{"title":"Heart rate changes related to risky selections and outcomes in rat gambling tasks.","authors":"Fumiya Fukushima, Atsushi Tamura, Nahoko Kuga, Takuya Sasaki","doi":"10.1016/j.jphyss.2025.100022","DOIUrl":null,"url":null,"abstract":"<p><p>Risk-taking behavior is crucial to increase potential outcomes and alter arousal states in the brain and body represented by heart rates. In this study, we monitored changes in heart rate as rats performed a 50:50 gambling task in which they selected either a certain outcome with 100 % probability (sure option) or a double outcome with 50 % probability (risky option). When rats selected risky options, they exhibited significantly greater decreases in their heart rates before selection than when they selected certain options. In addition, we observed significantly larger increases in heart rates when the rats recognized larger outcomes after selecting the risky options than the sure options. Similar dynamic changes in heart rates were observed in a 25:75 gambling condition with different reward magnitudes and probabilities. These results demonstrate that animals can dynamically alter their heart rates in response to risky selection and outcomes.</p>","PeriodicalId":16832,"journal":{"name":"Journal of Physiological Sciences","volume":"75 2","pages":"100022"},"PeriodicalIF":2.6000,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12018179/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Physiological Sciences","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/j.jphyss.2025.100022","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSIOLOGY","Score":null,"Total":0}
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Abstract
Risk-taking behavior is crucial to increase potential outcomes and alter arousal states in the brain and body represented by heart rates. In this study, we monitored changes in heart rate as rats performed a 50:50 gambling task in which they selected either a certain outcome with 100 % probability (sure option) or a double outcome with 50 % probability (risky option). When rats selected risky options, they exhibited significantly greater decreases in their heart rates before selection than when they selected certain options. In addition, we observed significantly larger increases in heart rates when the rats recognized larger outcomes after selecting the risky options than the sure options. Similar dynamic changes in heart rates were observed in a 25:75 gambling condition with different reward magnitudes and probabilities. These results demonstrate that animals can dynamically alter their heart rates in response to risky selection and outcomes.
期刊介绍：
The Journal of Physiological Sciences publishes peer-reviewed original papers, reviews, short communications, technical notes, and letters to the editor, based on the principles and theories of modern physiology and addressed to the international scientific community. All fields of physiology are covered, encompassing molecular, cellular and systems physiology. The emphasis is on human and vertebrate physiology, but comparative papers are also considered. The process of obtaining results must be ethically sound.
Fields covered:
Adaptation and environment
Autonomic nervous function
Biophysics
Cell sensors and signaling
Central nervous system and brain sciences
Endocrinology and metabolism
Excitable membranes and neural cell physiology
Exercise physiology
Gastrointestinal and kidney physiology
Heart and circulatory physiology
Molecular and cellular physiology
Muscle physiology
Physiome/systems biology
Respiration physiology
Senses.
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