The team focused on the primary auditory cortex
, which is the first cortical region to receive auditory signals from the ears via other parts of the brain and the nonprimary auditory cortex
, which plays a more sophisticated role in processing those stimuli.
Integration of touch and sound in the auditory cortex
Sensorineural hearing loss occurs from damage to the cochlea or disruption of the transmission of neural impulses from the cochlea to the auditory cortex
There have been studies that showed a certain level of intramodal plasticity in the auditory cortex
, particularly in the tonotopic area of the primary auditory cortex
We demonstrate that the auditory cortex
is more adaptive to womblike maternal sounds than to environmental noise.
Similar to the somatosensory and visual cortices, the auditory cortex
contains a topographical map corresponding to different acoustic frequencies at different cortical locations.
About half of the whole auditory cortex
lit up in dogs when listening to these noises, compared with 3% of the same area in humans.
The primary auditory cortex
is the region of the brain that is responsible for processing of auditory (sound) information.
He said: "It's a possible distress signal from the amygdala to the auditory cortex
And now the team have revealed the interaction between the region of the brain that processes sound, the auditory cortex
, and the amygdala, which is active in the processing of negative emotions when we hear unpleasant sounds.
The neural connections between the inner ear and primary auditory cortex
of the brain are intact in virtually all cases of disabling hearing impairment.
Consequently, the primary auditory cortex
on each side of the brain is sensitive to stimulation through either ear but is more strongly driven by contralateral stimulation.