Auditory apperceptive agnosia are impairments in audition take place despite intact audiogram. In some cases the deficit is in the ability to recognize spoken words and in other cases unable to recognize environmental sounds. In all cases individuals are able to read, write, name objects, and converse intelligently. Similar to visual impairments, the deficit arise because of damage in the temporal lobe. In the case of auditory agnosia bilateral lesions are present in the right temporal gyrus.
In addition to verbal and nonverbal auditory agnosia, there are cases of auditory apperceptive agnosia where patients are unable to recognize music in the absence of sensory, intellectual, and verbal impairments. In these cases there may be a melodic or a memory basis established in the brain and damage to those areas lead to music agnosia. Agnosia occurs because of failure to re-encode melodic information properly. This associated with right-sided lesions interrupting the melodic route in the brain.
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