LING 1010 Lecture Notes - Lecture 31: Transverse Temporal Gyrus, Lateral Sulcus, Parietal Lobe
The Function of the Brain: Mapping Form to Function
• Hearing and the Auditory Cortex
o The primary auditory cortex: first section of cortex that receives auditory
information
o The auditory cortex is located in the superior temporal lobe and is compromised of
transverse temporal gyri (Heschl's gyri)
• This means the gyri of the auditory cortex is buried inside the lateral fissure
(the Sylvian Fissure). Transverse means they run toward the inside of the brain,
rather than front to back like the visible gyri of the temporal love
• Vision and the Visual Cortex
o Primary visual cortex is located in the occipital lobe
• The temporal and parietal lobes however are also involved in visual processing:
identifying objects (ventral stream) and the location of the objects (dorsal
stream)
• The somatosensory cortex is the most anterior portion of the parietal lobe, lies along the
central sulcus. It is the primary receptive area for tactile sensation in the body
• The (primary) motor cortex
o The primary motor cortex is the area directly responsible for body movement
o It does not control specific muscles, but organizes complex movements that involve
different body parts, thus consisting of large groups of muscles
o It is organized around a map of the human body (somatotopically)
o The size of the cortical area devoted to a body area is proportional to the specificity
of the movement
• Finer movements have larger areas of cortex, coarser movements have smaller
ones
• Larger areas represent more sensitive parts of the body
o Homunculus: little man, represents the proportion of cortex devoted to body parts
according to somatotopic maps
Non-Language Disorders
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LING 1010 Full Course Notes
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