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Shared striatal activity in decisions to satisfy curiosity and hunger at the risk of electric shocks
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Shared striatal activity in decisions to satisfy curiosity and hunger at the risk of electric shocks
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Journal Article
Shared striatal activity in decisions to satisfy curiosity and hunger at the risk of electric shocks
2020
Overview
Curiosity is often portrayed as a desirable feature of human faculty. However, curiosity may come at a cost that sometimes puts people in harmful situations. Here, using a set of behavioural and neuroimaging experiments with stimuli that strongly trigger curiosity (for example, magic tricks), we examine the psychological and neural mechanisms underlying the motivational effect of curiosity. We consistently demonstrate that across different samples, people are indeed willing to gamble, subjecting themselves to electric shocks to satisfy their curiosity for trivial knowledge that carries no apparent instrumental value. Also, this influence of curiosity shares common neural mechanisms with that of hunger for food. In particular, we show that acceptance (compared to rejection) of curiosity-driven or incentive-driven gambles is accompanied by enhanced activity in the ventral striatum when curiosity or hunger was elicited, which extends into the dorsal striatum when participants made a decision.
In two functional MRI studies in which participants pay for the revelation of the solutions to magic tricks and trivia questions by risking electric shocks, Lau et al. show that curiosity-driven decisions involve activity in the striatum.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
/ Behavior
/ Biomedical and Life Sciences
/ Corpus Striatum - diagnostic imaging
/ Corpus Striatum - physiology
/ Decision Making - physiology
/ Dopamine
/ Exploratory Behavior - physiology
/ Female
/ Food
/ Functional magnetic resonance imaging
/ Gambling - diagnostic imaging
/ Humans
/ Hunger
/ Male
/ Nerve Net - diagnostic imaging
/ Nucleus Accumbens - diagnostic imaging
/ Nucleus Accumbens - physiology
/ Personality and Social Psychology
/ Ventral Striatum - diagnostic imaging
