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The
transverse temporal gyri (also called
Heschl's gyri or
Heschl's convolutions) are found in the area of
primary auditory cortexThe primary auditory cortex is the region of the brain that is responsible for the processing of auditory information. Corresponding roughly with Brodmann areas 41 and 42, it is located on the temporal lobe, and performs the basics of hearing—pitch and volume...
in the
superior temporal gyrusThe superior temporal gyrus is one of three 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;...
of the human
brainThe brain is the center of the nervous system in all vertebrate and most invertebrate animals—only a few primitive invertebrates such as sponges, jellyfish, sea squirts and starfishes do not have one. It is located in the head, usually close to primary sensory apparatus such as vision, hearing,...
, occupying Brodmann areas 41 and 42. It is the first
corticalThe cerebral cortex is a sheet of neural tissue that is outermost to the cerebrum of the mammalian brain. It plays a key role in memory, attention, perceptual awareness, thought, language, and consciousness. It is constituted of up to six horizontal layers, each of which has a different...
structure to process incoming auditory information. Anatomically, the transverse temporal gyri are distinct in that they run mediolaterally (towards the center of the brain) rather than dorsiventrally (front to back) as all other
temporal lobeThe temporal lobe is a region of the cerebral cortex that is located beneath the Sylvian fissure on both cerebral hemispheres of the mammalian brain....
gyri run.
Active during Auditory processing under fMRI for tone and semantic tasks.
The
Heschl's gyri are named after
Richard L. HeschlRichard Ladislaus Heschl was an Austrian anatomist. In 1849 he received his medical doctorate from the University of Vienna and in 1850 became an assistant to Carl von Rokitansky . Later, he became a professor at Olmütz , Krakow , Graz and Vienna...
.