1
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Batten SR, Bang D, Kopell BH, Davis AN, Heflin M, Fu Q, Perl O, Ziafat K, Hashemi A, Saez I, Barbosa LS, Twomey T, Lohrenz T, White JP, Dayan P, Charney AW, Figee M, Mayberg HS, Kishida KT, Gu X, Montague PR. Dopamine and serotonin in human substantia nigra track social context and value signals during economic exchange. Nat Hum Behav 2024; 8:718-728. [PMID: 38409356 PMCID: PMC11045309 DOI: 10.1038/s41562-024-01831-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 01/16/2024] [Indexed: 02/28/2024]
Abstract
Dopamine and serotonin are hypothesized to guide social behaviours. In humans, however, we have not yet been able to study neuromodulator dynamics as social interaction unfolds. Here, we obtained subsecond estimates of dopamine and serotonin from human substantia nigra pars reticulata during the ultimatum game. Participants, who were patients with Parkinson's disease undergoing awake brain surgery, had to accept or reject monetary offers of varying fairness from human and computer players. They rejected more offers in the human than the computer condition, an effect of social context associated with higher overall levels of dopamine but not serotonin. Regardless of the social context, relative changes in dopamine tracked trial-by-trial changes in offer value-akin to reward prediction errors-whereas serotonin tracked the current offer value. These results show that dopamine and serotonin fluctuations in one of the basal ganglia's main output structures reflect distinct social context and value signals.
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Affiliation(s)
- Seth R Batten
- Fralin Biomedical Research Institute at VTC, Virginia Tech, Roanoke, VA, USA.
| | - Dan Bang
- Fralin Biomedical Research Institute at VTC, Virginia Tech, Roanoke, VA, USA.
- Center of Functionally Integrative Neuroscience, Aarhus University, Aarhus, Denmark.
- Wellcome Centre for Human Neuroimaging, University College London, London, UK.
- Department of Experimental Psychology, University of Oxford, Oxford, UK.
| | - Brian H Kopell
- Nash Family Center for Advanced Circuit Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Neuromodulation, Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Arianna N Davis
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Computational Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Matthew Heflin
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Computational Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Qixiu Fu
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Computational Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ofer Perl
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Computational Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kimia Ziafat
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Alice Hashemi
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ignacio Saez
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Leonardo S Barbosa
- Fralin Biomedical Research Institute at VTC, Virginia Tech, Roanoke, VA, USA
| | - Thomas Twomey
- Fralin Biomedical Research Institute at VTC, Virginia Tech, Roanoke, VA, USA
| | - Terry Lohrenz
- Fralin Biomedical Research Institute at VTC, Virginia Tech, Roanoke, VA, USA
| | - Jason P White
- Fralin Biomedical Research Institute at VTC, Virginia Tech, Roanoke, VA, USA
| | - Peter Dayan
- Max Planck Institute for Biological Cybernetics, Tübingen, Germany
- University of Tübingen, Tübingen, Germany
| | - Alexander W Charney
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Martijn Figee
- Nash Family Center for Advanced Circuit Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Neuromodulation, Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Helen S Mayberg
- Nash Family Center for Advanced Circuit Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Neuromodulation, Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kenneth T Kishida
- Department of Translational Neuroscience, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Department of Neurosurgery, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Xiaosi Gu
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Center for Computational Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - P Read Montague
- Fralin Biomedical Research Institute at VTC, Virginia Tech, Roanoke, VA, USA.
- Wellcome Centre for Human Neuroimaging, University College London, London, UK.
- Department of Physics, Virginia Tech, Blacksburg, VA, USA.
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2
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Xu H, Luo L, Zhu R, Zhao Y, Zhang L, Zhang Y, Feng C, Guan Q. Common and distinct equity preferences in children and adults. Front Psychol 2024; 15:1330024. [PMID: 38420165 PMCID: PMC10899522 DOI: 10.3389/fpsyg.2024.1330024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 01/30/2024] [Indexed: 03/02/2024] Open
Abstract
Fairness plays a crucial role in children's social life and has garnered considerable attention. However, previous research and theories primarily examined the development of children's fairness behaviors in the conflict between self-interest motivation and fairness-complying motivation, neglecting the influence of advantage-seeking motivation. Moreover, despite the well-established role of gain/loss frame in human decision-making, it remains largely unclear whether the framing effect modulates fairness behaviors in children. It was hypothesized that children would exhibit advantage-seeking motivation resulting in more selfish behaviors in the loss context. To examine the hypothesis, we combined an adapted dictator game and computational modeling to investigate various motivations underlying fairness behaviors of children in both loss and gain contexts and to explore the developmental directions by contrasting children and adults. In addition, the current design enabled the dissociation between fairness knowledge and behaviors by asking participants to decide for themselves (the first-party role) or for others (the third-party role). This study recruited a total of 34 children (9-10 years, Mage = 9.82, SDage = 0.38, 16 females) and 31 college students (Mage = 19.81, SDage = 1.40, 17 females). The behavioral results indicated that children behaved more selfishly in first-party and more fairly in third-party than adults, without any significant framing effects. The computational results revealed that both children and adults exhibited aversion to advantageous and disadvantageous inequity in third-party. However, they showed distinct preferences for advantageous inequity in first-party, with advantage-seeking preferences among children and aversion to advantageous inequity among adults. These findings contribute to a deeper understanding of children's social preferences and their developmental directions.
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Affiliation(s)
- Han Xu
- School of Psychology, Shenzhen University, Shenzhen, China
- Department of Psychology, University of Mannheim, Mannheim, Germany
| | - Lanxin Luo
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, China
- School of Psychology, South China Normal University, Guangzhou, China
- Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
- Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China
| | - Ruida Zhu
- Department of Psychology, Sun Yat-Sen University, Guangzhou, China
| | - Yue Zhao
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, China
- School of Psychology, South China Normal University, Guangzhou, China
- Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
- Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China
| | - Luansu Zhang
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, China
- School of Psychology, South China Normal University, Guangzhou, China
- Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
- Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China
| | - Yaqi Zhang
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, China
- School of Psychology, South China Normal University, Guangzhou, China
- Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
- Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China
| | - Chunliang Feng
- Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, China
- School of Psychology, South China Normal University, Guangzhou, China
- Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
- Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China
| | - Qing Guan
- School of Psychology, Shenzhen University, Shenzhen, China
- Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China
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3
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Marciano D, Staveland BR, Lin JJ, Saez I, Hsu M, Knight RT. Electrophysiological signatures of inequity-dependent reward encoding in the human OFC. Cell Rep 2023; 42:112865. [PMID: 37494185 DOI: 10.1016/j.celrep.2023.112865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 06/12/2023] [Accepted: 07/10/2023] [Indexed: 07/28/2023] Open
Abstract
Social decision making requires the integration of reward valuation and social cognition systems, both dependent on the orbitofrontal cortex (OFC). How these two OFC functions interact is largely unknown. We recorded intracranial activity from the OFC of ten patients making choices in a social context where reward inequity with a social counterpart varied and could be either advantageous or disadvantageous. We find that OFC high-frequency activity (HFA; 70-150 Hz) encodes self-reward, consistent with previous reports. We also observe encoding of the social counterpart's reward, as well as the type of inequity being experienced. Additionally, we find evidence of inequity-dependent reward encoding: depending on the type of inequity, electrodes rapidly and reversibly switch between different reward-encoding profiles. These results provide direct evidence for encoding of self- and other rewards in the human OFC and highlight the dynamic nature of encoding in the OFC as a function of social context.
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Affiliation(s)
- Deborah Marciano
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA; Haas School of Business, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Brooke R Staveland
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Jack J Lin
- Department of Neurology, University of California, Davis, Davis, CA 95616, USA; Center for Mind and Brain, University of California, Davis, Davis, CA 95616, USA
| | - Ignacio Saez
- Departments of Neuroscience, Neurosurgery and Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| | - Ming Hsu
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA; Haas School of Business, University of California, Berkeley, Berkeley, CA 94720, USA.
| | - Robert T Knight
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA; Department of Psychology, University of California, Berkeley, Berkeley, CA 94720, USA.
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4
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Novel 31-kHz calls emitted by female Lewis rats during social isolation and social inequality conditions. iScience 2023; 26:106243. [PMID: 36923001 PMCID: PMC10009291 DOI: 10.1016/j.isci.2023.106243] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 11/21/2022] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
Whether commonly used experimental animals show aversion toward inequality of social rewards, as humans do remains unknown. We examined whether rats emitted the 22-kHz distress calls under social reward inequality. Rats showed affiliative behavior for a specific human who repeatedly stroked and tickled them. When experimenter stroked another rat in front of them and during social isolation, these rats emitted novel calls with acoustic characteristics different from those of calls emitted under physical stress, namely air-puff. Under inequality conditions, rats emitted calls with higher frequency (∼31 kHz) and shorter duration (<0.5 s) than those emitted when receiving air-puff. However, with an affiliative human in front of them, the number of novel calls was lower and rats emitted 50-kHz calls, indicative of the appetitive state. These results indicate that rats distinguish between conditions of social reward inequality and the presence of an experimenter, and emit novel 31-kHz calls.
