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VERSION:2.0
PRODID:-//Memento EPFL//
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SUMMARY:BMI Seminar // Christian Ruff: Stress changes risk-taking by alter
 ing Bayesian magnitude coding in parietal cortex
DTSTART:20240228T121500
DTEND:20240228T131500
DTSTAMP:20260406T121142Z
UID:7bbe453c4d1c5b09aa812bf6b942a6edea7f017f22f00a28130690b1
CATEGORIES:Conferences - Seminars
DESCRIPTION:Christian Ruff\, University of Zurich\nAcute stress is an inev
 itable aspect of life\, with long-lasting consequences for physical and fi
 nancial well-being. Previous research documents a link between acute stres
 s and altered risk preference\, with suggestions that these behavioral eff
 ects of stress may contribute to the perpetuation of poverty. However\, de
 spite ample research\, little is known about the neurocognitive processes 
 that translate stress into altered risky decision-making. In my talk\, I w
 ill present a recent research line in my lab that sheds light on these pro
 cesses. Based on our recent findings that risk-taking can originate from n
 oisy and biased perceptual processing of payoffs (Garcia et al.\, 2023\, N
 ature Human Behavior)\, we investigated how laboratory-induced stress chan
 ges distinct aspects of these processes -  specifically\, either noise in
  sensory representation or prior beliefs. Importantly\, we find with fMRI 
 and population coding models that changes in these cognitive variables rel
 ate directly to how numerosities are represented in the parietal magnitude
  processing system. Our results therefore suggest a mechanistic pathway by
  which stress effects on neural function can lead to changes in risk-takin
 g.\n 
LOCATION:SV 1717 https://plan.epfl.ch/?room==SV%201717 https://epfl.zoom.u
 s/j/64813563657
STATUS:CONFIRMED
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