Release from central auditory competition in the split-brain patient

Frank E. Musiek, Alexander G. Reeves, Jane A. Baran

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


We used dichotic digits (DD), staggered spondaic words (SSW), and frequency patterns (PATT) to study central auditory function before and after two-stage callosotomy. Preoperatively, the patient demonstrated reduced scores bilaterally on all these tests, consistent with documented bilateral hemisphere lesions. After the first operation (sectioning the posterior half of the corpus callosum), the dichotic tests (DD and SSW) revealed the expected decrease in left-ear scores, but there was improvement on the right, perhaps because there was release from central auditory competition. Our findings also suggest that the “auditory” portion of the corpus callosum may be in the posterior half of this structure.

Original languageEnglish (US)
Pages (from-to)983-987
Number of pages5
Issue number7
StatePublished - Jul 1985

ASJC Scopus subject areas

  • Clinical Neurology


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