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5
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Feldmann LK, Lofredi R, Al-Fatly B, Busch JL, Mathiopoulou V, Roediger J, Krause P, Schneider GH, Faust K, Horn A, Kühn AA, Neumann WJ. Christmas-Related Reduction in Beta Activity in Parkinson's Disease. Mov Disord 2023; 38:692-697. [PMID: 36718788 DOI: 10.1002/mds.29334] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/20/2022] [Accepted: 01/09/2023] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Subthalamic nucleus (STN) beta (13 - 35 Hz) activity is a biomarker reflecting motor state in Parkinson's disease (PD). Adaptive deep brain stimulation (DBS) aims to use beta activity for therapeutic adjustments, but many aspects of beta activity in real-life situations are unknown. OBJECTIVE The aim was to investigate Christmas-related influences on beta activity in PD. METHODS Differences in Christmas Day to nonfestive daily averages in chronic biomarker recordings in 4 PD patients with a sensing-enabled STN DBS implant were retrospectively analyzed. Sweet-spot and whole-brain network connectomic analyses were performed. RESULTS Beta activity was significantly reduced on Christmas Eve in all patients (4.00-9.00 p.m.: -12.30 ± 10.78%, P = 0.015). A sweet spot in the dorsolateral STN connected recording sites to motor, premotor, and supplementary motor cortices. CONCLUSIONS We demonstrate that festive events can reduce beta biomarker activity. We conclude that circadian and holiday-related changes should be considered when tailoring adaptive DBS algorithms to patient demands. © 2023 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Lucia K Feldmann
- Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Roxanne Lofredi
- Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Bassam Al-Fatly
- Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Johannes L Busch
- Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Varvara Mathiopoulou
- Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Jan Roediger
- Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Einstein Center for Neurosciences Berlin, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Patricia Krause
- Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | | | - Katharina Faust
- Department of Neurosurgery, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Andreas Horn
- Department of Neurology, Harvard Medical School, Boston, Massachusetts, USA.,Center for Brain Circuit Therapeutics, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Department of Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Andrea A Kühn
- Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Berlin School of Mind and Brain, Charité University Medicine, Berlin, Germany.,NeuroCure Clinical Research Centre, Charité University Medicine, Berlin, Germany.,DZNE, German Center for Degenerative Diseases, Berlin, Germany
| | - Wolf-Julian Neumann
- Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Einstein Center for Neurosciences Berlin, Charité-Universitätsmedizin Berlin, Berlin, Germany
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6
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Hu J, Konovalov A, Ruff CC. A unified neural account of contextual and individual differences in altruism. eLife 2023; 12:80667. [PMID: 36752704 PMCID: PMC9908080 DOI: 10.7554/elife.80667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 01/19/2023] [Indexed: 02/09/2023] Open
Abstract
Altruism is critical for cooperation and productivity in human societies but is known to vary strongly across contexts and individuals. The origin of these differences is largely unknown, but may in principle reflect variations in different neurocognitive processes that temporally unfold during altruistic decision making (ranging from initial perceptual processing via value computations to final integrative choice mechanisms). Here, we elucidate the neural origins of individual and contextual differences in altruism by examining altruistic choices in different inequality contexts with computational modeling and electroencephalography (EEG). Our results show that across all contexts and individuals, wealth distribution choices recruit a similar late decision process evident in model-predicted evidence accumulation signals over parietal regions. Contextual and individual differences in behavior related instead to initial processing of stimulus-locked inequality-related value information in centroparietal and centrofrontal sensors, as well as to gamma-band synchronization of these value-related signals with parietal response-locked evidence-accumulation signals. Our findings suggest separable biological bases for individual and contextual differences in altruism that relate to differences in the initial processing of choice-relevant information.
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Affiliation(s)
- Jie Hu
- Zurich Center for Neuroeconomics, Department of Economics, University of ZurichZurichSwitzerland
| | - Arkady Konovalov
- Zurich Center for Neuroeconomics, Department of Economics, University of ZurichZurichSwitzerland,Centre for Human Brain Health, School of Psychology, University of BirminghamBirminghamUnited Kingdom
| | - Christian C Ruff
- Zurich Center for Neuroeconomics, Department of Economics, University of ZurichZurichSwitzerland,University Research Priority Program 'Adaptive Brain Circuits in Development and Learning' (URPP AdaBD), University of ZurichZurichSwitzerland
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7
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Blain B, Marks J, Czech P, Sharot T. Observing others give & take: A computational account of bystanders' feelings and actions. PLoS Comput Biol 2022; 18:e1010010. [PMID: 35500029 PMCID: PMC9098039 DOI: 10.1371/journal.pcbi.1010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 05/12/2022] [Accepted: 03/10/2022] [Indexed: 11/25/2022] Open
Abstract
Social interactions influence people's feelings and behavior. Here, we propose that a person's well-being is influenced not only by interactions they experience themselves, but also by those they observe. In particular, we test and quantify the influence of observed selfishness and observed inequality on a bystanders' feelings and non-costly punishment decisions. We developed computational models that relate others' (un)selfish acts to observers' emotional reactions and punishment decisions. These characterize the rules by which others' interactions are transformed into bystanders' reactions, and successfully predict those reactions in out-of-sample participants. The models highlight the impact of two social values-'selfishness aversion' and 'inequality aversion'. As for the latter we find that even small violations from perfect equality have a disproportionately large impact on feelings and punishment. In this age of internet and social media we constantly observe others' online interactions, in addition to in-person interactions. Quantifying the consequences of such observations is important for predicting their impact on society.
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Affiliation(s)
- Bastien Blain
- Affective Brain Lab, Experimental Psychology, University College London, London, United Kingdom
| | - Joseph Marks
- Affective Brain Lab, Experimental Psychology, University College London, London, United Kingdom
| | - Philipp Czech
- Affective Brain Lab, Experimental Psychology, University College London, London, United Kingdom
- Berlin School of Mind and Brain, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Tali Sharot
- Affective Brain Lab, Experimental Psychology, University College London, London, United Kingdom
- The Max Planck UCL Centre for Computational Psychiatry and Ageing Research, University College London, London, United Kingdom
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Boston, United State of America
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8
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Behavioral Phenotype in Heterozygous DAT Rats: Transgenerational Transmission of Maternal Impact and the Role of Genetic Asset. Brain Sci 2022; 12:brainsci12040469. [PMID: 35448000 PMCID: PMC9032929 DOI: 10.3390/brainsci12040469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/23/2022] [Accepted: 03/30/2022] [Indexed: 11/17/2022] Open
Abstract
Dopamine transporter (DAT) is involved in dopamine (DA) reuptake in presynaptic terminals. Deletion of DAT results in a hyperdopaminergic KO-rat phenotype. To conduct our studies in heterozygous DAT rats, several pedigree lines were created, with known derivation of the allele (i.e., maternal or paternal). Our purpose was to elucidate the role of parental origin rather than maternal care, assessing if maternal maltreatments generated sequelae in female offspring. In the first experiment, female rats and their pups were observed during postnatal lactation. Control dams were WT and heterozygous ones were MAT (but K-MAT, with previous experience of early maltreatment by their KO adoptive dams). WT dams were highly attracted to their offspring (predictably, they spent a lot of time licking their pups); in contrast, K-MAT dams showed strangely comparable levels of caring for their pups and exploring the environment. Subsequently, peculiar features of the circadian cycle were found in adolescent rats with different epigenotypes (WT, MUX = offspring of MAT father, MIK = offspring of K-MAT dam). The MIK epigenotype produced locomotor hyperactivity also during resting hours, well above typical values. The MUX epigenotype, on the other hand, was less active and presented a depression-like profile. This study is unique: maltreatment was generated in a spontaneous way from a DAT-KO mother to offspring. We highlight how future studies will address separate contributions by genotype and upbringing. In conclusion, paternal-allele asset generates sequelae diametrically opposed to the inheritance of early maternal trauma.
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9
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Soutschek A, Jetter A, Tobler PN. Towards a Unifying Account of Dopamine’s Role in Cost-Benefit Decision Making. BIOLOGICAL PSYCHIATRY GLOBAL OPEN SCIENCE 2022; 3:179-186. [PMID: 37124350 PMCID: PMC10140448 DOI: 10.1016/j.bpsgos.2022.02.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/25/2022] [Accepted: 02/25/2022] [Indexed: 10/18/2022] Open
Abstract
Dopamine is thought to play a crucial role in cost-benefit decision making, but so far there is no consensus on the precise role of dopamine in decision making. Here, we review the literature on dopaminergic manipulations of cost-benefit decision making in humans and evaluate how well different theoretical accounts explain the existing body of evidence. Reduced D2 stimulation tends to increase the willingness to bear delay and risk costs (i.e., wait for later rewards, take riskier options), while increased D1 and D2 receptor stimulation increases willingness to bear effort costs. We argue that the empirical findings can best be explained by combining the strengths of two theoretical accounts: in cost-benefit decision making, dopamine may play a dual role both in promoting the pursuit of psychologically close options (e.g., sooner and safer rewards) and in computing which costs are acceptable for a reward at stake. Moreover, we identify several limiting factors in the study designs of previous investigations that prevented a fuller understanding of dopamine's role in value-based choice. Together, the proposed theoretical framework and the methodological suggestions for future studies may bring us closer to a unifying account of dopamine in healthy and impaired cost-benefit decision making.
