharmacological properties of three new potent rat V1B fluorescent ligands and demonstrated that they constitute valuable tools for simultaneous visualization and activation of native V1B receptors in living rat brain tissue. Thus, d[Leu4,Lys-Alexa 647)8]VP (analogue 3), the compound with the best affinity-selectivity/fluorescence ratio for the V1B receptor emerged as the most promising. The rat brain regions most concerned by stress such as hippocampus, olfactory bulbs, cortex and amygdala display the highest V1B fluorescent labelling with analogue 3. In the hippocampus CA2, V1B receptors are located on glutamatergic, not GABAergic neurones, and are absent from astrocytes. Using AVP-EGFP rats, we demonstrate the presence of V1B autoreceptors on AVP-secreting neurones not only in the hypothalamus, but also sparsely in the hippocampus. Finally, using both electrophysiology and visualization of ERK phosphorylation, we show analogue 3-induced activation of the V1B receptor in situ. This will help to analyse expression and functionality of V1B receptors in the brain and contribute to further explore the AVPergic circuitry in normal and pathological conditions.
Asunto(s)
Encéfalo/anatomía & histología , Encéfalo/metabolismo , Colorantes Fluorescentes/metabolismo , Receptores de Vasopresinas/metabolismo , Animales , Arginina Vasopresina/metabolismo , Astrocitos/metabolismo , Células CHO , Cricetinae , Cricetulus , Células HEK293 , Humanos , Hipotálamo/metabolismo , Ligandos , Masculino , Neuroanatomía , Neuronas/metabolismo , Hipófisis/citología , Ratas Sprague-Dawley , Receptores de GABA/metabolismo , Coloración y Etiquetado , Vasopresinas/metabolismoRESUMEN
Introducción. Todos los días, millones de profesionales utilizan un sinfín de palabras técnicas para referirse a las distintas estructuras que se hallan dentro del cráneo, pero pocos sabrían explicar su procedencia. En este trabajo se indaga sobre el origen etimológico de algunos de estos términos neuroanatómicos. Desarrollo. Se realiza un recorrido etimológico por el sistema nervioso central; recorrido que no pretende ser una revisión exhaustiva y pormenorizada de los términos actualmente en uso, sino familiarizar al lector con el pasado lingüístico de palabras como cerebro, hipocampo, tálamo, claustro, fórnix, cuerpo calloso o sistema límbico. Todas ellas provienen del griego o del latín, durante siglos las lenguas francas de la ciencia. También se analiza la evolución de la palabra meninges, originalmente de procedencia grecolatina, si bien los usos actuales derivan del árabe. Conclusiones. Los términos neuroanatómicos que se utilizan hoy en día no proceden de palabras que asocien una determinada estructura encefálica con su función, sino de palabras que reflejan la similitud formal o conceptual entre una estructura y una entidad familiar o cotidiana (por ejemplo, un objeto o una parte del cuerpo humano). En otros casos, estas palabras indican la ubicación espacial de la estructura neuroanatómica respecto a un tercero, o bien son términos derivados de personajes de la mitología grecolatina (AU)
Introduction. Every day millions of professionals use a countless number of technical words to refer to the different structures inside the skull. But few of them would know how to explain their origin. In this study we take an in-depth look into the etymological origins of some of these neuroanatomical terms. Development. The study takes an etymological tour of the central nervous system. It is in no way meant to be an exhaustive, detailed review of the terms currently in use, but instead a means to familiarise the reader with the linguistic past of words like brain, hippocampus, thalamus, claustrum, fornix, corpus callosum or limbic system. All of them come from either Greek or Latin, which were used for centuries as the lingua francas of science. The study also analyses the evolution of the word meninges, originally of Greco-Latin origin, although its current usages derive from Arabic. Conclusions. The neuroanatomical terms that are in use today do not come from words that associate a particular brain structure with its function, but instead from words that reflect the formal or conceptual similarity between a structure and a familiar or everyday entity (for example, an object or a part of the human body). In other cases, these words indicate the spatial location of the neuroanatomical structure with respect to a third, or they may be terms derived from characters in Greco-Latin mythology (AU)
