Which structure comprises the primary auditory cortex?

Which structure comprises the primary auditory cortex?

• A. Occipitotemporal gyri
• B. Transverse Temporal Gyri of Heschel
• C. Precentral gyrus
• D. Parahippocampal gyrus

Answer: (B)

Auditory processing starts in the primary auditory cortex, which sits in the Transverse Temporal Gyri of Heschel in the temporal lobe. These gyri form A1, the first cortical station for sound, organized tonotopically so different frequencies activate specific areas. From there, information moves on to higher auditory areas for more complex analysis. The other regions correspond to different modalities: the occipitotemporal gyri are involved in visual object processing; the precentral gyrus is the primary motor cortex; and the parahippocampal gyrus is tied to memory and spatial navigation. So, the Transverse Temporal Gyri of Heschel are the primary auditory cortex.

Auditory processing starts in the primary auditory cortex, which sits in the Transverse Temporal Gyri of Heschel in the temporal lobe. These gyri form A1, the first cortical station for sound, organized tonotopically so different frequencies activate specific areas. From there, information moves on to higher auditory areas for more complex analysis. The other regions correspond to different modalities: the occipitotemporal gyri are involved in visual object processing; the precentral gyrus is the primary motor cortex; and the parahippocampal gyrus is tied to memory and spatial navigation. So, the Transverse Temporal Gyri of Heschel are the primary auditory cortex.