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The superior temporal gyrus (STG [1]) is one of three (sometimes two) gyri in the temporal lobe of the human brain, which is located laterally to the head, situated somewhat above the external ear. The superior temporal gyrus is bounded by: the lateral sulcus above; the superior temporal sulcus (not always present or visible) below;
Coronal section of a human brain. BA41(red) and BA42(green) are auditory cortex. BA22(yellow) is Brodmann area 22, HF(blue) is hippocampal formation and pSTG is posterior part of superior temporal gyrus. The auditory cortex is the part of the temporal lobe that processes auditory information in humans and many other vertebrates.
Brodmann area 22 is a Brodmann's area that is cytoarchitecturally located in the posterior superior temporal gyrus of the brain. [1] In the left cerebral hemisphere, it is one portion of Wernicke's area. [1] The left hemisphere BA22 helps with generation and understanding of individual words.
Area 38 – Temporopolar area (most rostral part of the superior and middle temporal gyri) Area 39 – Angular gyrus, considered by some to be part of Wernicke's area; Area 40 – Supramarginal gyrus considered by some to be part of Wernicke's area; Areas 41 and 42 – Auditory cortex; Area 43 – Primary gustatory cortex
The transverse temporal gyrus, which contains the auditosensory cortex, processes sound impulse in low frequency. [13] Its lateral aspect maps the sound impulse in a tonotopic organisation that produces a mirror image of spatial gradients of frequency sensitivity. [14] It depends on the duration and intensity of the sound stimuli.
Perception of sound is associated with the left posterior superior temporal gyrus (STG). The superior temporal gyrus contains several important structures of the brain, including Brodmann areas 41 and 42, marking the location of the primary auditory cortex, the cortical region responsible for the sensation of basic characteristics of sound such ...
The auditory ventral stream (AVS) connects the auditory cortex with the middle temporal gyrus and temporal pole, which in turn connects with the inferior frontal gyrus. This pathway is responsible for sound recognition, and is accordingly known as the auditory 'what' pathway. The functions of the AVS include the following.
The planum temporale makes up the superior surface of the superior temporal gyrus to the parietal lobe. [4] The posterior extent of the planum temporale has been variably defined, which has led to disputes to estimates of size and degree of asymmetry.