For the Animal Collective album, see Transverse Temporal Gyrus.
Transverse temporal gyrus
Section of brain showing upper surface of temporal lobe ("transverse temporal gyri" visible at center left)
Human brain view on transverse temporal and insular gyri (gyri temporales transversi are #4)
Details
Part of
Temporal lobe
Parts
Primary auditory cortex
Artery
Middle cerebral
Identifiers
Latin
gyri temporales transversi
NeuroNames
1520
TA98
A14.1.09.140
TA2
5491
FMA
72016
Anatomical terms of neuroanatomy
[edit on Wikidata]
The transverse temporal gyri, also called Heschl's gyri (/ˈhɛʃəlzˈdʒaɪraɪ/) or Heschl's convolutions, are gyri found in the area of primary auditory cortex buried within the lateral sulcus of the human brain, occupying Brodmann areas 41 and 42. Transverse temporal gyri are superior to and separated from the planum temporale (cortex involved in language production) by Heschl's sulcus. Transverse temporal gyri are found in varying numbers in both the right and left hemispheres of the brain and one study found that this number is not related to the hemisphere or dominance of hemisphere studied in subjects.[citation needed] Transverse temporal gyri can be viewed in the sagittal plane as either an omega shape (if one gyrus is present) or a heart shape (if two gyri and a sulcus are present).[1]
Transverse temporal gyri are the first cortical structures to process incoming auditory information. Anatomically, the transverse temporal gyri are distinct in that they run mediolaterally (toward the center of the brain), rather than front to back as all other temporal lobe gyri run.
The Heschl's gyri are named after Richard L. Heschl.
^Yousry TA, Fesl G, Buttner A, Noachtar S, Schmid UD (1997). "Heschl's gyrus-Anatomic description and methods of identification on magnetic resonance imaging" (PDF). Int J Neuroradiol. 3 (1): 2–12.
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