Asunto(s)
Humanos , Neuroanatomía , Sistema Nervioso Central/anatomía & histología , Cerebro/anatomía & histología , Encéfalo/anatomía & histología , Cerebelo/anatomía & histología , Tálamo/anatomía & histología , Terminología como Asunto , MitologíaRESUMEN
The frontal association cortex is composed of the prefrontal cortex and the motor-related areas except the primary motor cortex (i.e., the so-called higher motor areas), and is well-developed in primates, including humans. The prefrontal cortex receives and integrates large bits of diverse information from the parietal, temporal, and occipital association cortical areas (termed the posterior association cortex), and paralimbic association cortical areas. This information is then transmitted to the primary motor cortex via multiple motor-related areas. Given these facts, it is likely that the prefrontal cortex exerts executive functions for behavioral control. The functional input pathways from the posterior and paralimbic association cortical areas to the prefrontal cortex are classified primarily into six groups. Cognitive signals derived from the prefrontal cortex are conveyed to the rostral motor-related areas to transform them into motor signals, which finally enter the primary motor cortex via the caudal motor-related areas. Furthermore, it has been shown that, similar to the primary motor cortex, areas of the frontal association cortex form individual networks (known as "loop circuits") with the basal ganglia and cerebellum via the thalamus, and hence are extensively involved in the expression and control of behavioral actions.
Asunto(s)
Ganglios Basales/anatomía & histología , Mapeo Encefálico , Corteza Motora/anatomía & histología , Vías Nerviosas/anatomía & histología , Neuroanatomía , Corteza Prefrontal/anatomía & histología , Tálamo/anatomía & histología , Animales , HumanosRESUMEN
Meditation is a family of mental practices that encompasses a wide array of techniques employing distinctive mental strategies. We systematically reviewed 78 functional neuroimaging (fMRI and PET) studies of meditation, and used activation likelihood estimation to meta-analyze 257 peak foci from 31 experiments involving 527 participants. We found reliably dissociable patterns of brain activation and deactivation for four common styles of meditation (focused attention, mantra recitation, open monitoring, and compassion/loving-kindness), and suggestive differences for three others (visualization, sense-withdrawal, and non-dual awareness practices). Overall, dissociable activation patterns are congruent with the psychological and behavioral aims of each practice. Some brain areas are recruited consistently across multiple techniques-including insula, pre/supplementary motor cortices, dorsal anterior cingulate cortex, and frontopolar cortex-but convergence is the exception rather than the rule. A preliminary effect-size meta-analysis found medium effects for both activations (d=0.59) and deactivations (d=-0.74), suggesting potential practical significance. Our meta-analysis supports the neurophysiological dissociability of meditation practices, but also raises many methodological concerns and suggests avenues for future research.
Asunto(s)
Neuroimagen Funcional , Humanos , Funciones de Verosimilitud , Meditación , Neuroanatomía/métodosRESUMEN
The 1970s saw the introduction of new technologies for tracing axons both anterogradely and retrogradely. These methods allowed us to visualize fine, unmyelinated pathways for the first time, such as the hypothalamic pathways that control the autonomic nervous system. As a result, we were able to identify the paraventricular nucleus and lateral hypothalamus as the key sites that provide direct inputs to the autonomic preganglionic neurons in the medulla and spinal cord. These findings revolutionized our understanding of hypothalamic control of the autonomic nervous system.
