title: Single-task fMRI overlap predicts concurrent multitasking interference.
abstract: There is no consensus regarding the origin of behavioral interference that occurs during concurrent multitasking. Some evidence points toward a multitasking locus in the brain, while other results imply that interference is the consequence of task interactions in several brain regions. To investigate this issue, we conducted a functional MRI (fMRI) study consisting of three component tasks, which were performed both separately and in combination. The results indicated that no specific multitasking area exists. Instead, different patterns of activation across conditions could be explained by assuming that the interference is a result of task interactions. Additionally, similarity in single-task activation patterns correlated with a decrease in accuracy during dual-task conditions. Taken together, these results support the view that multitasking interference is not due to a bottleneck in a single "multitasking" brain region, but is a result of interactions between concurrently running processes.
authors.affiliation: Dept. of Artificial Intelligence, University of Groningen, The Netherlands. Electronic address: m.nijboer@rug.nl.
authors.forename: Menno
authors.initials: M
authors.lastname: Nijboer
authors.affiliation: Dept. of Artificial Intelligence, University of Groningen, The Netherlands; Dept. of Psychology, Carnegie Mellon University, United States.
authors.forename: Jelmer
authors.initials: J
authors.lastname: Borst
authors.affiliation: Dept. of Psychology, University of Groningen, The Netherlands.
authors.forename: Hedderik
authors.initials: H
authors.lastname: van Rijn
authors.affiliation: Dept. of Artificial Intelligence, University of Groningen, The Netherlands.
authors.forename: Niels
authors.initials: N
authors.lastname: Taatgen
mesh_terms: D000293:Adolescent; D000328:Adult; D001288:Attention / Q000502:physiology*; D001931:Brain Mapping / Q000379:methods*; D056344:Executive Function / Q000502:physiology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D011597:Psychomotor Performance / Q000502:physiology*; D055815:Young Adult
keywords: Dual-task; Interference; Multitasking; fMRI