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Nobis L, Maio MR, Saleh Y, Manohar S, Kienast A, McGann E, Husain M. Role of serotonin in modulation of decision-making in Parkinson's disease. J Psychopharmacol 2023; 37:420-431. [PMID: 36628992 PMCID: PMC10101180 DOI: 10.1177/02698811221144636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND Dysfunction of dopaminergic pathways has been considered to play a pivotal role in Parkinson's disease (PD), affecting the processing of emotional and rewarding information, and potentially leading to symptoms of depression or apathy. However, some aspects of motivation in PD might be affected by non-dopaminergic mechanisms. AIM AND METHOD The objective of this experimental medicine study was to investigate the contribution of serotonergic modulation via administration of citalopram (20 mg) for 7 days on motivated decision-making in twenty PD patients, measured using several different computerised tasks and clinical questionnaires that probe different aspects of decision-making. Twenty healthy controls were additionally tested without medication to assess any baseline differences between the two groups. RESULTS Results indicated that PD patients were overall less motivated than controls on an effort- and reward-based decision-making task. Citalopram increased or decreased willingness to exert effort for reward, depending on whether baseline motivation was high or low, respectively. A task assessing decision-making under risk revealed higher levels of risk aversion for potential losses in PD patients, which neither serotonin nor the patient's regular dopaminergic medication seemed to restore. However, citalopram in PD was associated with more risk-seeking choices for gains, although patients and controls did not differ on this at baseline. CONCLUSION The results provide evidence for a role of the serotonergic system in influencing some aspects of motivated decision-making in PD processes.
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Affiliation(s)
- Lisa Nobis
- Oxford Centre for Human Brain Activity, Wellcome Centre for Integrative Neuroimaging, Department of Psychiatry, University of Oxford, Oxford, UK
| | - Maria Raquel Maio
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Youssuf Saleh
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Sanjay Manohar
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK.,Department of Experimental Psychology, University of Oxford, Oxford, UK
| | - Annika Kienast
- Department of Experimental Psychology, University of Oxford, Oxford, UK
| | - Emily McGann
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Masud Husain
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK.,Department of Experimental Psychology, University of Oxford, Oxford, UK
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Limbrick-Oldfield EH, Cherkasova MV, Kennedy D, Goshko CB, Griffin D, Barton JJ, Clark L. Gambling disorder is associated with reduced sensitivity to expected value during risky choice. J Behav Addict 2020; 9:1044-1055. [PMID: 33275122 PMCID: PMC8969736 DOI: 10.1556/2006.2020.00088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 10/20/2020] [Accepted: 10/25/2020] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND AND AIMS Individuals with gambling disorder display increased levels of risk-taking, but it is not known if it is associated with an altered subjective valuation of gains and/or losses, perception of their probabilities, or integration of these sources of information into expected value. METHODS Participants with gambling disorder (n = 48) were compared with a healthy comparison group (n = 35) on a two-choice lottery task that involved either gains-only or losses-only gambles. On each trial, two lotteries were displayed, showing the associated probability and magnitude of the possible outcome for each. On each trial, participants chose one of the two lotteries, and the outcome was revealed. RESULTS Choice behaviour was highly sensitive to the expected value of the two gambles in both the gain and loss domains. This sensitivity to expected value was attenuated in the group with gambling disorder. The group with gambling disorder used both probability and magnitude information less, and this impairment was greater for probability information. By contrast, they used prior feedback (win vs loss) to inform their next choice, despite the independence of each trial. Within the gambling disorder group, problem gambling severity and trait gambling-related cognitions independently predicted reduced sensitivity to expected value. The majority of observed effects were consistent across both gain and loss domains. DISCUSSION AND CONCLUSIONS Our results provide a thorough characterization of decision processes in gain and loss domains in gambling disorder, and place these problems in the context of theoretical constructs from behavioural economics.
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Affiliation(s)
- Eve H. Limbrick-Oldfield
- Department of Psychology, Centre for Gambling Research at UBC, University of British Columbia
,
Vancouver
,
Canada,
Corresponding author.
