Psychoanalysis, hemispheric specialization, and creativity.
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Biomedical subjects
Publications and source records attributed to K D Hoppe.
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8 commissurotomy patients and 8 precision-matched normal control subjects were shown a 3-min videotaped film about death. Content analysis of the subjects' spoken and written responses to this film was carried out on the global, interpretive level, for 2 fantasy and 4 symbolization variables. Commissurotomy patients were found to be significantly more alexithymic than normal controls for 3 of the symbolization variables, for factor-analytic measures of fantasy and symbolization, and for an over-all measure of alexithymia derived from these 2 factors and lexical-level and sentential-level measures of alexithymia.
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Modern neuro- and psychophysiological findings on commissurotomized ("split-brain") patients seem to confirm psychoanalytic theories. Twelve commissurotomized patients and one patient who had a right hemispherectomy showed an impoverishment of dreams, fantasies and symbolization. This might have been due to an interruption of the preconscious stream between the two hemispheres, which causes a separation of word-presentations from thing-presentations, as well as to a predominance of a feedback-free primary process in the right hemisphere. The similarity in operational thinking of psychosomatic and split-brain patients leads the author to hypothesize a "functional commissurotomy" in cases of severe psychosomatic disturbances.
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