Lopez Mabel, Kosson David S, Weissman Daniel H, Banich Marie T
Department of Psychology, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA.
Neuropsychology. 2007 Jan;21(1):82-93. doi: 10.1037/0894-4105.21.1.82.
The goal of the present study was to determine whether a reduced capacity for interhemispheric integration can explain the attention deficits seen in psychopathic individuals under conditions that place substantial demands on left-hemisphere-specific resources. The present study examined the performance of 54 incarcerated psychopathic and nonpsychopathic male offenders on a same-different global-local paradigm that permits manipulation of both the magnitude of processing demands and the demand for interhemispheric coordination. Prior studies with similar paradigms have demonstrated that the cerebral hemispheres can function more efficiently as relatively independent processors on simple tasks, whereas communication between the hemispheres improves performance when processing demands are heavy. Analyses indicated that psychopathic offenders are not deficient in interhemispheric integration but provided additional evidence consistent with the left hemisphere activation hypothesis of psychopathy.
本研究的目的是确定在对左半球特定资源有大量需求的条件下，半球间整合能力的降低是否可以解释在精神病态个体中观察到的注意力缺陷。本研究考察了54名被监禁的精神病态和非精神病态男性罪犯在异同全局-局部范式上的表现，该范式允许对加工需求的大小和半球间协调需求进行操纵。先前使用类似范式的研究表明，在简单任务中，大脑半球作为相对独立的处理器可以更有效地发挥作用，而当加工需求较大时，半球间的交流可以提高表现。分析表明，精神病态罪犯在半球间整合方面并不存在缺陷，但提供了与精神病态的左半球激活假说相一致的额外证据。