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10
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Brethel-Haurwitz KM, Oathes DJ, Kable JW. Causal Role of the Right Temporoparietal Junction in Selfishness Depends on the Social Partner. Soc Cogn Affect Neurosci 2021; 17:541-548. [PMID: 34922402 PMCID: PMC9164207 DOI: 10.1093/scan/nsab136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 09/02/2021] [Accepted: 12/17/2021] [Indexed: 11/25/2022] Open
Abstract
The right temporoparietal junction (rTPJ) is a hub of the mentalizing network, but its causal role in social decisions remains an area of active investigation. While prior studies using causal neurostimulation methods have confirmed the role of the rTPJ in mentalizing and strategic social interactions, most of the evidence for its role in resource-sharing decisions comes from correlational neuroimaging studies. Further, it remains unclear if the influence of the rTPJ on decisions about sharing resources depends on whether the other person is salient and identifiable. To clarify the causal role of the rTPJ in social decision making, we examined the effects of putatively inhibitory rTPJ transcranial magnetic stimulation (TMS) on Dictator Game behavior with one partner that was physically present and one that was only minimally identified. Under control conditions, participants tended to create more advantageous inequity toward the partner that was only minimally identified, selfishly keeping more resources themselves. rTPJ TMS reduced this differential treatment of the two partners. Clarifying prior mixed findings, results suggest that the rTPJ may play a role in differentiating between others when deciding how equitably to divide resources, but may not play a general role in reducing selfishness by promoting aversion to advantageous inequity.
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Affiliation(s)
- Kristin M Brethel-Haurwitz
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA.,MindCORE, University of Pennsylvania, Philadelphia, PA, USA
| | - Desmond J Oathes
- MindCORE, University of Pennsylvania, Philadelphia, PA, USA.,Department of Psychiatry and Center for Neuromodulation in Depression and Stress, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Joseph W Kable
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA.,MindCORE, University of Pennsylvania, Philadelphia, PA, USA
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11
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Gross J, Faber NS, Kappes A, Nussberger AM, Cowen PJ, Browning M, Kahane G, Savulescu J, Crockett MJ, De Dreu CK. When Helping Is Risky: The Behavioral and Neurobiological Trade-off of Social and Risk Preferences. Psychol Sci 2021; 32:1842-1855. [PMID: 34705578 PMCID: PMC7614101 DOI: 10.1177/09567976211015942] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Helping other people can entail risks for the helper. For example, when treating infectious patients, medical volunteers risk their own health. In such situations, decisions to help should depend on the individual's valuation of others' well-being (social preferences) and the degree of personal risk the individual finds acceptable (risk preferences). We investigated how these distinct preferences are psychologically and neurobiologically integrated when helping is risky. We used incentivized decision-making tasks (Study 1; N = 292 adults) and manipulated dopamine and norepinephrine levels in the brain by administering methylphenidate, atomoxetine, or a placebo (Study 2; N = 154 adults). We found that social and risk preferences are independent drivers of risky helping. Methylphenidate increased risky helping by selectively altering risk preferences rather than social preferences. Atomoxetine influenced neither risk preferences nor social preferences and did not affect risky helping. This suggests that methylphenidate-altered dopamine concentrations affect helping decisions that entail a risk to the helper.
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Affiliation(s)
- Jörg Gross
- Institute of Psychology, Leiden University,Corresponding author: Jörg Gross, Leiden University, Institute of Psychology, Wassenaarseweg 52, 2300 RB Leiden, , +31 71 527 2727
| | - Nadira S. Faber
- College of Life and Environmental Sciences, University of Exeter,Oxford Uehiro Centre for Practical Ethics, University of Oxford
| | | | | | - Philip J Cowen
- Department of Psychiatry, University of Oxford,Oxford Health NHS Foundation Trust, Oxford
| | - Michael Browning
- Department of Psychiatry, University of Oxford,Oxford Health NHS Foundation Trust, Oxford
| | - Guy Kahane
- Oxford Uehiro Centre for Practical Ethics, University of Oxford
| | | | | | - Carsten K.W. De Dreu
- Institute of Psychology, Leiden University,Center for Research in Experimental Economics and Political Decision Making (CREED), University of Amsterdam
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12
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Furman DJ, Zhang Z, Chatham CH, Good M, Badre D, Hsu M, Kayser AS. Augmenting Frontal Dopamine Tone Enhances Maintenance over Gating Processes in Working Memory. J Cogn Neurosci 2021; 33:1753-1765. [PMID: 33054556 DOI: 10.1162/jocn_a_01641] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The contents of working memory must be maintained in the face of distraction, but updated when appropriate. To manage these competing demands of stability and flexibility, maintained representations in working memory are complemented by distinct gating mechanisms that selectively transmit information into and out of memory stores. The operations of such dopamine-dependent gating systems in the midbrain and striatum and their complementary dopamine-dependent memory maintenance operations in the cortex may therefore be dissociable. If true, selective increases in cortical dopamine tone should preferentially enhance maintenance over gating mechanisms. To test this hypothesis, tolcapone, a catechol-O-methyltransferase inhibitor that preferentially increases cortical dopamine tone, was administered in a randomized, double-blind, placebo-controlled, within-subject fashion to 49 participants who completed a hierarchical working memory task that varied maintenance and gating demands. Tolcapone improved performance in a condition with higher maintenance requirements and reduced gating demands, reflected in a reduction in the slope of RTs across the distribution. Resting-state fMRI data demonstrated that the degree to which tolcapone improved performance in individual participants correlated with increased connectivity between a region important for stimulus response mappings (left dorsal premotor cortex) and cortical areas implicated in visual working memory, including the intraparietal sulcus and fusiform gyrus. Together, these results provide evidence that augmenting cortical dopamine tone preferentially improves working memory maintenance.
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Affiliation(s)
- Daniella J Furman
- University of California, San Francisco.,University of California, Berkeley
| | | | | | | | | | - Ming Hsu
- University of California, Berkeley
| | - Andrew S Kayser
- University of California, San Francisco.,University of California, Berkeley.,VA Northern California Health Care System
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13
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Yu H, Lu C, Gao X, Shen B, Liu K, Li W, Xiao Y, Yang B, Zhao X, Crockett MJ, Zhou X. Explaining Individual Differences in Advantageous Inequity Aversion by Social-Affective Trait Dimensions and Family Environment. SOCIAL PSYCHOLOGICAL AND PERSONALITY SCIENCE 2021. [DOI: 10.1177/19485506211027794] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Humans are averse to both having less (i.e., disadvantageous inequity aversion [IA]) and having more than others (i.e., advantageous IA). However, the social-affective traits that drive individual differences in IA are not well understood. Here, by combining a modified dictator game and a computational model, we found in a sample of incarcerated adolescents ( N = 67) that callous-unemotional traits were specifically associated with low advantageous but not disadvantageous IA. We replicated and extended the finding in a large-scale university student sample ( N = 2,250) by adopting a dimensional approach to social-affective trait measures. We showed that advantageous IA was strongly and negatively associated with a trait dimension characterized by callousness and lack of social emotions (e.g., guilt and compassion). A supportive family environment negatively correlated with this trait dimension and positively with advantageous IA. These results identify a core set of social-affective dimensions specifically associated with advantageous IA.
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Affiliation(s)
- Hongbo Yu
- Department of Psychological and Brain Sciences, University of California Santa Barbara, CA, USA
| | - Chunlei Lu
- Institute of Psychological and Brain Sciences, Zhejiang Normal University, China
| | - Xiaoxue Gao
- School of Psychological and Cognitive Sciences, Peking University, Beijing, China
| | - Bo Shen
- Institute of Psychological and Brain Sciences, Zhejiang Normal University, China
| | - Kui Liu
- Institute of Psychological and Brain Sciences, Zhejiang Normal University, China
| | - Weijian Li
- Institute of Psychological and Brain Sciences, Zhejiang Normal University, China
| | - Yuqin Xiao
- School of Sociology, China University of Political Science and Law, Beijing, China
| | - Bo Yang
- School of Sociology, China University of Political Science and Law, Beijing, China
| | - Xudong Zhao
- Pudong Mental Health Centre, Tongji University School of Medicine, Shanghai, China
- Department of Psychology, Tongji University, Shanghai, China
| | | | - Xiaolin Zhou
- Institute of Psychological and Brain Sciences, Zhejiang Normal University, China
- School of Psychological and Cognitive Sciences, Peking University, Beijing, China
- Department of Psychology, Tongji University, Shanghai, China
- Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, China
- PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
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14
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Terenzi D, Liu L, Bellucci G, Park SQ. Determinants and modulators of human social decisions. Neurosci Biobehav Rev 2021; 128:383-393. [PMID: 34216653 DOI: 10.1016/j.neubiorev.2021.06.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/21/2021] [Accepted: 06/28/2021] [Indexed: 12/17/2022]
Abstract
Social decision making is a highly complex process that involves diverse cognitive mechanisms, and it is driven by the precise processing of information from both the environment and from the internal state. On the one hand, successful social decisions require close monitoring of others' behavior, in order to track their intentions; this can guide not only decisions involving other people, but also one's own choices and preferences. On the other hand, internal states such as own reward or changes in hormonal and neurotransmitter states shape social decisions and their underlying neural function. Here, we review the current literature on modulators and determinants of human social decisions.
