PSYCHONEUROLOGICAL PROBLEMS RELATED TO THE SURGICAL TRANSSECTION OF THE PREFRONTAL ASSOCIATION AREAS IN MAN

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Abstract
The facts and theories regarding the neurological relations underlying the behavioral changes occurring after frontal lobotomy are discussed. On the basis of exptl. work, the author concludes that "the principal neural tracts affected by bilateral prefrontal lobotomy are those making up the corticothalamic system, particularly the anterior thalamic peduncle.....Despite the fact that other tracts do not appear to be structurally affected by the lobotomy, the facts of brain organization point to the possibility of functional repatterning mediated through frontal integrations with other cerebral, subcerebral and spinal centers." It is suggested that the behavioral changes accompanying lobotomy are due to "the disruption of the neural chain consisting of the prefrontal association areas; the thalamus and the cerebello-pontine centers." Bibliography of 47 titles.

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