Different activation dynamics in multiple neural systems during simulated driving.

TitleDifferent activation dynamics in multiple neural systems during simulated driving.
Publication TypeJournal Article
Year of Publication2002
AuthorsCalhoun VD, Pekar JJ, McGinty VB, Adali T, Watson TD, Pearlson GD
JournalHuman brain mapping
Volume16
Issue3
Pagination158-67
Date Published2002 Jul
Abstract

Driving is a complex behavior that recruits multiple cognitive elements. We report on an imaging study of simulated driving that reveals multiple neural systems, each of which have different activation dynamics. The neural correlates of driving behavior are identified with fMRI and their modulation with speed is investigated. We decompose the activation into interpretable pieces using a novel, generally applicable approach, based upon independent component analysis. Some regions turn on or off, others exhibit a gradual decay, and yet others turn on transiently when starting or stopping driving. Signal in the anterior cingulate cortex, an area often associated with error monitoring and inhibition, decreases exponentially with a rate proportional to driving speed, whereas decreases in frontoparietal regions, implicated in vigilance, correlate with speed. Increases in cerebellar and occipital areas, presumably related to complex visuomotor integration, are activated during driving but not associated with driving speed.

Alternate JournalHum Brain Mapp