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Affiliation(s)
- Damiano Terenzi
- Department of Decision Neuroscience and Nutrition, German Institute of Human Nutrition (DIfE), Potsdam-Rehbrücke, Germany; Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, 10117, Berlin, Germany; Berlin Institute of Health, Neuroscience Research Center, 10117, Berlin, Germany; Deutsches Zentrum für Diabetes, Neuherberg, Germany.
| | - Lu Liu
- Department of Decision Neuroscience and Nutrition, German Institute of Human Nutrition (DIfE), Potsdam-Rehbrücke, Germany; Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, 10117, Berlin, Germany; Berlin Institute of Health, Neuroscience Research Center, 10117, Berlin, Germany; Deutsches Zentrum für Diabetes, Neuherberg, Germany; Department of Psychology, Sun Yat-sen University, Guangzhou, China.
| | - Gabriele Bellucci
- Department of Computational Neuroscience, Max Planck Institute for Biological Cybernetics Tübingen, Germany
| | - Soyoung Q Park
- Department of Decision Neuroscience and Nutrition, German Institute of Human Nutrition (DIfE), Potsdam-Rehbrücke, Germany; Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, 10117, Berlin, Germany; Berlin Institute of Health, Neuroscience Research Center, 10117, Berlin, Germany; Deutsches Zentrum für Diabetes, Neuherberg, Germany
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15
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Amstutz D, Michelis JP, Debove I, Maradan‐Gachet ME, Lachenmayer ML, Muellner J, Schwegler K, Krack P. Reckless Generosity, Parkinson's Disease and Dopamine: A Case Series and Literature Review. Mov Disord Clin Pract 2021; 8:469-473. [PMID: 33816681 PMCID: PMC8015883 DOI: 10.1002/mdc3.13156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/12/2021] [Accepted: 01/16/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Impulse control disorders (ICDs) are a frequent side effect of dopamine replacement therapy (DRT) in Parkinson's disease (PD). Reckless generosity might expand the spectrum of known ICDs. CASES Over 18 months, we encountered three PD patients exhibiting reckless generosity under DRT, leading to disastrous financial and social consequences. LITERATURE REVIEW Except for another case series describing reckless generosity in three PD patients, only one study has examined generosity in PD patients; with findings suggesting that PD patients with ICDs are less sensitive to the aversive aspects of the lack of reciprocation in social settings. Studies with healthy individuals suggest that increased availability of dopamine might reduce social discounting and promote egalitarian behavior, and thereby increase generous behavior towards strangers. Genetic studies show that polymorphisms in dopamine D4 receptors influence generous behavior. CONCLUSIONS Reckless generosity in PD patients with DRT might be underreported and should therefore be carefully be screened for by clinicians. A potential mechanism underlying this ICD-related behavior might be a sensitization of the mesolimbic and mesocortical dopaminergic system, leading to reduced social discounting and maladaptive reward-learning. Further research is needed to investigate the prevalence and underlying mechanisms of reckless generosity in PD patients.
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Affiliation(s)
- Deborah Amstutz
- Department of NeurologyUniversity Hospital Bern, University of BernFreiburgstrasse 183010 BernSwitzerland
- Graduate School for Health SciencesUniversity of BernMittelstrasse 433012 BernSwitzerland
| | - Joan Philipp Michelis
- Department of NeurologyUniversity Hospital Bern, University of BernFreiburgstrasse 183010 BernSwitzerland
| | - Ines Debove
- Department of NeurologyUniversity Hospital Bern, University of BernFreiburgstrasse 183010 BernSwitzerland
| | - Marie Elise Maradan‐Gachet
- Department of NeurologyUniversity Hospital Bern, University of BernFreiburgstrasse 183010 BernSwitzerland
- Graduate School for Health SciencesUniversity of BernMittelstrasse 433012 BernSwitzerland
| | - Martin Lenard Lachenmayer
- Department of NeurologyUniversity Hospital Bern, University of BernFreiburgstrasse 183010 BernSwitzerland
| | - Julia Muellner
- Department of NeurologyUniversity Hospital Bern, University of BernFreiburgstrasse 183010 BernSwitzerland
| | - Kyrill Schwegler
- Department of NeurologyUniversity Hospital Bern, University of BernFreiburgstrasse 183010 BernSwitzerland
| | - Paul Krack
- Department of NeurologyUniversity Hospital Bern, University of BernFreiburgstrasse 183010 BernSwitzerland
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16
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Zhu R, Xu Z, Tang H, Wang H, Zhang S, Zhang Z, Mai X, Liu C. The dark side of gratitude: Gratitude could lead to moral violation. JOURNAL OF EXPERIMENTAL SOCIAL PSYCHOLOGY 2020. [DOI: 10.1016/j.jesp.2020.104048] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Wang D, Ma Y. Oxytocin facilitates valence-dependent valuation of social evaluation of the self. Commun Biol 2020; 3:433. [PMID: 32792516 PMCID: PMC7426917 DOI: 10.1038/s42003-020-01168-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 07/14/2020] [Indexed: 01/27/2023] Open
Abstract
People are eager to know the self in other’s eyes even with personal costs. However, what drives people costly to know evaluations remains unknown. Here we tested the hypothesis of placing subjective value on knowing social evaluations. To quantify the subjective value, we developed a pay-to-know choice task where individuals trade off profits against knowing social evaluations. Individuals computed independent unknown aversion towards positive and negative social evaluations and placed higher values on knowing social evaluation on positive than negative aspects. Such a valence-dependent valuation of social evaluation was facilitated by oxytocin, a neuropeptide linked to feedback learning and valuation processes, by decreasing values of negative social evaluation. Moreover, individuals scoring high in depression undervalued positive social evaluation, which was normalized by oxytocin. We reveal the psychological and computational processes underlying self-image formation/update and suggest a role of oxytocin in normalizing hypo-valuation of positive social evaluation in depression. Danyang Wang and Yina Ma measure the amount of money participants are willing to forgo for the opportunity to access social or non-social evaluations of the self. They show that subjective values on knowing social evaluation is valence-dependent whereas that on non-social evaluation is valence-insensitive. Moreover, oxytocin contributes to valence-dependent valuation on social evaluation.
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Affiliation(s)
- Danyang Wang
- State Key Laboratory of Cognitive Neuroscience and Learning, IDG/McGovern Institute for Brain Research, Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, 100875, China
| | - Yina Ma
- State Key Laboratory of Cognitive Neuroscience and Learning, IDG/McGovern Institute for Brain Research, Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, 100875, China.
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18
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Peters J, Vega T, Weinstein D, Mitchell J, Kayser A. Dopamine and Risky Decision-Making in Gambling Disorder. eNeuro 2020; 7:ENEURO.0461-19.2020. [PMID: 32341121 PMCID: PMC7294471 DOI: 10.1523/eneuro.0461-19.2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 04/15/2020] [Accepted: 04/17/2020] [Indexed: 12/03/2022] Open
Abstract
Gambling disorder is a behavioral addiction associated with impairments in value-based decision-making and cognitive control. These functions are thought to be regulated by dopamine within fronto-striatal circuits, but the role of altered dopamine neurotransmission in the etiology of gambling disorder remains controversial. Preliminary evidence suggests that increasing frontal dopamine tone might improve cognitive functioning in gambling disorder. We therefore examined whether increasing frontal dopamine tone via a single dose of the catechol-O-methyltransferase (COMT) inhibitor tolcapone would reduce risky choice in human gamblers (n = 14) in a randomized double-blind placebo-controlled crossover study. Data were analyzed using hierarchical Bayesian parameter estimation and a combined risky choice drift diffusion model (DDM). Model comparison revealed a nonlinear mapping from value differences to trial-wise drift rates, confirming recent findings. An increase in risk-taking under tolcapone versus placebo was about five times more likely, given the data, than a decrease [Bayes factor (BF) = 0.2]. Examination of drug effects on diffusion model parameters revealed that an increase in the value dependency of the drift rate under tolcapone was about thirteen times more likely than a decrease (BF = 0.073). In contrast, a reduction in the maximum drift rate under tolcapone was about seven times more likely than an increase (BF = 7.51). Results add to previous work on COMT inhibitors in behavioral addictions and to mounting evidence for the applicability of diffusion models in value-based decision-making. Future work should focus on individual genetic, clinical and cognitive factors that might account for heterogeneity in the effects of COMT inhibition.
