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Parietal Circuits and Conversion Seizures

Key Words: Seizures, Nonepileptic • Lateralization • Traumatic Events

SIR: We read with great interest the article by Devinsky et al.¹ on the role played by the nondominant hemisphere in conversion nonepileptic seizures. Our group² reported on nondominant parietal lobe dysfunction in hysterical behavior in this journal. We found that recent-onset conversive symptoms were accompanied by hypoperfusion of the nondominant frontoparietal regions as demonstrated by SPECT studies. We hypothesized that these findings reflected a dysfunction in the amygdala parietal lobe circuits based on explicit and affective implicit memories concerning traumatic events, which may result in changes in body image perception and behavior. Devinsky's findings give further credence to the hypothesis that the nondominant hemisphere modulates emotional memories to bodily manifestations.

REFERENCES

1. Devinsky O, Mesad S, Alper K: Nondominant hemispheric lesions and conversion nonepileptic seizures. J Neuropsychiatry Clin Neurosci 2001; 13:367-373[Abstract/Free Full Text]
2. Vardi J, Finkelstein Y, Kesten M, et al: Parietal lobe dysfunction in hysteria-like behavior (abstract). J Neuropsychiatry Clin Neurosci 9; 148-149

Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Email this article to a Colleague Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to My Articles & Searches Download to citation manager Citing Articles via Google Scholar Articles by VARDI, J. Articles by ZLOTOGORSKI, Z. Search for Related Content PubMed Citation Articles by VARDI, J. Articles by ZLOTOGORSKI, Z. Epilepsy Other Neuroanatomy

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