How dischotic listening work

Dichotic listening. In a test of dichotic listening, the patient hears two different words or sentences presented simultaneously to the left and right ears ... When the patient is asked to ignore one ear and repeat what is presented to the other ear, the task involves the segregation of competing binaural input.

Dichotic listening is a psychological test commonly used to investigate selective attention and the lateralization of brain function within the auditory system. It is used within the fields of cognitive psychology and neuroscience.

Explanation:

so, In a test of dichotic listening, the patient hears two different words or sentences presented simultaneously to the left and right ears ... When the patient is asked to ignore one ear and repeat what is presented to the other ear, the task involves the segregation of competing binaural input.