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Affiliation(s)
- Jan Peters
- Department of Psychology, Biological Psychology, University of Cologne, Cologne 50923, Germany
| | - Taylor Vega
- Department of Neurology, VA Northern California Healthcare System, San Francisco, CA 94121
| | | | - Jennifer Mitchell
- Department of Psychiatry
- Department of Neurology, University of California, San Francisco, CA 94143
| | - Andrew Kayser
- Department of Neurology, VA Northern California Healthcare System, San Francisco, CA 94121
- Department of Neurology, University of California, San Francisco, CA 94143
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19
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Oroz Artigas S, Liu L, Strang S, Burrasch C, Hermsteiner A, Münte TF, Park SQ. Enhancement in dopamine reduces generous behaviour in women. PLoS One 2019; 14:e0226893. [PMID: 31891605 PMCID: PMC6938376 DOI: 10.1371/journal.pone.0226893] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 12/08/2019] [Indexed: 12/04/2022] Open
Abstract
Generosity is a human behavior common in social contexts. However, humans are not equally generous to everyone alike. Instead, generosity decreases as a function of social distance, an effect called social discounting. Studies show that such social discounting effect depends on diverse factors including personality traits, cultures, stress or hormonal levels. Recently, the importance of the neurotransmitter dopamine in regulating social interactions has been highlighted. However, it remains unclear how exactly dopamine agonist administration modulates generous behavior as a function of social discounting. Here, we investigate the causal effect of dopamine agonist administration on social discounting in a pharmacological intervention study. We employ a randomized, double-blind, within-subject design to investigate the impact of the D2/D3 receptor agonist pramipexole on social discounting by keeping gender constant. We apply hyperbolic social discount model to the data and provide evidence that women under pramipexole become less generous in general, especially towards close others. Our results highlight the crucial role of dopamine in social decision making.
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Affiliation(s)
| | - Lu Liu
- Department of Psychology, University of Lübeck, Lübeck, Germany
- Department of Decision Neuroscience & Nutrition, German Institute of Human Nutrition, Nuthetal, Germany
- Deutsches Zentrum für Diabetes, Neuherberg, Germany
| | - Sabrina Strang
- Department of Psychology, University of Lübeck, Lübeck, Germany
| | | | | | - Thomas F. Münte
- Department of Neurology, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
| | - Soyoung Q. Park
- Department of Psychology, University of Lübeck, Lübeck, Germany
- Department of Decision Neuroscience & Nutrition, German Institute of Human Nutrition, Nuthetal, Germany
- Deutsches Zentrum für Diabetes, Neuherberg, Germany
- Neuroscience Research Center, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
- * E-mail:
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20
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Kayser AS. Functional imaging. HANDBOOK OF CLINICAL NEUROLOGY 2019; 163:61-72. [PMID: 31590748 DOI: 10.1016/b978-0-12-804281-6.00004-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
Functional imaging methodology has revolutionized our ability to understand brain-behavior relationships. In contrast with the static images obtained with standard imaging methods, functional images permit us to track brain activity as humans view stimuli, hear sounds, consider choices, and make decisions. The insights now possible because of this technology have not only provided new potential markers for disease but have also permitted questions of neural mechanism to be addressed in living humans. Because of the breadth and depth of research that directly or tangentially touches upon functional imaging, it is impossible to do justice to the various subfields, analysis streams, and methodological complexities in one chapter. Instead, this chapter will provide a brief overview of the underlying conceptual framework, basic analytic techniques, and details of the imaging methodologies available for the acquisition of functional imaging data.
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Affiliation(s)
- Andrew S Kayser
- Department of Neurology, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, United States.
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21
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Yu H, Siegel JZ, Crockett MJ. Modeling Morality in 3-D: Decision-Making, Judgment, and Inference. Top Cogn Sci 2019; 11:409-432. [PMID: 31042018 PMCID: PMC6519237 DOI: 10.1111/tops.12382] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 07/09/2018] [Accepted: 07/13/2018] [Indexed: 12/31/2022]
Abstract
Humans face a fundamental challenge of how to balance selfish interests against moral considerations. Such trade-offs are implicit in moral decisions about what to do; judgments of whether an action is morally right or wrong; and inferences about the moral character of others. To date, these three dimensions of moral cognition-decision-making, judgment, and inference-have been studied largely independently, using very different experimental paradigms. However, important aspects of moral cognition occur at the intersection of multiple dimensions; for instance, moral hypocrisy can be conceived as a disconnect between moral decisions and moral judgments. Here we describe the advantages of investigating these three dimensions of moral cognition within a single computational framework. A core component of this framework is harm aversion, a moral sentiment defined as a distaste for harming others. The framework integrates economic utility models of harm aversion with Bayesian reinforcement learning models describing beliefs about others' harm aversion. We show how this framework can provide novel insights into the mechanisms of moral decision-making, judgment, and inference.
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Affiliation(s)
- Hongbo Yu
- Department of Experimental PsychologyUniversity of Oxford
- Department of PsychologyYale University
| | - Jenifer Z. Siegel
- Department of Experimental PsychologyUniversity of Oxford
- Department of PsychologyYale University
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22
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Romero T, Konno A, Nagasawa M, Hasegawa T. Oxytocin modulates responses to inequity in dogs. Physiol Behav 2019; 201:104-110. [DOI: 10.1016/j.physbeh.2018.12.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 12/20/2018] [Accepted: 12/24/2018] [Indexed: 01/05/2023]
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23
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Hu Y, He L, Zhang L, Wölk T, Dreher JC, Weber B. Spreading inequality: neural computations underlying paying-it-forward reciprocity. Soc Cogn Affect Neurosci 2019; 13:578-589. [PMID: 29897606 PMCID: PMC6022566 DOI: 10.1093/scan/nsy040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 05/29/2018] [Indexed: 12/13/2022] Open
Abstract
People tend to pay the generosity they receive from a person forward to someone else even if they have no chance to reciprocate directly. This phenomenon, known as paying-it-forward (PIF) reciprocity, crucially contributes to the maintenance of a cooperative human society by passing kindness among strangers and has been widely studied in evolutionary biology. To further examine its neural implementation and underlying computations, we used functional magnetic resonance imaging together with computational modeling. In a modified PIF paradigm, participants first received a monetary split (i.e. greedy, equal or generous) from either a human partner or a computer. They then chose between two options involving additional amounts of money to be allocated between themselves and an uninvolved person. Behaviorally, people forward the previously received greed/generosity towards a third person. The social impact of previous treatments is integrated into computational signals in the ventromedial prefrontal cortex and the right temporoparietal junction during subsequent decision making. Our findings provide insights to understand the proximal origin of PIF reciprocity.
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Affiliation(s)
- Yang Hu
- Center for Economics and Neuroscience, University of Bonn, 53127 Bonn, Germany
| | - Lisheng He
- Warwick Business School, The University of Warwick, Coventry CV4 7AL, UK
| | - Lei Zhang
- Institute for System Neuroscience, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Thorben Wölk
- Center for Economics and Neuroscience, University of Bonn, 53127 Bonn, Germany
| | - Jean-Claude Dreher
- Neuroeconomics, Reward and Decision Making Laboratory, Institut des Sciences Cognitives Marc Jeannerod, CNRS, 69675 Bron, France
| | - Bernd Weber
- Center for Economics and Neuroscience, University of Bonn, 53127 Bonn, Germany.,Department of Epileptology, University Hospital Bonn, 53127 Bonn, Germany
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24
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Konovalov A, Hu J, Ruff CC. Neurocomputational approaches to social behavior. Curr Opin Psychol 2018; 24:41-47. [DOI: 10.1016/j.copsyc.2018.04.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 04/06/2018] [Accepted: 04/11/2018] [Indexed: 12/01/2022]
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25
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Eddy CM, Cook JL. Emotions in action: The relationship between motor function and social cognition across multiple clinical populations. Prog Neuropsychopharmacol Biol Psychiatry 2018; 86:229-244. [PMID: 29857027 DOI: 10.1016/j.pnpbp.2018.05.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/17/2018] [Accepted: 05/25/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Clare M Eddy
- National Centre for Mental Health and College of Medical and Dental Sciences, BSMHFT, University of Birmingham, Birmingham, UK
| | - Jennifer L Cook
- School of Psychology, University of Birmingham, Birmingham, B15 2TT, UK.
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26
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Gao X, Yu H, Sáez I, Blue PR, Zhu L, Hsu M, Zhou X. Distinguishing neural correlates of context-dependent advantageous- and disadvantageous-inequity aversion. Proc Natl Acad Sci U S A 2018; 115:E7680-E7689. [PMID: 30061413 PMCID: PMC6099874 DOI: 10.1073/pnas.1802523115] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Humans can integrate social contextual information into decision-making processes to adjust their responses toward inequity. This context dependency emerges when individuals receive more (i.e., advantageous inequity) or less (i.e., disadvantageous inequity) than others. However, it is not clear whether context-dependent processing of advantageous and disadvantageous inequity involves differential neurocognitive mechanisms. Here, we used fMRI to address this question by combining an interactive game that modulates social contexts (e.g., interpersonal guilt) with computational models that enable us to characterize individual weights on inequity aversion. In each round, the participant played a dot estimation task with an anonymous coplayer. The coplayer would receive pain stimulation with 50% probability when either of them responded incorrectly. At the end of each round, the participant completed a variant of dictator game, which determined payoffs for him/herself and the coplayer. Computational modeling demonstrated the context dependency of inequity aversion: when causing pain to the coplayer (i.e., guilt context), participants cared more about the advantageous inequity and became more tolerant of the disadvantageous inequity, compared with other conditions. Consistently, neuroimaging results suggested the two types of inequity were associated with differential neurocognitive substrates. While the context-dependent processing of advantageous inequity was associated with social- and mentalizing-related processes, involving left anterior insula, right dorsolateral prefrontal cortex, and dorsomedial prefrontal cortex, the context-dependent processing of disadvantageous inequity was primarily associated with emotion- and conflict-related processes, involving left posterior insula, right amygdala, and dorsal anterior cingulate cortex. These results extend our understanding of decision-making processes related to inequity aversion.