| | - Mariya V. Cherkasova
- Department of Psychology, Centre for Gambling Research at UBC, University of British Columbia
,
Vancouver
,
Canada,Department of Medicine, Division of Neurology, University of British Columbia
,
Vancouver
,
Canada,Department of Psychology, West Virginia University
,
Morgantown, WV
,
USA
| | - Dawn Kennedy
- Department of Psychology, Centre for Gambling Research at UBC, University of British Columbia
,
Vancouver
,
Canada
| | - Caylee-Britt Goshko
- Department of Psychology, Centre for Gambling Research at UBC, University of British Columbia
,
Vancouver
,
Canada
| | - Dale Griffin
- Marketing and Behavioural Science Division, UBC Sauder School of Business, University of British Columbia
,
Vancouver
,
Canada
| | - Jason J.S. Barton
- Department of Medicine, Division of Neurology, University of British Columbia
,
Vancouver
,
Canada,Department of Ophthalmology, University of British Columbia
,
Vancouver
,
Canada
| | - Luke Clark
- Department of Psychology, Centre for Gambling Research at UBC, University of British Columbia
,
Vancouver
,
Canada,Djavad Mowafaghian Centre for Brain Health, University of British Columbia
,
Vancouver
,
Canada
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Cherkasova MV, Corrow JC, Taylor A, Yeung SC, Stubbs JL, McKeown MJ, Appel-Cresswell S, Stoessl AJ, Barton JJS. Dopamine replacement remediates risk aversion in Parkinson's disease in a value-independent manner. Parkinsonism Relat Disord 2019; 66:189-194. [PMID: 31473085 DOI: 10.1016/j.parkreldis.2019.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/15/2019] [Accepted: 08/26/2019] [Indexed: 10/26/2022]
Abstract
INTRODUCTION Clinical evidence suggests that Parkinson's Disease (PD) patients are risk averse. Dopaminergic therapy has been reported to increase risk tolerance, but the underlying mechanisms are unclear. Some studies have suggested an amplification of subjective reward value, consistent with the role of dopamine in reward value coding. Others have reported value-independent risk enhancement. We evaluated the value-dependence of the effects of PD and its therapy on risk using tasks designed to sensitively measure risk over a wide range of expected values. METHOD 36 patients with idiopathic PD receiving levodopa monotherapy and 36 healthy matched controls performed two behavioural economic tasks aimed at quantifying 1) risk tolerance/aversion in the gain frame and 2) valuation of potential gains relative to losses. PD patients performed the tasks on and off their usual dose of levodopa in randomized order; controls performed the same tasks twice. RESULTS Relative to the controls, unmedicated PD patients showed significant value-independent risk aversion in the gain frame, which was normalized by levodopa. PD patients did not differ from controls in their valuation of gains relative to losses. However, across both tasks and regardless of medication, choices of the patients were more determined by expected values of the prospects than those of controls. CONCLUSION Dopamine deficiency in PD was associated with risk aversion, and levodopa promoted riskier choice in a value-independent manner. PD patients also showed an increased sensitivity to expected value, which was independent of levodopa and does not appear to result directly from dopamine deficiency.
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Affiliation(s)
- Mariya V Cherkasova
- Department of Psychology, University of British Columbia, Vancouver, Canada.
| | - Jeffrey C Corrow
- Human Vision and Eye Movement Laboratory, Departments of Medicine (Neurology), Ophthalmology and Visual Science, University of British Columbia, Vancouver, Canada
| | - Alisdair Taylor
- Human Vision and Eye Movement Laboratory, Departments of Medicine (Neurology), Ophthalmology and Visual Science, University of British Columbia, Vancouver, Canada
| | - Shanna C Yeung
- Human Vision and Eye Movement Laboratory, Departments of Medicine (Neurology), Ophthalmology and Visual Science, University of British Columbia, Vancouver, Canada
| | - Jacob L Stubbs
- Human Vision and Eye Movement Laboratory, Departments of Medicine (Neurology), Ophthalmology and Visual Science, University of British Columbia, Vancouver, Canada
| | - Martin J McKeown
- Department of Medicine (Neurology), University of British Columbia, Vancouver, Canada; Pacific Parkinson's Research Centre, University of British Columbia, Vancouver, Canada
| | - Silke Appel-Cresswell
- Department of Medicine (Neurology), University of British Columbia, Vancouver, Canada; Pacific Parkinson's Research Centre, University of British Columbia, Vancouver, Canada
| | - A Jon Stoessl
- Department of Medicine (Neurology), University of British Columbia, Vancouver, Canada; Pacific Parkinson's Research Centre, University of British Columbia, Vancouver, Canada
| | - Jason J S Barton
- Human Vision and Eye Movement Laboratory, Departments of Medicine (Neurology), Ophthalmology and Visual Science, University of British Columbia, Vancouver, Canada
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Cherkasova MV, Clark L, Barton JJS, Schulzer M, Shafiee M, Kingstone A, Stoessl AJ, Winstanley CA. Win-Concurrent Sensory Cues Can Promote Riskier Choice. J Neurosci 2018; 38:10362-10370. [PMID: 30373765 PMCID: PMC6596211 DOI: 10.1523/jneurosci.1171-18.2018] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 09/13/2018] [Accepted: 10/15/2018] [Indexed: 11/21/2022] Open
Abstract
Reward-related stimuli can potently influence behavior; for example, exposure to drug-paired cues can trigger drug use and relapse in people with addictions. Psychological mechanisms that generate such outcomes likely include cue-induced cravings and attentional biases. Recent animal data suggest another candidate mechanism: reward-paired cues can enhance risky decision making, yet whether this translates to humans is unknown. Here, we examined whether sensory reward-paired cues alter decision making under uncertainty and risk, as measured respectively by the Iowa Gambling Task and a two-choice lottery task. In the cued versions of both tasks, gain feedback was augmented with reward-concurrent audiovisual stimuli. Healthy human volunteers (53 males, 78 females) performed each task once, one with and the other without cues (cued Iowa Gambling Task/uncued Vancouver Gambling Task: n = 63; uncued Iowa Gambling Task/cued Vancouver Gambling Task: n = 68), with concurrent eye-tracking. Reward-paired cues did not affect choice on the Iowa Gambling Task. On the two-choice lottery task, the cued group displayed riskier choice and reduced sensitivity to probability information. The cued condition was associated with reduced eye fixations on probability information shown on the screen and greater pupil dilation related to decision and reward anticipation. This pupil effect was unrelated to the risk-promoting effects of cues: the degree of pupil dilation for risky versus risk-averse choices did not differ as a function of cues. Together, our data show that sensory reward cues can promote riskier decisions and have additional and distinct effects on arousal.SIGNIFICANCE STATEMENT Animal data suggest that reward-paired cues can promote maladaptive reward-seeking by biasing cost-benefit decision making. Whether this finding translates to humans is unknown. We examined the effects of salient reward-paired audiovisual cues on decision making under risk and uncertainty in human volunteers. Cues had risk-promoting effects on a risky choice task and independently increased task-related arousal as measured by pupil dilation. By demonstrating risk-promoting effects of cues in human participants, our data identify a mechanism whereby cue reactivity could translate into maladaptive behavioral outcomes in people with addictions.
