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Modelle der Substanzabhängigkeit. Neurobiologische und neuropsychologische Modelle der Substanzabhängigkeit


Martin-Soelch, C (2010). Modelle der Substanzabhängigkeit. Neurobiologische und neuropsychologische Modelle der Substanzabhängigkeit. Zeitschrift für Neuropsychologie, 21(3):153-166.

Abstract

Neurobiological models of substance dependence hypothesize that addiction results from interplay between positive and negative reinforcement. Positive reinforcing effects of drugs are mediated through dopamine transmission in the striatum, while negative reinforcement involves the central stress systems. Substance dependence leads to persistent changes in the brain motivational systems. Neuropsychological research showed impairment in decision-making that could be related to a dysfunction in the ventromedial prefrontal cortex. A further critical region is the insula that could be involved in the impaired insight in addictive behaviour and in the mediation of the conscious urge to take the drug. Neurobiological and neuropsychological perspectives are integrated here in a model combining impulsive subcortical and dopamine-related processes with dysfunction of cortical inhibition and cognitive deficits.

Abstract

Neurobiological models of substance dependence hypothesize that addiction results from interplay between positive and negative reinforcement. Positive reinforcing effects of drugs are mediated through dopamine transmission in the striatum, while negative reinforcement involves the central stress systems. Substance dependence leads to persistent changes in the brain motivational systems. Neuropsychological research showed impairment in decision-making that could be related to a dysfunction in the ventromedial prefrontal cortex. A further critical region is the insula that could be involved in the impaired insight in addictive behaviour and in the mediation of the conscious urge to take the drug. Neurobiological and neuropsychological perspectives are integrated here in a model combining impulsive subcortical and dopamine-related processes with dysfunction of cortical inhibition and cognitive deficits.

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Additional indexing

Other titles:Neurobiological and Neuropsychological Perspectives on Substance Dependence
Item Type:Journal Article, refereed, further contribution
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Klinik für Konsiliarpsychiatrie und Psychosomatik
Dewey Decimal Classification:610 Medicine & health
Uncontrolled Keywords:Substanzabhängigkeit; Sucht; Belohnung; Dopamin; Verstärker; Neurobiologie, Neuropsychologie, dependence, addiction, reward, dopamine, reinforcement, neurobiology, neuropsychology
Language:German
Date:September 2010
Deposited On:27 Oct 2010 12:46
Last Modified:07 Dec 2017 03:13
Publisher:Hans Huber
ISSN:1016-264X
Additional Information:Diese Artikelfassung entspricht nicht vollständig dem in der Zeitschrift veröffentlichten Artikel. Dies ist nicht die Originalversion des Artikels und kann daher nicht zur Zitierung herangezogen werden.
Publisher DOI:https://doi.org/10.1024/1016-264X/a000015

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