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Affiliation(s)
- Xiaoxue Gao
- Center for Brain and Cognitive Sciences, Peking University, Beijing 100871, China
- School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China
- Key Laboratory of Machine Perception, Ministry of Education, Peking University, Beijing 100871, China
- Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing 100871, China
| | - Hongbo Yu
- Center for Brain and Cognitive Sciences, Peking University, Beijing 100871, China
- School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China
- Department of Psychology, Yale University, New Haven, CT 06520
- Department of Experimental Psychology, University of Oxford, Oxford OX2 6GG, United Kingdom
| | - Ignacio Sáez
- Haas School of Business, University of California, Berkeley, CA 94720
- Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720
| | - Philip R Blue
- Center for Brain and Cognitive Sciences, Peking University, Beijing 100871, China
- School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China
- Key Laboratory of Machine Perception, Ministry of Education, Peking University, Beijing 100871, China
- Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing 100871, China
| | - Lusha Zhu
- School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China
- Key Laboratory of Machine Perception, Ministry of Education, Peking University, Beijing 100871, China
- Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing 100871, China
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
- Peking University-IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
| | - Ming Hsu
- Haas School of Business, University of California, Berkeley, CA 94720
- Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720
| | - Xiaolin Zhou
- Center for Brain and Cognitive Sciences, Peking University, Beijing 100871, China;
- School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China
- Key Laboratory of Machine Perception, Ministry of Education, Peking University, Beijing 100871, China
- Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing 100871, China
- Peking University-IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
- Institute of Psychological and Brain Sciences, Zhejiang Normal University, Zhejiang 321004, China
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Soutschek A, Tobler PN. Motivation for the greater good: neural mechanisms of overcoming costs. Curr Opin Behav Sci 2018. [DOI: 10.1016/j.cobeha.2018.01.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Millenet SK, Nees F, Heintz S, Bach C, Frank J, Vollstädt-Klein S, Bokde A, Bromberg U, Büchel C, Quinlan EB, Desrivières S, Fröhner J, Flor H, Frouin V, Garavan H, Gowland P, Heinz A, Ittermann B, Lemaire H, Martinot JL, Martinot MLP, Papadoulos DO, Paus T, Poustka L, Rietschel M, Smolka MN, Walter H, Whelan R, Schumann G, Banaschewski T, Hohmann S. COMT Val158Met Polymorphism and Social Impairment Interactively Affect Attention-Deficit Hyperactivity Symptoms in Healthy Adolescents. Front Genet 2018; 9:284. [PMID: 30108607 PMCID: PMC6079264 DOI: 10.3389/fgene.2018.00284] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 07/10/2018] [Indexed: 01/09/2023] Open
Abstract
The dopaminergic system has been shown to have substantial effects on the etiology of attention-deficit hyperactivity disorder (ADHD). However, while some studies found a significant direct effect, others did not. In this context, social behavior might play an important role as a factor that is related both to the dopaminergic system and ADHD. In a large epidemiological sample of adolescents (N = 462; 16-17 years), we assessed the level of ADHD symptoms using the Strengths and Difficulties Questionnaire, social behavior using the Social Responsiveness Scale, and the allelic distribution of the dopaminergic catechol-O-methyltransferase (COMT) Val158Met polymorphism. We found a significant association between COMT and social impairment, insofar as Met-allele carriers showed increased levels of social impairment. Moreover, social impairment significantly determined an association between COMT and ADHD (explained variance: 19.09%). This effect did not significantly differ between males and females. COMT and social impairment might interactively affect ADHD symptomatology, and could thus represent significant gene-phenotypic risk factors for ADHD symptomatology. This might have interesting implications for prevention and intervention strategies with a focus on social behavior in genetically at-risk individuals.
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Affiliation(s)
- Sabina K. Millenet
- Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Frauke Nees
- Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- Department of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Stefan Heintz
- Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Christiane Bach
- Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- Department of Psychosomatic Medicine and Psychotherapy, University of Leipzig, Leipzig, Germany
| | - Josef Frank
- Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Sabine Vollstädt-Klein
- Department of Addictive Behavior and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Arun Bokde
- Discipline of Psychiatry, School of Medicine and Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Uli Bromberg
- University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Erin B. Quinlan
- Centre for Population Neuroscience and Stratified Medicine and MRC-SGDP Centre, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, United Kingdom
| | - Sylvane Desrivières
- Centre for Population Neuroscience and Stratified Medicine and MRC-SGDP Centre, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, United Kingdom
| | - Juliane Fröhner
- Department of Psychiatry and Neuroimaging Center, Technische Universität Dresden, Dresden, Germany
| | - Herta Flor
- Department of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- Department of Psychology, School of Social Sciences, University of Mannheim, Mannheim, Germany
| | - Vincent Frouin
- NeuroSpin, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Hugh Garavan
- Department of Psychiatry and Psychology, University of Vermont, Burlington, VT, United States
| | - Penny Gowland
- Sir Peter Mansfield Imaging Centre, School of Physics and Astronomy, University of Nottingham, Nottingham, United Kingdom
| | - Andreas Heinz
- Department of Psychiatry and Psychotherapy, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Bernd Ittermann
- Physikalisch-Technische Bundesanstalt, Braunschweig Institute Berlin, Germany
| | - Herve Lemaire
- Institut National de la Santé et de la Recherche Médicale, INSERM Unit 1000 “Neuroimaging & Psychiatry,” Faculté de Médecine, Université Paris-Sud, Le Kremlin-Bicêtre; and Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Jean-Luc Martinot
- Institut National de la Santé et de la Recherche Médicale, INSERM Unit 1000 “Neuroimaging & Psychiatry,” University Paris Sud – Paris Saclay, University Paris Descartes; Service Hospitalier Frédéric Joliot, Orsay; and Maison de Solenn, Paris, France
| | - Marie-Laure P. Martinot
- Institut National de la Santé et de la Recherche Médicale, INSERM Unit 1000 “Neuroimaging & Psychiatry,” University Paris Sud – Paris Saclay, University Paris Descartes; and AP-HP, Department of Adolescent Psychopathology and Medicine, Maison de Solenn, Cochin Hospital, Paris, France
| | | | - Tomáš Paus
- Rotman Research Institute, Baycrest Centre for Geriatric Care, Department of Psychology and Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Luise Poustka
- Department of Child and Adolescent Psychiatry and Psychotherapy, University Medical Centre Göttingen, Göttingen, Germany
| | - Marcella Rietschel
- Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Michael N. Smolka
- Department of Psychiatry and Neuroimaging Center, Technische Universität Dresden, Dresden, Germany
| | - Henrik Walter
- Department of Psychiatry and Psychotherapy, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | | | - Gunter Schumann
- Centre for Population Neuroscience and Stratified Medicine and MRC-SGDP Centre, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, United Kingdom
| | - Tobias Banaschewski
- Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Sarah Hohmann
- Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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Spee B, Ishizu T, Leder H, Mikuni J, Kawabata H, Pelowski M. Neuropsychopharmacological aesthetics: A theoretical consideration of pharmacological approaches to causative brain study in aesthetics and art. PROGRESS IN BRAIN RESEARCH 2018; 237:343-372. [PMID: 29779743 DOI: 10.1016/bs.pbr.2018.03.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Recent developments in neuroaesthetics have heightened the need for causative approaches to more deeply understand the mechanism underlying perception, emotion, and aesthetic experiences. This has recently been the topic for empirical work, employing several causative methods for changing brain activity, as well as comparative assessments of individuals with brain damage or disease. However, one area of study with high potential, and indeed a long history of often nonscientific use in the area of aesthetics and art, employing psychopharmacological chemicals as means of changing brain function, has not been systematically utilized. This chapter reviews the literature on this topic, analyzing neuroendocrinological (neurochemical) approaches and mechanisms that might be used to causatively study the aesthetic brain. We focus on four relevant neuromodulatory systems potentially related to aesthetic experience: the dopaminergic, serotonergic, cannabinoid, and the opioidergic system. We build a bridge to psychopharmacological methods and review drug-induced behavioral and neurobiological consequences. We conclude with a discussion of hypotheses and suggestions for future research.
