Interhemispheric transfer deficit and alexithymia

S. B. Zeitlin, R. D.S. Lane, D. O'Leary, M. J. Schrift

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Abstract

The hypothesis that alexithymia reflects a functional disconnection between the two cerebral hemispheres was examined in 25 male combat veterans with posttraumatic stress disorder (PTSD). Multiple regression analysis revealed that the efficiency of interhemispheric communication, evaluated with a tactile finger localization task, was a significant predictor of the degree of alexithymia, as measured by the Toronto Alexithymia Scale, independent of PTSD severity and IQ. The PTSD subjects without alexithymia did not differ on the finger localization task from 10 male control subjects without alexithymia. These data suggest that at least some forms of alexithymia may be mediated by an interhemispheric communication deficit.

Original languageEnglish (US)
Pages (from-to)1434-1439
Number of pages6
JournalAmerican Journal of Psychiatry
Volume146
Issue number11
DOIs
StatePublished - Jan 1 1989
Externally publishedYes

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ASJC Scopus subject areas

  • Psychiatry and Mental health

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