Dichotic Listening is a procedure used commonly in investigating selective attention in the auditory domain. Two messages are presented to both the left and right ears (1 message to each ear), normally using a set of headphones. Normally participants are asked to pay attention to either one, or both (divided attention condition) of the messages and may later be asked about the content of both. In a selective attention task, the participant may be asked to repeat out-loud the content of the attended message; a process known as shadowing.
Dichoticlistening in patients with splenial and nonsplenial callosal lesions
The authors found splenial lesions to be associated with left ear suppression in dichoticlistening of consonant-vowel syllables.
This was found in both a rapid presentation dichotic monitoring task and a standard dichoticlistening task, ruling out attentional limitations in the processing of high stimulus loads as a confounding factor.
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