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Affiliation(s)
- Blanca Spee
- University of Vienna, Faculty of Psychology, Vienna, Austria
| | - Tomohiro Ishizu
- University of Vienna, Faculty of Psychology, Vienna, Austria
| | - Helmut Leder
- University of Vienna, Faculty of Psychology, Vienna, Austria
| | - Jan Mikuni
- Department of Psychology, Keio University, Tokyo, Japan
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Abstract
RATIONALE Impairment in time perception, a critical component of decision-making, represents a risk factor for psychiatric conditions including substance abuse. A therapeutic that ameliorates this impairment could be advantageous in the treatment of impulsivity and decision-making disorders. OBJECTIVES Here we hypothesize that the catechol-O-methyltransferase (COMT) inhibitor tolcapone, which increases dopamine tone in frontal cortex (Ceravolo et al Synapse 43:201-207, 2002), improves time perception, with predictive behavioral, genetic, and neurobiological components. METHODS Subjects (n = 66) completed a duration estimation task and other behavioral testing in each of two sessions after receiving a single oral dose of tolcapone (200 mg) or placebo in randomized, double-blind, counterbalanced, crossover fashion. Resting state fMRI data were obtained in a subset of subjects (n = 40). Subjects were also genotyped for the COMT (rs4680) polymorphism. RESULTS Time perception was significantly improved across four proximal time points ranging from 5 to 60 s (T(524) = 2.04, p = 0.042). The degree of this improvement positively correlated with subjective measures of stress, depression, and alcohol consumption and was most robust in carriers of the COMT Val158 allele. Using seed regions defined by a previous meta-analysis (Wiener et al Neuroimage 49:1728-1740, 2010), we found not only that a connection from right inferior frontal gyrus (RIFG) to right putamen decreases in strength on tolcapone versus placebo (p < 0.05, corrected), but also that the strength of this decrease correlates inversely with the increase in duration estimation on tolcapone versus placebo (r = - 0.37, p = 0.02). CONCLUSIONS Compressed time perception can be ameliorated by administration of tolcapone. Additional studies should be conducted to determine whether COMT inhibitors may be effective in treating decision-making disorders and addictive behaviors.
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31
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Protopapadakis ED. In Defense of Pharmaceutically Enhancing Human Morality. Curr Ther Res Clin Exp 2017; 86:9-12. [PMID: 29234481 PMCID: PMC5717298 DOI: 10.1016/j.curtheres.2017.01.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2017] [Indexed: 11/23/2022] Open
Abstract
Purpose I will discuss the prospect of pharmaceutically enhancing human morality and decision making in such a way as to eliminate morally unjustifiable choices and promote desirable ones. Background Our species in the relatively short period since it has emerged has enormously advanced in knowledge, science, and technical progress. When it comes to moral development, the distance it has covered is almost negligible. What if we could medically accelerate our moral development? What if we could once and for all render our species totally immune to certain vices? Methodology I will examine whether pharmaceutically intervening in human morality would compromise the autonomy of moral agents. I will argue that the argument from the autonomy of the moral agent is neither stable nor convincing. Conclusions In the light of Kantian ethics we might consider moral enhancement by pharmaceutical means to be a perfect duty for moral agents.
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Affiliation(s)
- Evangelos D Protopapadakis
- National and Kapodistrian University of Athens, Athens, Greece.,Applied Philosophy Research Laboratory, National and Kapodistrian University of Athens, Athens, Greece
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32
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Marinho V, Oliveira T, Rocha K, Ribeiro J, Magalhães F, Bento T, Pinto GR, Velasques B, Ribeiro P, Di Giorgio L, Orsini M, Gupta DS, Bittencourt J, Bastos VH, Teixeira S. The dopaminergic system dynamic in the time perception: a review of the evidence. Int J Neurosci 2017; 128:262-282. [PMID: 28950734 DOI: 10.1080/00207454.2017.1385614] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Dopaminergic system plays a key role in perception, which is an important executive function of the brain. Modulation in dopaminergic system forms an important biochemical underpinning of neural mechanisms of time perception in a very wide range, from milliseconds to seconds to longer daily rhythms. Distinct types of temporal experience are poorly understood, and the relationship between processing of different intervals by the brain has received little attention. A comprehensive understanding of interval timing functions should be sought within a wider context of temporal processing, involving genetic aspects, pharmacological models, cognitive aspects, motor control and the neurological diseases with impaired dopaminergic system. Particularly, an unexplored question is whether the role of dopamine in interval timing can be integrated with the role of dopamine in non-interval timing temporal components. In this review, we explore a wider perspective of dopaminergic system, involving genetic polymorphisms, pharmacological models, executive functions and neurological diseases on the time perception. We conclude that the dopaminergic system has great participation in impact on time perception and neurobiological basis of the executive functions and neurological diseases.
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Affiliation(s)
- Victor Marinho
- a Brain Mapping and Plasticity Laboratory, Federal University of Piauí (UFPI) , Parnaíba , Brazil.,b Genetics and Molecular Biology Laboratory, Federal University of Piauí , Parnaíba , Brazil
| | - Thomaz Oliveira
- a Brain Mapping and Plasticity Laboratory, Federal University of Piauí (UFPI) , Parnaíba , Brazil.,b Genetics and Molecular Biology Laboratory, Federal University of Piauí , Parnaíba , Brazil
| | - Kaline Rocha
- a Brain Mapping and Plasticity Laboratory, Federal University of Piauí (UFPI) , Parnaíba , Brazil
| | - Jéssica Ribeiro
- a Brain Mapping and Plasticity Laboratory, Federal University of Piauí (UFPI) , Parnaíba , Brazil
| | - Francisco Magalhães
- a Brain Mapping and Plasticity Laboratory, Federal University of Piauí (UFPI) , Parnaíba , Brazil
| | - Thalys Bento
- a Brain Mapping and Plasticity Laboratory, Federal University of Piauí (UFPI) , Parnaíba , Brazil
| | - Giovanny R Pinto
- b Genetics and Molecular Biology Laboratory, Federal University of Piauí , Parnaíba , Brazil
| | - Bruna Velasques
- c Brain Mapping and Sensory Motor Integration Laboratory, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ) , Rio de Janeiro , Brazil
| | - Pedro Ribeiro
- c Brain Mapping and Sensory Motor Integration Laboratory, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ) , Rio de Janeiro , Brazil
| | - Luiza Di Giorgio
- c Brain Mapping and Sensory Motor Integration Laboratory, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ) , Rio de Janeiro , Brazil
| | - Marco Orsini
- c Brain Mapping and Sensory Motor Integration Laboratory, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ) , Rio de Janeiro , Brazil.,d Rehabilitation Science Program, Analysis of Human Movement Laboratory, Augusto Motta University Center (UNISUAM) , Rio de Janeiro , Brazil
| | - Daya S Gupta
- e Department of Biology , Camden County College , Blackwood , NJ , USA
| | - Juliana Bittencourt
- f Biomedical Engineering Program (COPPE), Federal University of Rio de Janeiro (UFRJ) , Rio de Janeiro , Brazil
| | - Victor Hugo Bastos
- g Brain Mapping and Functionality Laboratory, Federal University of Piauí (UFPI) , Parnaíba , Brazil
| | - Silmar Teixeira
- a Brain Mapping and Plasticity Laboratory, Federal University of Piauí (UFPI) , Parnaíba , Brazil
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The dopaminergic reward system underpins gender differences in social preferences. Nat Hum Behav 2017; 1:819-827. [DOI: 10.1038/s41562-017-0226-y] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 09/12/2017] [Indexed: 12/20/2022]
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34
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The “highs and lows” of the human brain on dopaminergics: Evidence from neuropharmacology. Neurosci Biobehav Rev 2017. [DOI: 10.1016/j.neubiorev.2017.06.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Miller CWT. Epigenetic and Neural Circuitry Landscape of Psychotherapeutic Interventions. PSYCHIATRY JOURNAL 2017; 2017:5491812. [PMID: 29226124 PMCID: PMC5684598 DOI: 10.1155/2017/5491812] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Accepted: 04/11/2017] [Indexed: 11/21/2022]
Abstract
The science behind psychotherapy has garnered considerable interest, as objective measures are being developed to map the patient's subjective change over the course of treatment. Prenatal and early life influences have a lasting impact on how genes are expressed and the manner in which neural circuits are consolidated. Transgenerationally transmitted epigenetic markers as well as templates of enhanced thought flexibility versus evasion can be passed down from parent to child. This influences gene expression/repression (impacting neuroplasticity) and kindling of neurocircuitry which can perpetuate maladaptive cognitive processing seen in a number of psychiatric conditions. Importantly, genetic factors and the compounding effects of early life adversity do not inexorably lead to certain fated outcomes. The concepts of vulnerability and resilience are becoming more integrated into the framework of "differential susceptibility," speaking to how corrective environmental factors may promote epigenetic change and reconfigure neural templates, allowing for symptomatic improvement. Psychotherapy is one such factor, and this review will focus on our current knowledge of its epigenetic and neurocircuitry impact.