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Affiliation(s)
| | | | - Jason J S Barton
- Department of Ophthalmology, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
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Kjær SW, Damholdt MF, Callesen MB. A systematic review of decision-making impairments in Parkinson’s Disease: Dopaminergic medication and methodological variability. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.baga.2018.07.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Grall-Bronnec M, Victorri-Vigneau C, Donnio Y, Leboucher J, Rousselet M, Thiabaud E, Zreika N, Derkinderen P, Challet-Bouju G. Dopamine Agonists and Impulse Control Disorders: A Complex Association. Drug Saf 2018; 41:19-75. [PMID: 28861870 PMCID: PMC5762774 DOI: 10.1007/s40264-017-0590-6] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Impulse control disorders (ICDs) are a well-known adverse effect of dopamine agonists (DAAs). This critical review aims to summarize data on the prevalence and factors associated with the development of an ICD simultaneous to DAA use. A search of two electronic databases was completed from inception to July 2017. The search terms were medical subject headings (MeSH) terms including “dopamine agonists” AND “disruptive disorders”, “impulse control disorders”, or “conduct disorders”. Articles had to fulfill the following criteria to be included: (i) the target problem was an ICD; (ii) the medication was a dopaminergic drug; and (iii) the article was an original article. Of the potential 584 articles, 90 met the criteria for inclusion. DAAs were used in Parkinson’s disease (PD), restless legs syndrome (RLS) or prolactinoma. The prevalence of ICDs ranged from 2.6 to 34.8% in PD patients, reaching higher rates in specific PD populations; a lower prevalence was found in RLS patients. We found only two studies about prolactinoma. The most robust findings relative to the factors associated with the development of an ICD included the type of DAA, the dosage, male gender, a younger age, a history of psychiatric symptoms, an earlier onset of disease, a longer disease duration, and motor complications in PD. This review suggests that DAA use is associated with an increased risk in the occurrence of an ICD, under the combined influence of various factors. Guidelines to help prevent and to treat ICDs when required do exist, although further studies are required to better identify patients with a predisposition.
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Affiliation(s)
- Marie Grall-Bronnec
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France.
- Université de Nantes, Université de Tours, Inserm U1246, Nantes, France.
| | - Caroline Victorri-Vigneau
- Université de Nantes, Université de Tours, Inserm U1246, Nantes, France
- Department of Pharmacology, CHU Nantes, Center for Evaluation and Information on Pharmacodependence, Nantes, France
| | - Yann Donnio
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
| | - Juliette Leboucher
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
| | - Morgane Rousselet
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
- Université de Nantes, Université de Tours, Inserm U1246, Nantes, France
| | - Elsa Thiabaud
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
| | - Nicolas Zreika
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
| | - Pascal Derkinderen
- Department of Neurology, CHU Nantes, Nantes, France
- Université de Nantes, Inserm U913, Nantes, France
| | - Gaëlle Challet-Bouju
- Clinical Investigation Unit "Behavioral Addictions/Complex Affective Disorders", Addictology and Psychiatry Department, CHU Nantes, Hospital Saint Jacques, 85, rue Saint Jacques, 44093, Nantes Cedex 1, France
- Université de Nantes, Université de Tours, Inserm U1246, Nantes, France
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Orbitofrontal or accumbens dopamine depletion does not affect risk-based decision making in rats. COGNITIVE AFFECTIVE & BEHAVIORAL NEUROSCIENCE 2015; 15:507-22. [DOI: 10.3758/s13415-015-0353-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Xi C, Zhu Y, Mu Y, Chen B, Dong B, Cheng H, Hu P, Zhu C, Wang K. Theory of mind and decision-making processes are impaired in Parkinson's disease. Behav Brain Res 2015; 279:226-33. [DOI: 10.1016/j.bbr.2014.11.035] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 11/16/2014] [Accepted: 11/20/2014] [Indexed: 11/26/2022]
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