Dichotic listening task refers to an experimental procedure in which a person wears earphones that present different words to the two (2) ears at the same time and the person tries to say either or both words; an experimental task in which two (2) different auditory stimuli are simultaneously presented to the two (2) ears. The purpose of this task is to infer which cerebral hemisphere is responsible for processing the stimuli on the basis of which stimulus the listener perceives.