The disengaging brain: Dynamic transitions from cognitive engagement and alcoholism risk

Enrico Amico, Mario Dzemidzic, Brandon G. Oberlin, Claire R. Carron, Jaroslaw Harezlak, Joaquín Goñi, David A. Kareken

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Human functional brain connectivity is usually measured either at “rest” or during cognitive tasks, ignoring life's moments of mental transition. We propose a different approach to understanding brain network transitions. We applied a novel independent component analysis of functional connectivity during motor inhibition (stop signal task) and during the continuous transition to an immediately ensuing rest. A functional network reconfiguration process emerged that: (i) was most prominent in those without familial alcoholism risk, (ii) encompassed brain areas engaged by the task, yet (iii) appeared only transiently after task cessation. The pattern was not present in a pre-task rest scan or in the remaining minutes of post-task rest. Finally, this transient network reconfiguration related to a key behavioral trait of addiction risk: reward delay discounting. These novel findings illustrate how dynamic brain functional reconfiguration during normally unstudied periods of cognitive transition might reflect addiction vulnerability, and potentially other forms of brain dysfunction.

Original languageEnglish (US)
Article number116515
JournalNeuroImage
Volume209
DOIs
StatePublished - Apr 1 2020

ASJC Scopus subject areas

  • Neurology
  • Cognitive Neuroscience

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