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Abstract
Using a newly developed system of brain electrical activity mapping (Alvar Electronics,
Paris), we studied 10 right-handed, schizophrenic subjects who had been treated with
neuroleptics (5 of the disordered and 5 of the paranoid type) and compared them with
10 controls by applying a cortical activation schedule involving a multisensorimotor
coordination task. All tasks were referenced to resting states after a specially designed
relaxation program. In schizophrenics, we found high, predominantly bifrontal, delta
and theta power values, which is in agreement with the literature, and low beta power
values, which are possibly due to the neuroleptic treatment. The major result, however,
was a widespread left hemisphere dysfunction during multisensorimotor activation,
with a predominance over the primary sensory and motor cortical areas. The area of
the supplementary motor regions was not affected. Combined with the evidence of genetic
and psychometric studies, our results lend further support to the hypothesis that
left hemisphere functioning in schizophrenia is impaired. They also suggest that there
is a special and independent sensory and motor processing system impairment in schizophrenia.
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Article info
Publication history
Received in revised form:
September 25,
1984
Received:
July 9,
1984
Footnotes
☆This paper received Honorable Mention in the 1984 A. E. Bennett Award Competition.
☆☆The work was supported in part by the Deutsche Forschungsgemeinschaft (DFG Gu 207/1-1), D-53 Bonn, FRG. In honor of Professor Pierre Rondot.
Identification
Copyright
© 1985 Published by Elsevier Inc.