A5060566568- Neural and Behavioral Psychology Studies
- Linguistics and Discourse Analysis
- Information Technology and Learning
- Evolutionary Psychology and Human Behavior
- Neural dynamics and brain function
- Action Observation and Synchronization
- Neuroendocrine regulation and behavior
- Psychology of Moral and Emotional Judgment
- Face Recognition and Perception
- Psychological and Educational Research Studies
- Neurotransmitter Receptor Influence on Behavior
- Glaucoma and retinal disorders
- Ocular Surface and Contact Lens
- Evolutionary Game Theory and Cooperation
- French Urban and Social Studies
- Mental Health Research Topics
- Functional Brain Connectivity Studies
- Child and Animal Learning Development
- Social and Intergroup Psychology
- Animal Behavior and Reproduction
- Categorization, perception, and language
- Leadership, Behavior, and Decision-Making Studies
- Political and Social Issues
- Decision-Making and Behavioral Economics
- Multiple Sclerosis Research Studies
Champalimaud Foundation
2018-2023
Centre de Recherche en Neurosciences de Lyon
2021-2023
Inserm
2017-2023
Radboud University Nijmegen
2017-2022
Centre Hospitalier Le Vinatier
2021
Institut des Sciences Cognitives
2016-2019
Université Claude Bernard Lyon 1
2012-2018
Centre National de la Recherche Scientifique
2012-2018
Cognitive Neuroimaging Lab
2018
Health First
2017
Dopamine is central to a number of cognitive functions and brain disorders. Given the cost neurochemical imaging in humans, behavioural proxy measures dopamine have gained popularity past decade, such as spontaneous eye blink rate (sEBR). Increased sEBR commonly associated with increased function based on pharmacological evidence patient studies. Yet, this hypothesis has not been validated using vivo humans. To fill gap, we measured striatal synthesis capacity [18 F]DOPA PET 20 participants...
Background Pathological gambling (PG) is an impulse control disorder characterized by excessive monetary risk seeking in the face of negative consequences. We used tools from field behavioral economics to refine our description risk-taking behavior pathological gamblers. This theoretical framework allowed us confront two hypotheses: (1) gamblers distort winning probabilities more than controls; and (2) merely overweight whole probability range. Method Eighteen 20 matched healthy participants...
The Iowa Gambling Task (IGT) is one of the most common paradigms used to assess decision-making and executive functioning in neurological psychiatric disorders. Several reinforcement-learning (RL) models were recently proposed refine qualitative quantitative inferences that can be made about these processes based on IGT data. Yet, do not account for complex exploratory patterns which characterize participants' behavior task. Using a dataset more than 500 subjects, we demonstrate existence...
Accurate assessment of environmental controllability enables individuals to adaptively adjust their behavior—exploiting rewards when desirable outcomes are contingent upon actions and minimizing costly deliberation inconsequential. However, it remains unclear how estimation changes from childhood adulthood. Ninety participants (ages 8–25) completed a task that covertly alternated between controllable uncontrollable conditions, requiring them explore different discover the current degree...
Ubiquitous in the animal kingdom, dominance hierarchies emerge through social competition and underlie control of resources. Confronting disruptive influence socioeconomic inequalities, human populations tend to split into groups who legitimize existing condemn them. Here, we hypothesized that variations neural sensitivity ranks partly underpins this ideological split, as measured by orientation scale (SDO). Following a competitive task used induce representations about three opponents...
In young adults, individual differences in working memory (WM) contribute to reinforcement learning (RL). Age-related RL changes, however, are mostly attributed decreased reward prediction-error (RPE) signaling. Here, we investigated the contribution of WM (18-35) and older (≥65) adults. Because supports maintenance across a limited timescale, only expected relation between with short delays stimulus repetitions. Our results demonstrated better than long delays. A week later, long-delay...
Abstract Learning one’s status in a group is fundamental process building social hierarchies. Although animal studies suggest that serotonin (5-HT) signaling modulates learning hierarchies, direct evidence humans lacking. Here we determined the relationship between transporter (SERT) availability and brain systems engaged ranks combining computational approaches with simultaneous PET-fMRI acquisition healthy males. We also investigated link SERT activity non-social control condition...
Abstract Dopamine is central to a number of cognitive functions and brain disorders. Given the cost neurochemical imaging in humans, behavioral proxy measures dopamine have gained popularity past decade, such as spontaneous eye blink rate (sEBR). Increased sEBR commonly associated with increased function based on pharmacological evidence patient studies. Yet, this hypothesis has not been validated using vivo humans. In order fill gap, we measured striatal synthesis capacity [ 18 F]DOPA PET...
Abstract Estimating the controllability of environment enables agents to better predict upcoming events and decide when engage controlled action selection. How does human brain estimate controllability? Trial-by-trial analysis choices, decision times, neural activity in an explore-and-predict task demonstrate that humans solve this problem by comparing predictions “actor” model with those a reduced “spectator” their environment. Neural BOLD responses within striatal medial prefrontal areas...
Abstract Epistemic curiosity (EC) is a cornerstone of human cognition that contributes to the actualization our cognitive potential by stimulating myriad information-seeking behaviours. Yet, its fundamental relationship with uncertainty remains poorly understood, which limits ability predict within- and between-individual variability in willingness acquire knowledge. Here, two-step stochastic trivia quiz designed induce manipulate answer provided behavioural neural evidence for an...
Accurate assessment of environmental controllability enables individuals to adaptively adjust their behavior — exploiting rewards when desirable outcomes are contingent upon actions and minimizing costly deliberation inconsequential. However, it remains unclear how estimation changes from childhood adulthood. Ninety participants (ages 8-25) completed a task that covertly alternated between controllable uncontrollable conditions, requiring them explore different discover the current degree...