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It has been estimated that if the human cerebellar cortex could be completely unfolded it would give rise to a layer of neural tissue about 1 meter long and 10 centimeters wide—a total surface area of 500-1000 square cm, [4] all packed within a volume of 100-150 cubic cm. [5] [6] Underneath the gray matter of the cortex lies white matter ...
The dorsal claustrum has bi-directional connections with motor structures in the cortex. [1] The relationship between the animal's movement and how neurons in the dorsocaudal claustrum behave are as follows: 70% of movement neurons are non-selective and can fire to do any push, pull or turn movements in the forelimb; the rest were more ...
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Cortex Primary visual cortex (V1) V2; V3; V4; Gyri. Lateral occipital gyrus; Other Cuneus; Brodmann areas 17 (V1, primary visual cortex); 18, 19; Temporal lobe. Cortex Primary auditory cortex (A1) Secondary auditory cortex (A2) Inferior temporal cortex; V5/MT; Posterior inferior temporal cortex; Gyri. Superior temporal gyrus; Middle temporal ...
The rest of the cortex is of allocortex, which has three or four layers. [7] The cortex is mapped by divisions into about fifty different functional areas known as Brodmann's areas. These areas are distinctly different when seen under a microscope. [22] The cortex is divided into two main functional areas – a motor cortex and a sensory cortex ...
The organ of Corti projects in an orderly fashion to structures in the brainstem (namely, the cochlear nuclei and the inferior colliculus), and from there to the medial geniculate nucleus of the thalamus and the primary auditory cortex. Adjacent sites on the organ of Corti, which are themselves selective for the sound frequency, are represented ...
Diagram of the primary components of a chordotonal organ scolopidium. Chordotonal organs can be composed of a single scolopidium with only a single sensory, bipolar neuron (such as the tympanal ear of a notodontid moth), or up to several thousand scolopidia, each equipped with up to four sensory neurons (as in the mosquito Johnston's organ). [6]
Fibres arise from the primary motor cortex (about 30%), supplementary motor area and the premotor cortex (together also about 30%), and the somatosensory cortex, parietal lobe, and cingulate gyrus supplies the rest. [2] The cells have their bodies in the cerebral cortex, and the axons form the bulk of the pyramidal tracts. [4]