What are the core regions of auditory cortex?

What are the core regions of auditory cortex?

The modern divisions of the auditory cortex are the core (which includes primary auditory cortex, A1), the belt (secondary auditory cortex, A2), and the parabelt (tertiary auditory cortex, A3). The belt is the area immediately surrounding the core; the parabelt is adjacent to the lateral side of the belt.

What is an auditory cortex?

The auditory cortex primarily receives auditory information from a nucleus in the thalamus called the medial geniculate nucleus, which is where all incoming information about hearing is sent before it is processed by the cerebral cortex.

Where is the auditory cortex?

temporal lobe
The primary auditory cortex (A1) is located on the superior temporal gyrus in the temporal lobe and receives point-to-point input from the ventral division of the medial geniculate complex; thus, it contains a precise tonotopic map.

How is the auditory cortex organized?

The primary auditory cortex is organized in vertical columns with the cells in each column sensitive to the same main sound frequency. Adjacent columns are organized according to the tonotopic representation (from lower frequency to higher frequency moving from posterior to anterior).

What is the auditory cortex responsible for?

The auditory cortex is therefore an integral part of the network of brain regions responsible for generating meaning from sounds, auditory perceptual decision-making, and learning. In this review, we focus on three key areas of auditory cortical processing where there has been progress in the last few years.

What happens in the auditory cortex?

The auditory cortex plays a critical role in our ability to perceive sound. The auditory cortex is also thought to be involved in higher-level auditory processing, such as recognizing aspects of sound that are specific to speech. Damage to the auditory cortex can disrupt various facets of auditory perception.

What part of your brain is responsible for hearing?

auditory cortex
The auditory cortex is found in the temporal lobe. Most of it is hidden from view, buried deep within a fissure called the lateral sulcus. Some auditory cortex is visible on the external surface the brain, however, as it extends to a gyrus called the superior temporal gyrus.

What happens when your auditory cortex is damaged?

Damage to this portion of auditory association cortex impairs both the recognition of real sounds as well as the processing of everyday concepts for which sound features are highly important, such as “telephone” or “bell”.

What does each side of the brain control?

Each hemisphere controls the opposite side of the body. In general, the left hemisphere controls speech, comprehension, arithmetic, and writing. The right hemisphere controls creativity, spatial ability, artistic, and musical skills. The left hemisphere is dominant in hand use and language in about 92% of people.