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Alexithymia and the split brain. I. Lexical-level content analysis.

W D TenHouten, K D Hoppe, J E Bogen

    Psychotherapy and Psychosomatics
    |January 1, 1985
    PubMed
    Summary
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    Patients with cerebral commissurotomy, a brain surgery, showed distinct language patterns compared to controls. They used fewer emotional words and more incomplete sentences, suggesting alexithymia characteristics.

    Area of Science:

    • Neuroscience
    • Psycholinguistics
    • Cognitive Psychology

    Background:

    • Cerebral commissurotomy severs the connection between brain hemispheres.
    • Understanding the impact of such surgery on emotional processing and language is crucial.

    Purpose of the Study:

    • To investigate the linguistic and emotional expression differences in patients who underwent cerebral commissurotomy compared to healthy controls.
    • To explore potential correlations between cerebral commissurotomy and alexithymia.

    Main Methods:

    • Eight patients with cerebral commissurotomy and eight matched controls watched a symbolic film depicting death.
    • Subjects' spoken and written responses to the film's content were analyzed lexically.
    • Linguistic variables included affect-laden words, sentence completeness, auxiliary verb usage, and adjective usage.

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    Main Results:

    • Commissurotomy patients used a lower percentage of affect-laden words.
    • Patients exhibited a higher percentage of incomplete sentences and auxiliary verbs.
    • A lower percentage of adjectives was observed in the commissurotomy group.
    • These linguistic patterns positioned commissurotomy patients closer to the alexithymic spectrum.

    Conclusions:

    • Cerebral commissurotomy is associated with distinct linguistic markers suggestive of alexithymia.
    • Hemispheric disconnection may impact the expression of emotional content through language.
    • Further research is warranted to elucidate the neurobiological underpinnings of these findings.