postcentral gyrus การใช้

• The third order neurons arise from thalamus to the postcentral gyrus.
• The representation of sensory information in the postcentral gyrus is organized somatotopically.
• It transmits information from the body to the postcentral gyrus of the cerebral cortex.
• At least four separate, anatomically distinct sensory homunculi have been identified in the postcentral gyrus.
• The third order neuron in the thalamus then connects to the sensory cortex of the postcentral gyrus.
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• The areas of the brain that were activated are the bilateral superior parietal lobules and the inferior parietal and postcentral gyrus.
• From the ventral posterolateral nucleus in the thalamus, sensory information is relayed upward to the somatosensory cortex of the postcentral gyrus.
• The lateral "'postcentral gyrus "'is a prominent structure in the parietal lobe of the human brain.
• Sensation has been tested in patients through the stimulation of the postcentral gyrus, with a drop in amplitude of sensory responses occurring towards the central sulcus.
• This sensation may progress along a limb or to adjacent cutaneous body areas, reflecting abnormal neuronal firing in the postcentral gyrus where an epileptic discharge is propagated.
• Immediately posterior to the central sulcus, and the most anterior part of the parietal lobe, is the postcentral gyrus ( Brodmann area 3 ), the primary somatosensory cortical area.
• The "'superior parietal lobule "'is bounded in front by the upper part of the postcentral sulcus, but is usually connected with the postcentral gyrus above the end of the sulcus.
• Hearing about these results, Vilayanur S . Ramachandran hypothesized that phantom limb sensations in humans could be due to reorganization in the somatosensory cortex, which is located in the postcentral gyrus, and which receives input from the limbs and body.
• Note that the central sulcus ( sometimes referred to as the central fissure ) divides the primary motor cortex ( on the precentral gyrus of the posterior frontal lobe ) from the somatosensory cortex ( on the postcentral gyrus of the anterior parietal lobe ).
• Where BA 1 occupies the apex of the postcentral gyrus, the rostral border of BA 3a is in the nadir of the Central sulcus, and is caudally followed by BA 3b, then BA 1, with BA 2 following and ending in the nadir of the postcentral sulcus.
• The thalamus diverts some sensory information to the cerebellum and the "'basal nuclei "'to complete the motor feedback loop while some sensory information ascends directly to the postcentral gyrus of the parietal lobe of the brain via "'third-order neurons " '.
• We found that transsexual subjects did not differ significantly from controls sharing their gender identity but were different from those sharing their biological gender in their regional GM volume of several brain areas, including the left and right precentral gyri, the left postcentral gyrus ( including the somatosensory cortex and the primary motor cortex ), the left posterior cingulate, precueneus and calcarinus, the right cuneus, the right fusiform, lingual, middle and inferior occipital, and inferior temporal gyri.