Cognitive interaction after staged callosal section: evidence for transfer of semantic activation

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Science  17 Apr 1981:
Vol. 212, Issue 4492, pp. 344-346
DOI: 10.1126/science.6782673


Sensory and cognitive functions were assessed in a right-handed male before and after partial and complete callosal commissurotomy. After the initial posterior section was made, there was no evidence of interhemispheric sensory transfer, although the left hemisphere did have access to stimulus-related semantic and episodic information from the right hemisphere. After the callosum was completely sectioned, this exchange was no longer observed.