Question

Parents took their 1 year old son to the doctor because they believed him to deaf. Examination proved that his hearing was normal. The parents explained to the doctor that he does not respond to any loud noise that occurs right behind him. Further examination showed a lesion in the _______________.

A. inferior colliculi
B. Pulvinar nuclei
C. Suprachiasmatic nucleus
D. amygdaloid body
E. none of the above

Answer 1

The correct answer is A. inferior colliculi. The inferior colliculi are a pair of bumps in the midbrain that play a crucial role in auditory processing. The correct option is (A).

Step-by-step explanation:

The correct answer is A. inferior colliculi.

The inferior colliculi are a pair of bumps in the midbrain that play a crucial role in auditory processing. They receive information from the cochlear nuclei and send it to the thalamus and the auditory cortex in the temporal lobe of the cerebral cortex.

Lesions in the inferior colliculi can lead to hearing difficulties or lack of response to sounds, as seen in the case of the 1 year old child in the question.