How dynamic is interhemispheric interaction? Effects of task switching on the across-hemisphere advantage.

Brain and Cognition
Suzanne E Welcome, Christine Chiarello

Abstract

Interaction between the cerebral hemispheres may allow both hemispheres to contribute their processing resources in order to cope efficiently with complex tasks [Banich, M. (1998). The missing link: the role of interhemispheric interaction in attentional processing. Brain and Cognition, 36, 128-157]. The current study investigated whether the benefits of interhemispheric interaction arise because of top-down knowledge about the task built up over the course of a block of trials or because of the processing demands present in a single trial. Participants performed a less computationally complex physical identity task and a more complex adding task on within-visual field and across-visual field trials. Task differences in interhemispheric interaction were compared between the blocked and mixed conditions to investigate whether frequent task switches altered the pattern of interhemispheric resource recruitment. A similar interaction between task difficulty and trial type (across- or within-visual field presentation) was obtained for both the blocked and mixed conditions. The degree of task-dependency of interhemispheric interaction was not altered in the mixed condition. This finding supports the view that interhemispheric interac...Continue Reading

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Citations

Jan 18, 2013·Neural Plasticity·Naoyuki TakeuchiShin-Ichi Izumi
Dec 3, 2011·Brain and Cognition·Sebastian OcklenburgChristian Beste
May 3, 2011·Behavioural Brain Research·Lisette J van der Knaap, Ineke J M van der Ham
Dec 10, 2015·Frontiers in Human Neuroscience·Stijn BijttebierCornelis van Heeringen
Jun 20, 2015·Behavioural Neurology·Saleh M H MohamedJaap J van der Meere
Aug 28, 2016·Brain and Cognition·Alfredo SpagnaMaria Casagrande
Aug 13, 2017·Brain Structure & Function·René WesterhausenKristine B Walhovd
Jul 18, 2017·Frontiers in Computational Neuroscience·Anna L MangiaAngelo Cappello
Jan 22, 2019·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Alfredo SpagnaJin Fan
Sep 17, 2019·NeuroImage·Petri ToiviainenVinoo Alluri

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