HEMISPHERIC SPECIALIZATION History of Biology Diagrams Hemispheric Specialization Goals Explore historical concepts of cerebral dominance and asymmetries in brain anatomy. Understand psychological and experimental studies of lateralization, including visual field and dichotic listening tasks. Examine motor control differences between hemispheres. Investigate unilateral brain damage and split-brain cases. Discuss the "Interpreter" concept and Hemispheric specialization of the human brain is a characteristic feature of functional cortical organization (1). Morphological, functional, metabolic and connectivity asymmetries of brain regions were traditionally correlated to optimal information processing, language function, visuospatial task, attention, and many aspects of emotion (2).
How can we get a handle on the functional relevance of hemispheric specialization in humans? One opportunity is to study patients with circumscribed brain lesions in cognitive key regions. The anterior inferior parietal lobule is particularly pregnant to reveal new insights in brain lateralization. This is referred to as hemispheric specialization or simply as brain lateralization. Such division of function between the hemispheres has long been known in humans and considered to increase 'neural space' [1] or cognitive capacity [2]. Lateralization of brain function is the view that distinct brain regions perform certain functions. For instance, it is believed that different brain areas are responsible for controlling language, formulating memories, and making movements.
hemispheric Connectivity Supporting Hemispheric ... Biology Diagrams
Explore the right hemisphere's anatomy, functions, and role in brain lateralization. Learn about disorders, myths, and the importance of hemispheric balance.
Hemispheric Specialization Goals Today's lecture considers the differences between the cerebral hemispheres. My goal for today's lecture is to cover the following topics: Historical concepts of cerebral dominance Asymmetries in brain anatomy Visual fields and dichotic listening studies Unilateral brain damage Split-brain and disconnection syndrome Control of facial emotional expressions Topic Hemispheric specialization (HS), or hemispheric dominance, is a nineteenth century concept that relates to the fact that a given hemisphere is the pilot of a given function such as, for example, the left hemisphere is dominant for language and for right-handedness. HS is grounded in both intra-hemispheric white matter connections, supported by associative bundles, and inter-hemispheric
The neural bases of hemispheric specialization Biology Diagrams
The term specialization, when applied to one of the hemispheres in the split brain, is sometimes used to imply that one hemisphere bears primary responsibility for a particular perceptual, cognitive, or motor process, usually on the basis of a performance difference between the hemispheres.
