From the Brain's Encoding of Input Dynamics to Its Behavior: Neural Dynamics Shape Bias in Decision Making

Overview

Journal Commun Biol

Specialty Biology

Date 2024 Nov 20

PMID 39562707

Authors

Angelika Wolman

Stephan Lechner

Lorenzo Lucherini Angeletti

Josh Goheen

Georg Northoff

Affiliations

Soon will be listed here.

Abstract

The human brain is tightly connected to the individual's environment and its input dynamics. How the dynamics of periodic environmental stimuli influence neural activity and subsequent behavior via neural entrainment or alignment is not fully clear yet, though. This study explores how periodic environmental stimuli influence neural activity and behavior. EEG data was collected during a Go-NoGo task with a periodic intertrial interval (ITI) of 1.3 s (0.769 Hz). Results showed that the task's temporal structure increased power spectrum activity at 0.769 Hz, which showed high intersubject variability. Higher task-periodicity effects were linked to stronger phase-based intertrial coherence (ITC) and reduced neural complexity, as measured by lower Lempel-Ziv Complexity (LZC). Additionally, higher periodicity in the power spectrum correlated with faster reaction times and stronger response bias. We conclude that the encoding of the inputs' dynamics into the brains power spectrum shapes subsequent behavior, e.g., RT and response bias, through reducing neural complexity.

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