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Letter   |    
Parietal Circuits and Conversion Seizures
Jacob Vardi, M.D.; Yoram Finkelstein, M.D., Ph.D.; Zoli Zlotogorski, Ph.D.
The Journal of Neuropsychiatry and Clinical Neurosciences 2002;14:468-468. doi:10.1176/appi.neuropsych.14.4.468
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Seizures, NonepilepticLateralizationTraumatic 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.

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

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