Neural correlates of instrumental responding in the context of alcohol-related cues index disorder severity and relapse risk
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
The influence of Pavlovian conditioned stimuli on ongoing behavior may contribute to explaining how alcohol cues stimulate drug seeking and intake. Using a Pavlovian-instrumental transfer task, we investigated the effects of alcohol-related cues on approach behavior (i.e., instrumental response behavior) and its neural correlates, and related both to the relapse after detoxification in alcohol-dependent patients. Thirty-one recently detoxified alcohol-dependent patients and 24 healthy controls underwent instrumental training, where approach or non-approach towards initially neutral stimuli was reinforced by monetary incentives. Approach behavior was tested during extinction with either alcohol-related or neutral stimuli (as Pavlovian cues) presented in the background during functional magnetic resonance imaging (fMRI). Patients were subsequently followed up for 6 months. We observed that alcohol-related background stimuli inhibited the approach behavior in detoxified alcohol-dependent patients (t = - 3.86, p < .001), but not in healthy controls (t = - 0.92, p = .36). This behavioral inhibition was associated with neural activation in the nucleus accumbens (NAcc) (t(30) = 2.06, p < .05). Interestingly, both the effects were only present in subsequent abstainers, but not relapsers and in those with mild but not severe dependence. Our data show that alcohol-related cues can acquire inhibitory behavioral features typical of aversive stimuli despite being accompanied by a stronger NAcc activation, suggesting salience attribution. The fact that these findings are restricted to abstinence and milder illness suggests that they may be potential resilience factors.Clinical trial: LeAD study, http://www.lead-studie.de , NCT01679145.
Details
Originalsprache | Englisch |
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Seiten (von - bis) | 295-308 |
Seitenumfang | 14 |
Fachzeitschrift | European archives of psychiatry and clinical neuroscience |
Jahrgang | 269 |
Ausgabenummer | 3 |
Publikationsstatus | Veröffentlicht - Apr. 2019 |
Peer-Review-Status | Ja |
Externe IDs
Scopus | 85058698375 |
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ORCID | /0000-0002-3188-8431/work/142251769 |
ORCID | /0000-0001-5398-5569/work/150329456 |
Schlagworte
Ziele für nachhaltige Entwicklung
Schlagwörter
- Adult, Alcoholism/diagnostic imaging, Conditioning, Classical/physiology, Conditioning, Operant/physiology, Cues, Female, Follow-Up Studies, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Nucleus Accumbens/diagnostic imaging, Recurrence, Risk, Severity of Illness Index, Transfer, Psychology/physiology