Asunto(s)
Sistema Nervioso Autónomo/anatomía & histología , Hipotálamo/anatomía & histología , Neuroanatomía/historia , Animales , Historia del Siglo XX , Humanos , Bulbo Raquídeo/anatomía & histología , Vías Nerviosas/anatomía & histología , Técnicas de Trazados de Vías Neuroanatómicas/historia , Neuroanatomía/métodos , Neuronas/citología , Núcleo Hipotalámico Paraventricular/anatomía & histología , Médula Espinal/anatomía & histologíaRESUMEN
The term ependyma is considered as a translation of the expression integumentum ventriculorum cerebri or Überzug der Hirnhöhlen [the lining of the brain ventricles] in German used by the Wenzel brothers (1812). The first documented usage of this term is found in the work of the German anatomist Karl Ernst Bock from the year 1839, but nobody has ever claimed authorship of the word. Formulations such as "so-called" are used in connection with the term, avoiding any reference to a specific originator. The term first started being used in anatomical literature written in German. In its subsequent history, various interpretations of the meaning of the term have emerged, and certain attempts have also been made to change its formal aspect.
Asunto(s)
Epéndimo/anatomía & histología , Neuroanatomía/historia , Terminología como Asunto , Europa (Continente) , Historia del Siglo XV , Historia del Siglo XVI , Historia del Siglo XVII , Historia del Siglo XVIII , Historia del Siglo XIX , Historia del Siglo XX , Historia del Siglo XXI , Historia Antigua , Historia Medieval , HumanosRESUMEN
In sport events like Olympic Games or World Championships competitive athletes keep pushing the boundaries of human performance. Compared to team sports, high achievements in many athletic disciplines depend solely on the individual's performance. Contrasting previous research looking for expertise-related differences in brain anatomy at the group level, we aim to demonstrate changes in individual top athlete's brain, which would be averaged out in a group analysis. We compared structural magnetic resonance images (MRI) of three professional track-and-field athletes to age-, gender- and education-matched control subjects. To determine brain features specific to these top athletes, we tested for significant deviations in structural grey matter density between each of the three top athletes and a carefully matched control sample. While total brain volumes were comparable between athletes and controls, we show regional grey matter differences in striatum and thalamus. The demonstrated brain anatomy patterns remained stable and were detected after 2 years with Olympic Games in between. We also found differences in the fusiform gyrus in two top long jumpers. We interpret our findings in reward-related areas as correlates of top athletes' persistency to reach top-level skill performance over years.
Asunto(s)
Atletas , Encéfalo/anatomía & histología , Neuroanatomía/métodos , Atletismo/fisiología , Adulto , Rendimiento Atlético/fisiología , Cuerpo Estriado/anatomía & histología , Sustancia Gris/anatomía & histología , Humanos , Imagen por Resonancia Magnética , Masculino , Músculo Esquelético/fisiología , Resistencia Física/fisiología , Esfuerzo Físico/fisiología , Tálamo/anatomía & histologíaRESUMEN
Several cross-sectional studies have documented neuroanatomical changes in individuals with a long history of meditation, while a few evidences are available about the interaction between neuroanatomical and psychological changes even during brief exposure to meditation. Here we analyzed several morphometric indexes at both cortical and subcortical brain level, as well as multiple psychological dimensions, before and after a brief -8 weeks- Mindfulness Based Stress Reduction (MBSR) training program, in a group of 23 meditation naïve-subjects compared to age-gender matched subjects. We found a significant cortical thickness increase in the right insula and the somatosensory cortex of MBSR trainees, coupled with a significant reduction of several psychological indices related to worry, state anxiety, depression and alexithymia. Most importantly, an interesting correlation between the increase in right insula thickness and the decrease in alexithymia levels during the MBSR training were observed. Moreover, a multivariate pattern classification approach allowed to identify a cluster of regions more responsive to MBSR training across subjects. Taken together, these findings documented the significant impact of a brief MBSR training on brain structures, as well as stressing the idea of MBSR as a valuable tool for alexithymia modulation, also originally providing a plausible neurobiological evidence of a major role of right insula into mediating the observed psychological changes.
