Brodmann's areas (redirected from Brodmann area)

area /ar·ea/ (ār´e-ah) pl. a´reae, areas   [L.] a limited space; in anatomy, a specific surface or functional region.

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association areas  areas of the cerebral cortex (excluding primary areas) connected with each other and with the neothalamus; they are responsible for higher mental and emotional processes, including memory, learning, etc.

auditory areas  two contiguous areas of the temporal lobe in the region of the anterior transverse temporal gyrus.

Broca's motor speech area  an area comprising parts of the opercular and triangular portions of the inferior frontal gyrus; injury to this area may result in motor aphasia.

Brodmann's areas  areas of the cerebral cortex distinguished by differences in arrangement of their six cellular layers; identified by numbering each area.

embryonic area  see under disc.

germinal area  embryonic disc.

hypophysiotropic area  the hypothalamic component containing neurons that secrete hormones that regulate adenohypophysial cells.

Kiesselbach's area  one on the anterior part of the nasal septum above the intermaxillary bone, richly supplied with capillaries, and a common site of nosebleed.

motor area  any area of the cerebral cortex primarily involved in stimulating muscle contractions, often specifically the primary somatomotor area.

prefrontal area  the cortex of the frontal lobe immediately in front of the premotor cortex, concerned chiefly with associative functions.

premotor area  the motor cortex of the frontal lobe immediately in front of the precentral gyrus.

primary areas  areas of the cerebral cortex comprising the motor and sensory regions; cf. association a's.

primary somatomotor area  an area in the posterior part of the frontal lobe just anterior to the central sulcus; different regions control motor activity of specific parts of the body.

area subcallo´sa , subcallosal area a small area of cortex on the medial surface of each cerebral hemisphere.

area of superficial cardiac dullness  a triangular area of dullness observed on percussion of the chest, corresponding to the area of the heart not covered by lung tissue.

thymus-dependent area  any of the areas of the peripheral lymphoid organs populated by T lymphocytes, e.g., the paracortex in lymph nodes, the centers of the malpighian corpuscle of the spleen, and the internodal zone of Peyer's patches.

thymus-independent area  any of the areas of the peripheral lymphoid organs populated by B lymphocytes, e.g., the spleen lymph nodules and the lymph nodes.

vocal area  rima glottidis.

watershed area  any of several areas over the convexities of the cerebral or cerebellar hemispheres; at times of prolonged systemic hypotension they are particularly susceptible to infarction.

Wernicke's area , Wernicke's second motor speech area originally a term denoting a speech center on the posterior part of the superior temporal gyrus, now used to include also the supramarginal and angular gyri.

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Brodmann's areas

[brod′manz, brōt′mons]

Etymology: Korbinian Brodmann, German anatomist, 1868-1918

the 47 different areas of the cerebral cortex that are associated with specific neurologic functions and distinguished by different cellular components. They control movements of the lips and vocal cords as well as motor speech. Compare motor area. See also cerebral cortex.

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Brodmann's areas

specific occipital and preoccipital areas of the human cerebral cortex, distinguished by differences in the arrangement of their six cellular layers, and identified by number. They are considered to be the seat of specific functions of the brain.