David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Jack Alan Reynolds
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Behavioral and Brain Sciences 26 (1):65-82 (2003)
The concept of locally specialized functions dominates research on higher brain function and its disorders. Locally specialized functions must be complemented by processes that coordinate those functions, however, and impairment of coordinating processes may be central to some psychotic conditions. Evidence for processes that coordinate activity is provided by neurobiological and psychological studies of contextual disambiguation and dynamic grouping. Mechanisms by which this important class of cognitive functions could be achieved include those long-range connections within and between cortical regions that activate synaptic channels via NMDA-receptors, and which control gain through their voltage-dependent mode of operation. An impairment of these mechanisms is central to PCP-psychosis, and the cognitive capabilities that they could provide are impaired in some forms of schizophrenia. We conclude that impaired cognitive coordination due to reduced ion flow through NMDA-channels is involved in schizophrenia, and we suggest that it may also be involved in other disorders. This perspective suggests several ways in which further research could enhance our understanding of cognitive coordination, its neural basis, and its relevance to psychopathology. Key Words: attention; cerebral cortex; cognitive coordination; cognitive neuropsychiatry; cognitive neuropsychology; context disorganization; Gamma rhythms; Gestalt theory; glutamate; grouping; memory; NMDA-receptors; PCP-psychosis; perceptual organization; schizophrenia.
|Keywords||attention cerebral cortex cognitive coordination cognitive neuropsychiatry cognitive neuropsychology context disorganization Gamma rhythms Gestalt theory glutamate grouping memory NMDA-receptors PCP-psychosis perceptual organization schizophrenia|
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Citations of this work BETA
Elisabeth Pacherie & Jean-Remy Martin (2013). Out of Nowhere: Thought Insertion, Ownership and Context-Integration. Consciousness and Cognition 22 (1):111-122.
Jean-Rémy Martin & Elisabeth Pacherie (2013). Out of Nowhere: Thought Insertion, Ownership and Context-Integration. Consciousness and Cognition 22 (1):111-122.
James Goss (2011). Poetics in Schizophrenic Language: Speech, Gesture and Biosemiotics. Biosemiotics 4 (3):291-307.
Louis Sass, Elizabeth Pienkos & Barnaby Nelson (2013). IntrospectionIntrospection and Schizophrenia: A Comparative Investigation of Anomalous Self Experiences. Consciousness and Cognition 22 (3):853-867.
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