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Graded decisions in the human brain

Medicine and Health

Graded decisions in the human brain

T. Xie, M. Adamek, et al.

This groundbreaking study by Tao Xie and colleagues explores the dynamics of human decision-making through real-time recording of intracranial neural signals. The research reveals that decisions are graded rather than absolute, with neural activity in the parietal cortex reflecting the gradual accumulation of evidence without a fixed endpoint. Discover the implications of these findings for understanding flexible choice behavior!

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Playback language: English
Abstract
This study investigated whether human decisions are definitive or graded by recording intracranial neural signals during perceptual decisions. Broadband gamma activity, reflecting the decision-making process, ramped up gradually and was graded by accumulated evidence, persisting throughout the process without reaching a definite bound at choice time. This effect was most prominent in the parietal cortex, supporting a graded decision process in humans and an analog framework for flexible choice behavior.
Publisher
Nature Communications
Published On
May 21, 2024
Authors
Tao Xie, Markus Adamek, Hohyun Cho, Matthew A. Adamo, Anthony L. Ritaccio, Jon T. Willie, Peter Brunner, Jan Kubanek
Tags
decision-making
intracranial neural signals
gamma activity
perceptual decisions
parietal cortex
graded decisions
flexible choice behavior

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