The Cognitive Neuropsychology of Schizophrenia
Psychology Press, 1992 - 169 pagine
Schizophrenic patients have bizarre experiences which reflect a disorder in the contents of consciousness. For example, patients hear voices talking about them or they are convinced that alien forces are controlling their actions. Their abnormal behaviour includes incoherence and lack of will. In this book an explanation of these baffling signs and symptoms is provided using the framework of cognitive neuropsychology.
The cognitive abnormalities that underlie these signs and symptoms suggest impairment in a system which constructs and monitors representations of certain abstract (especially mental) events in consciousness. For example, schizophrenic patients can no longer construct representations of their intentions to act. Thus, if actions occur, these will be experienced as coming out of the blue and hence can seem alien. The patient who lacks awareness of his own intentions will stop acting spontaneously and hence will show a lack of will.
The psychological processes that are abnormal in schizophrenia can be related to underlying brain systems using evidence from human and animal neuropsychology. Interactions between prefrontal cortex and other parts of the brain, especially temporal cortex appear critical for constructing the contents of consciousness. It is these interactions that are likely to be impaired in schizophrenia.
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ability abnormal experiences amphetamine animals anterior cingulate cortex associated with schizophrenia auditory hallucinations autism awareness basal ganglia behavioural abnormalities believe brain abnormalities brain systems British Journal Chapter cingulate cortex cognitive abnormalities cognitive neuropsychology cognitive processes corollary discharge defects delusions of control delusions of reference described diagnosis effects evidence experimental external features of schizophrenia flattening of affect Frith frontal lobe function goals hallucinations Hemsley inappropriate incoherence inferences intentions Johnstone Journal of Psychiatry language latent inhibition mechanism mental mentalise metarepresentation modules monkey movements negative features negative signs negative symptoms neurological patients normal observed Parkinson's disease perception performance positive symptoms poverty of action poverty of speech prefrontal cortex problem Psychiatry psychological psychotic representation response schizophrenic language schizophrenic patients schizophrenic speech schizophrenic symptoms self-monitoring Shallice signs and symptoms social withdrawal stereotyped behaviour stimulus stimulus-driven studies suggested supplementary motor area symptoms of schizophrenia syndrome task theory thought insertion underlying ventricles words
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Pagina 140 - Differential performance of acute and chronic schizophrenics in a latent inhibition task.
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