Asunto(s)
Encéfalo/anatomía & histología , Atención Plena , Psicología , Adulto , Encéfalo/fisiología , Femenino , Humanos , Masculino , Meditación/psicología , Neuroanatomía , Tamaño de los ÓrganosRESUMEN
Up to now, in the treatment of stroke patients by acupuncture therapy, three main representative achievements involving scalp acupuncture intervention, "Xing Nao Kai Qiao" (restoring consciousness and inducing resuscitation) acupuncture technique and nape acupuncture therapy have been got. Regarding their neurobiological mechanisms, the scalp acupuncture therapy is based on the functional localization of the cerebral cortex, "Xing Nao Kai Qiao" acupuncture therapy is closely related to nerve stem stimulation, and the nape acupuncture therapy is based on the nerve innervation of the regional neck-nape area in obtaining therapeutic effects. In fact, effects of these three acupuncture interventions are all closely associated with the modern neuroanatomy. In the treatment of post-stroke spastic paralysis, cognitive disorder and depression with acupuncture therapy, modern neuroanatomical knowledge should be one of the key theoretical basis and new therapeutic techniques should be explored and developed continuously.
Asunto(s)
Terapia por Acupuntura , Accidente Cerebrovascular/terapia , Humanos , Sistema Nervioso/anatomía & histología , NeuroanatomíaRESUMEN
The purpose of this article is to review the anatomical illustrations and physiological demonstrations of sixteenth-century Flemish-born anatomist and physician Andreas Vesalius concerning the recurrent laryngeal nerves. Although Vesalius was primarily an anatomist, he also used vivisection as a pedagogical device to help his students understand the function of structures within the fabric of the body that they had previously studied in anatomical detail. Vesalius's masterwork, De humani corporis fabrica or simply the Fabrica (1543, 1555), was ostensibly an anatomy text, but Vesalius included textual and figural references to his use of vivisection to explicate the function of specific structures. Even as he began to criticize the errors in Galen's anatomical works, Vesalius nevertheless adopted some of Galen's classic physiological demonstrations, in particular the ligation (and subsequent release) of the recurrent laryngeal nerves of a pig to demonstrate their role in generating the pig's squeal. Vesalius's illustrations concerning the recurrent laryngeal nerve in the Fabrica were of two types: elegant anatomical woodcut plates-unsurpassed for their clarity, accuracy, and detail - and the distinctly inelegant historiated initial Q, depicting a throng of putti busily engaged in vivisecting a pig. Vesalius' anatomical plates were heavily plagiarized while the historiated initials, showing the rough work of an anatomist or surgeon, were largely ignored and remain little recognized today. While Vesalius' anatomical illustrations of the recurrent laryngeal nerves contained some errors, they were a dramatic departure from prior meager efforts at medical illustration and indeed far surpassed all contemporary published illustrations by others. Vesalius was also influential in reviving Galen's approach to vivisection, at least for pedagogical purposes, if not really then yet as a full-fledged investigative technique.
Asunto(s)
Anatomía/historia , Ilustración Médica/historia , Historia del Siglo XVI , Historia Antigua , Humanos , Italia , Países Bajos , Neuroanatomía/historia , Nervio Laríngeo Recurrente/anatomía & histología , Nervio Laríngeo Recurrente/fisiología , Libros de Texto como Asunto/historiaRESUMEN
This article analyzes brain scientists' attempts to trace morality in the brain in Germany from 1930 to 1960. The debate around Karl Kleist's localization of the Gemeinschafts-Ich [community-I] in the 1930s is depicted in order to illustrate the central arguments for and against localizations of morality. The focus of this article is on the period 1936-1960 in which experts put forth specific ideas on morality's cerebral underpinnings that mirror the larger theoretical shift from strict localization doctrine to a more holistic understanding of the brain. As a result of this shift, experts avoided exact localizations of morality. Instead, they posited correlations between brain areas and morality. The analysis illustrates the dependence of neuropathological research on morality on general theories of brain functioning and marks a first contribution to the history of the neuroscience of morality for the time after 1930.