Which area is deep into the lateral fissure and relates to auditory processing?

The transverse temporal gyrus of Heschl is crucial for auditory processing and is located deep within the lateral fissure (also known as the Sylvian fissure). This area is primarily responsible for receiving auditory information, processing sounds, and is essential for speech perception. It corresponds with the primary auditory cortex, where input from the inner ear is transformed into perceptible sound.

Because it is situated in the lateral sulcus of the brain, the transverse temporal gyrus plays a significant role in how we interpret sounds, including language and other auditory stimuli. This positioning deep in the lateral fissure is particularly important as it emphasizes the anatomical relationship between the auditory pathways and the cortical structures involved in auditory perception.

In contrast, the planum temporale, while also involved in auditory processing, is not as deep in the lateral fissure and is mainly associated with higher-order auditory processing. The lateral geniculate body is primarily involved in visual processing, and the cuneus is associated with visual information processing as well, rather than auditory functions. Hence, the transverse temporal gyrus of Heschl is the key structure related to auditory processing located deep in the lateral fissure.