title: Cognitive-motor dual-task interference: A systematic review of neural correlates.
abstract: Cognitive-motor interference refers to dual-tasking (DT) interference (DTi) occurring when the simultaneous performance of a cognitive and a motor task leads to a percentage change in one or both tasks. Several theories exist to explain DTi in humans: the capacity-sharing, the bottleneck and the cross-talk theories. Numerous studies investigating whether a specific brain locus is associated with cognitive-motor DTi have been conducted, but not systematically reviewed. We aimed to review the evidences on brain activity associated with the cognitive-motor DT, in order to better understand the neurological basis of the CMi. Results were reported according to the technique used to assess brain activity. Twenty-three articles met the inclusion criteria. Out of them, nine studies used functional magnetic resonance imaging to show an additive, under-additive, over- additive, or a mixed activation pattern of the brain. Seven studies used near-infrared spectroscopy, and seven neurophysiological instruments. Yet a specific DT locus in the brain cannot be concluded from the overall current literature. Future studies are warranted to overcome the shortcomings identified.
authors.affiliation: Department of Medical Sciences, Surgical and Advanced Technologies G.F. Ingrassia, Section of Neurosciences, University of Catania, Italy; REVAL-Rehabilitation Research Centre, BIOMED-Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium. Electronic address: carmela.leone@uhasselt.be.
authors.forename: Carmela
authors.initials: C
authors.lastname: Leone
authors.affiliation: REVAL-Rehabilitation Research Centre, BIOMED-Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.
authors.forename: Peter
authors.initials: P
authors.lastname: Feys
authors.affiliation: REVAL-Rehabilitation Research Centre, BIOMED-Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium; IPEM-Institute of Psychoacoustics and Electronic Music, Faculty of Arts and Philosophy, Ghent University, Ghent, Belgium.
authors.forename: Lousin
authors.initials: L
authors.lastname: Moumdjian
authors.affiliation: Department of Medical Sciences, Surgical and Advanced Technologies G.F. Ingrassia, Section of Neurosciences, University of Catania, Italy.
authors.forename: Emanuele
authors.initials: E
authors.lastname: D'Amico
authors.affiliation: Department of Medical Sciences, Surgical and Advanced Technologies G.F. Ingrassia, Section of Neurosciences, University of Catania, Italy.
authors.forename: Mario
authors.initials: M
authors.lastname: Zappia
authors.affiliation: Department of Medical Sciences, Surgical and Advanced Technologies G.F. Ingrassia, Section of Neurosciences, University of Catania, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Patti
mesh_terms: D001921:Brain; D001931:Brain Mapping; D003071:Cognition; D006801:Humans; D008279:Magnetic Resonance Imaging
keywords: Cognitive-motor interference; Dual-task interference; Dual-tasking; Neural correlates; Neuroimaging; Neurophysiology