Value signals guiding choices for cannabis versus non-drug rewards in people who use cannabis near-daily.
Rationale : Despite the critical role of choice processes in substance use disorders, the neurobehavioral mechanisms guiding human decisions about drugs remain poorly understood. Objectives: We aimed to characterize the neural encoding of subjective value (SV) for cannabis versus non-drug rewards (s...
| Publicado en: | Psychopharmacology Vol. 242; no. 4; pp. 681 - 692 |
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| Autores principales: | , , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Apr2025
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=183536980&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 183536980 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00333158 EJD jtl: Psychopharmacology issn: 00333158 maglogo: N pubinfo: dt: Apr2025 vid: 242 iid: 4 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 183536980 182899175 10.1007/s00213-025-06746-6 183536980 ppf: 681 ppct: 11 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Value signals guiding choices for cannabis versus non-drug rewards in people who use cannabis near-daily. aug: au: Lawn, Will Hao, Xuejun Konova, Anna B. Haney, Margaret Cooper, Ziva D. Van Dam, Nicholas Glimcher, Paul Bedi, Gillinder affil: https://ror.org/0220mzb33 Department of Psychology, Institute of Psychiatry Psychology and Neuroscience, King's College London, London, UK sug: ab: Rationale : Despite the critical role of choice processes in substance use disorders, the neurobehavioral mechanisms guiding human decisions about drugs remain poorly understood. Objectives: We aimed to characterize the neural encoding of subjective value (SV) for cannabis versus non-drug rewards (snacks) in people who use cannabis on a near-daily/daily frequency (PWUCF) and assessed the impact of cannabis and snack stimuli ('cues') on SV encoding. Methods: Twenty-one non-treatment-seeking PWUCF (≥4 days/week; 1 female) participated in an inpatient, crossover experiment with four counterbalanced conditions: 1. neutral cues/cannabis choices; 2. cannabis cues/cannabis choices; 3. neutral cues/snack choices; and 4. snack cues/snack choices. In each condition, participants were exposed to cues before an fMRI scan during which they repeatedly chose between 0-6 cannabis puffs/snacks and a set monetary amount, with randomly-selected choices implemented. The SV signal was operationalized as the neural correlates of the strength of preference for cannabis/snack choices. fMRI data were analyzed for twenty participants. Results: Despite equivalent choice behavior, SV signals for cannabis, but not snacks, were observed in regions known to encode SV for various rewards (ventromedial prefrontal cortex, vmPFC; ventral striatum; dorsal posterior cingulate cortex, dPCC). SV encoding in vmPFC was stronger for cannabis than snacks. In the dPCC, the impact of cues on SV signals was moderated by reward type. Conclusions: PWUCF had expected neural value encoding for cannabis but disrupted non-drug SV encoding, despite equivalent choice behavior. This provides tentative support for theories that highlight dysregulated neural valuation of non-drug rewards as a hallmark of problematic cannabis use. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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