Is Hemispherically Specialized Response Bias Frontal Lobe Dependent?
-
1
University of Quebec in Montreal, Canada
-
2
Montreal Childrens Hospital , Psychology Department, Canada
It is widely believed that errors of commission and omission are due to activations of the left and right hemispheres respectively, in the frontal lobes. We tested 30 adolescents and adults having incurred a unilateral focal telencephalic lesion in childhood as well as 35 age and gender matched normal control participants with a computerized simulation of multitask occupational executive activities (SAVR: Guimond et al 2006, 2008) generating high frequencies of errors of commission and of omission. There were 16 participants with a left hemisphere lesion and 14 with a right lesion. Of these, 12 participants had a frontal lesion and 18 a non frontal lesion. Lesion groups were matched for education, age at test, gender and hand preference. Age of lesion onset varied as a function of group, but did not modulate the effects of interest: -except that total errors were a function of early age of onset (the inverse Kennard effect) independently of age at test. The patients presented more omissions and commissions than controls. The left lesion group was omissive and the right commissive, the interaction being significant. This response bias was observed equally in the frontal lobe lesioned group and in the non-frontal lobe lesioned group.
Conference:
The 20th Annual Rotman Research Institute Conference, The frontal lobes, Toronto, Canada, 22 Mar - 26 Mar, 2010.
Presentation Type:
Poster Presentation
Topic:
Cognitive Neuroscience
Citation:
Braun
C,
Daigneault
S and
Guimond
A
(2010). Is Hemispherically Specialized Response Bias Frontal Lobe Dependent?.
Conference Abstract:
The 20th Annual Rotman Research Institute Conference, The frontal lobes.
doi: 10.3389/conf.fnins.2010.14.00110
Copyright:
The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers.
They are made available through the Frontiers publishing platform as a service to conference organizers and presenters.
The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated.
Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed.
For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions.
Received:
29 Jun 2010;
Published Online:
29 Jun 2010.
*
Correspondence:
A. Guimond, University of Quebec in Montreal, Montréal, Canada, guimond.anik@courrier.uqam.ca