- Primary sensory areas
The primary sensory areas are the main cerebral areas that receive sensory information from thalamic nerve projections.
Though some areas of the human brain that receive primary sensory information remain poorly defined, each of the five sensory modalities has been recognized to relate to specific groups of
brain cellsthat begin to categorize and integrate sensory information.
Somatosensory system: The primary somatosensory cortex (SI) is across the central sulcus and behind the primary motor cortexconfigured to generally correspond with the arrangement of nearby motor cells related to specific body parts. The area includes gray matteralong the central gyrus and its extension into the postcentral gyrus.
Taste: The "primary gustatory area" is near the face representation within the postcentral gyrus. It starts at about the most lateral point on the gyrus and continues into the insular cortexwhere the postcentral gyrusfolds over the "operculum" ( Latin: "eyelid" or "lid") of the gyrus at the lateral sulcus.
Olfaction: Olfactory cortex located in the uncuswhich is found along the ventralsurface of the temporal lobe. Olfaction is the only sensory system that is not routed through the thalamus.
* Vision: The visual area known as V1, striate cortex, or (
primary visual cortex, Brodmann area 17) is located on the calcarine sulcusdeep within the inside folds of the occipital lobe.
* Hearing: The
primary auditory cortexis located on the transverse gyri that lie on the back of the superior temporal convolution of the temporal lobes.
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