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Affiliation(s)
- Christopher W. T. Miller
- University of Maryland School of Medicine, 701 W. Pratt St., 4th Floor, Baltimore, MD 21201, USA
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36
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The Roles of Dopamine D2 Receptor in the Social Hierarchy of Rodents and Primates. Sci Rep 2017; 7:43348. [PMID: 28233850 PMCID: PMC5324123 DOI: 10.1038/srep43348] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 01/24/2017] [Indexed: 01/22/2023] Open
Abstract
Dopamine (DA) plays significant roles in regulation of social behavior. In social groups of humans and other animals, social hierarchy exists, which is determined by several behavioral characteristics such as aggression and impulsivity as well as social affiliations. In this study, we investigated the effects of pharmacological blockade of DA D2 receptor on social hierarchy of Japanese macaque and mouse social groups. We found acute administration of the D2 antagonist, sulpiride, in socially housed Japanese macaques attenuated social dominance when the drug was given to high social class macaques. A similar attenuation of social dominance was observed in high social class mice with D2 antagonist administration. In contrast, D2 antagonist administration in low social class macaque resulted in more stable social hierarchy of the group, whereas such effect was not observed in mouse social group. These results suggest that D2 receptor signaling may play important roles in establishment and maintenance of social hierarchy in social groups of several species of animals.
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Kayser AS, Vega T, Weinstein D, Peters J, Mitchell JM. Right inferior frontal cortex activity correlates with tolcapone responsivity in problem and pathological gamblers. Neuroimage Clin 2016; 13:339-348. [PMID: 28066708 PMCID: PMC5200917 DOI: 10.1016/j.nicl.2016.12.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 12/15/2016] [Accepted: 12/17/2016] [Indexed: 02/04/2023]
Abstract
Failures of self-regulation in problem and pathological gambling (PPG) are thought to emerge from failures of top-down control, reflected neurophysiologically in a reduced capacity of prefrontal cortex to influence activity within subcortical structures. In patients with addictions, these impairments have been argued to alter evaluation of reward within dopaminergic neuromodulatory systems. Previously we demonstrated that augmenting dopamine tone in frontal cortex via use of tolcapone, an inhibitor of the dopamine-degrading enzyme catechol-O-methyltransferase (COMT), reduced delay discounting, a measure of impulsivity, in healthy subjects. To evaluate this potentially translational approach to augmenting prefrontal inhibitory control, here we hypothesized that increasing cortical dopamine tone would reduce delay discounting in PPG subjects in proportion to its ability to augment top-down control. To causally test this hypothesis, we administered the COMT inhibitor tolcapone in a randomized, double-blind, placebo-controlled, within-subject study of 17 PPG subjects who performed a delay discounting task while functional MRI images were obtained. In this subject population, we found that greater BOLD activity during the placebo condition within the right inferior frontal cortex (RIFC), a region thought to be important for inhibitory control, correlated with greater declines in impulsivity on tolcapone versus placebo. Intriguingly, connectivity between RIFC and the right striatum, and not the level of activity within RIFC itself, increased on tolcapone versus placebo. Together, these findings support the hypothesis that tolcapone-mediated increases in top-down control may reduce impulsivity in PPG subjects, a finding with potential translational relevance for gambling disorders, and for behavioral addictions in general.
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Affiliation(s)
- Andrew S. Kayser
- Department of Neurology, University of California, San Francisco, United States
- Department of Neurology, VA Northern California Health Care System, United States
| | - Taylor Vega
- Department of Neurology, VA Northern California Health Care System, United States
| | - Dawn Weinstein
- Department of Neurology, University of California, San Francisco, United States
| | - Jan Peters
- Department of Psychology, University of Cologne, Germany
| | - Jennifer M. Mitchell
- Department of Neurology, University of California, San Francisco, United States
- Department of Psychiatry, University of California, San Francisco, United States
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39
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PANDORA'S BOX. BJPsych Int 2015; 12:102-103. [PMID: 29093876 PMCID: PMC5618863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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40
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What if there were a pill that made us more compassionate? BJPsych Int 2015. [DOI: 10.1192/s2056474000000726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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41
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Crockett MJ, Siegel JZ, Kurth-Nelson Z, Ousdal OT, Story G, Frieband C, Grosse-Rueskamp JM, Dayan P, Dolan RJ. Dissociable Effects of Serotonin and Dopamine on the Valuation of Harm in Moral Decision Making. Curr Biol 2015; 25:1852-9. [PMID: 26144968 PMCID: PMC4518463 DOI: 10.1016/j.cub.2015.05.021] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Revised: 05/09/2015] [Accepted: 05/12/2015] [Indexed: 01/10/2023]
Abstract
An aversion to harming others is a core component of human morality and is disturbed in antisocial behavior. Deficient harm aversion may underlie instrumental and reactive aggression, which both feature in psychopathy. Past work has highlighted monoaminergic influences on aggression, but a mechanistic account of how monoamines regulate antisocial motives remains elusive. We previously observed that most people show a greater aversion to inflicting pain on others than themselves. Here, we investigated whether this hyperaltruistic disposition is susceptible to monoaminergic control. We observed dissociable effects of the serotonin reuptake inhibitor citalopram and the dopamine precursor levodopa on decisions to inflict pain on oneself and others for financial gain. Computational models of choice behavior showed that citalopram increased harm aversion for both self and others, while levodopa reduced hyperaltruism. The effects of citalopram were stronger than those of levodopa. Crucially, neither drug influenced the physical perception of pain or other components of choice such as motor impulsivity or loss aversion, suggesting a direct and specific influence of serotonin and dopamine on the valuation of harm. We also found evidence for dose dependency of these effects. Finally, the drugs had dissociable effects on response times, with citalopram enhancing behavioral inhibition and levodopa reducing slowing related to being responsible for another's fate. These distinct roles of serotonin and dopamine in modulating moral behavior have implications for potential treatments of social dysfunction that is a common feature as well as a risk factor for many psychiatric disorders.
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Affiliation(s)
- Molly J Crockett
- Department of Experimental Psychology, University of Oxford, 9 South Parks Road, Oxford OX1 3UD, UK; Wellcome Trust Centre for Neuroimaging, University College London, 12 Queen Square, London WC1N 3BG, UK.
| | - Jenifer Z Siegel
- Department of Experimental Psychology, University of Oxford, 9 South Parks Road, Oxford OX1 3UD, UK
| | - Zeb Kurth-Nelson
- Wellcome Trust Centre for Neuroimaging, University College London, 12 Queen Square, London WC1N 3BG, UK; Max Planck-UCL Centre for Computational Psychiatry and Ageing, University College London, 12 Queen Square, London WC1N 3BG, UK
| | - Olga T Ousdal
- Wellcome Trust Centre for Neuroimaging, University College London, 12 Queen Square, London WC1N 3BG, UK; Department of Radiology, Haukeland University Hospital, Jonas Lies vei 65, 5021 Bergen, Norway
| | - Giles Story
- Wellcome Trust Centre for Neuroimaging, University College London, 12 Queen Square, London WC1N 3BG, UK
| | - Carolyn Frieband
- Wellcome Trust Centre for Neuroimaging, University College London, 12 Queen Square, London WC1N 3BG, UK
| | - Johanna M Grosse-Rueskamp
- Wellcome Trust Centre for Neuroimaging, University College London, 12 Queen Square, London WC1N 3BG, UK
| | - Peter Dayan
- Gatsby Computational Neuroscience Unit, University College London, Alexandra House, 17 Queen Square, London WC1N 3AR, UK
| | - Raymond J Dolan
- Wellcome Trust Centre for Neuroimaging, University College London, 12 Queen Square, London WC1N 3BG, UK; Max Planck-UCL Centre for Computational Psychiatry and Ageing, University College London, 12 Queen Square, London WC1N 3BG, UK
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Yamaguchi Y, Lee YA, Goto Y. Dopamine in socioecological and evolutionary perspectives: implications for psychiatric disorders. Front Neurosci 2015; 9:219. [PMID: 26136653 PMCID: PMC4468839 DOI: 10.3389/fnins.2015.00219] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 06/01/2015] [Indexed: 12/13/2022] Open
Abstract
Dopamine (DA) transmission in brain areas such as the prefrontal cortex (PFC) and nucleus accumbens (NAcc) plays important roles in cognitive and affective function. As such, DA deficits have been implicated in a number of psychiatric disorders such as schizophrenia and attention deficit/hyperactivity disorder (ADHD). Accumulating evidence suggests that DA is also involved in social behavior of animals and humans. Although most animals organize and live in social groups, how the DA system functions in such social groups of animals, and its dysfunction causes compromises in the groups has remained less understood. Here we propose that alterations of DA signaling and associated genetic variants and behavioral phenotypes, which have been normally considered as “deficits” in investigation at an individual level, may not necessarily yield disadvantages, but even work advantageously, depending on social contexts in groups. This hypothesis could provide a novel insight into our understanding of the biological mechanisms of psychiatric disorders, and a potential explanation that disadvantageous phenotypes associated with DA deficits in psychiatric disorders have remained in humans through evolution.
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Affiliation(s)
- Yoshie Yamaguchi
- Section of Cognition and Learning, Department of Cognitive Science, Primate Research Institute, Kyoto University Inuyama, Japan
| | - Young-A Lee
- Department of Food Science and Nutrition, Catholic University of Daegu Gyeongsan-Si, Korea
| | - Yukiori Goto
- Section of Cognition and Learning, Department of Cognitive Science, Primate Research Institute, Kyoto University Inuyama, Japan
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