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Trait Impulsivity Associated With Altered Resting-State Functional Connectivity Within the Somatomotor Network.pdf (2.27 MB)

Trait impulsivity associated with altered resting-state functional connectivity within the somatomotor network

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posted on 2023-06-09, 22:19 authored by Aleksandra Herman, Hugo CritchleyHugo Critchley, Dora Duka
Knowledge of brain mechanisms underlying self-regulation can provide valuable insights into how people regulate their thoughts, behaviors, and emotional states, and what happens when such regulation fails. Self-regulation is supported by coordinated interactions of brain systems. Hence, behavioral dysregulation, and its expression as impulsivity, can be usefully characterized using functional connectivity methodologies applied to resting brain networks. The current study tested whether individual differences in trait impulsivity are reflected in the functional architecture within and between resting-state brain networks. Thirty healthy individuals completed a self-report measure of trait impulsivity and underwent resting-state functional magnetic resonance imaging. Using Probabilistic Independent Components Analysis in FSL MELODIC, we identified across participants 10 networks of regions (resting-state networks) with temporally correlated time courses. We then explored how individual expression of these spatial networks covaried with trait impulsivity. Across participants, we observed that greater self-reported impulsivity was associated with decreased connectivity of the right lateral occipital cortex (peak mm 46/-70/16, FWE 1-p = 0.981) with the somatomotor network. No supratheshold differences were observed in between-network connectivity. Our findings implicate the somatomotor network, and its interaction with sensory cortices, in the control of (self-reported) impulsivity. The observed “decoupling” may compromise effective integration of early perceptual information (from visual and somatosensory cortices) with behavioral control programs, potentially resulting in negative consequences.

History

Publication status

  • Published

File Version

  • Published version

Journal

Frontiers in Behavioral Neuroscience

ISSN

1662-5153

Publisher

Frontiers Media

Issue

a111

Volume

14

Page range

1-9

Event location

Switzerland

Department affiliated with

  • BSMS Neuroscience Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2020-12-02

First Open Access (FOA) Date

2020-12-02

First Compliant Deposit (FCD) Date

2020-12-01

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