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The Joint Effect of Social Comparison and Social Distance on Evaluation of Intertemporal Choice Outcomes in Event-related Potential Studies
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Cardiac cycle affects risky decision-making.

Kenta Kimura1, Noriaki Kanayama1, Kentaro Katahira1

  • 1Human Informatics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.

Biological Psychology
|December 4, 2022
PubMed
Summary
This summary is machine-generated.

Decision-making under uncertainty is influenced by the cardiac cycle. Risky choices were more frequent during systole (heart contraction) than diastole (heart relaxation), suggesting cardiac signals impact risk preference.

Keywords:
Cardiac cycleDecision-makingInteroceptionRisk attitudeUncertainty

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Area of Science:

  • Neuroscience
  • Psychology
  • Cardiology

Background:

  • Decision-making processes are complex and influenced by various physiological factors.
  • The cardiac cycle, comprising systole and diastole, represents a significant physiological rhythm.

Purpose of the Study:

  • To investigate the influence of the cardiac cycle on decision-making under uncertainty.
  • To determine if cardiac afferent signals affect risk-taking behavior.

Main Methods:

  • A gambling experiment was designed to assess decision-making under uncertainty.
  • Participants chose between sure payouts and uncertain options with varying probabilities and monetary values.
  • Stimulus presentation was synchronized with cardiac ventricular systole or diastole.

Main Results:

  • Risk aversion scores were significantly lower during systole compared to diastole for most participants.
  • Increased risk-taking during systole was better explained by altered gambling bias than a change in risk attitude.
  • Cardiac cycle phase influences the propensity for risky decision-making.

Conclusions:

  • The cardiac cycle, specifically the timing of systole and diastole, impacts human decision-making under uncertainty.
  • Natural fluctuations in cardiac afferent signals can modulate risk-taking behavior.
  • These findings highlight a novel physiological influence on cognitive processes.