TY - JOUR
T1 - Conflict monitoring and adjustment in the task-switching paradigm under different memory load conditions
T2 - An ERP/sLORETA analysis
AU - Deng, Yuqin
AU - Wang, Yan
AU - Ding, Xiaoqian
AU - Tang, Yi Yuan
N1 - Publisher Copyright:
Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.
PY - 2015
Y1 - 2015
N2 - The aim of the present study was to examine electrophysiological and behavioral changes caused by different memory loads in a task-switching paradigm. A total of 31 healthy individuals were subjected to a task, in which the stimulus-response reversal paradigm was combined with the task-switching paradigm. The event-related potentials were recorded and the N2 component, an index of conflict processing, was measured. In addition, the neural sources of N2 were further analyzed by standardized low-resolution brain electromagnetic tomography. The event-related potential results showed that high memory load triggered a higher N2 mean amplitude. Moreover, the standardized lowresolution brain electromagnetic tomography data showed that high memory load caused an increase in current densities at the anterior cingulate cortex and the prefrontal cortex in the task-switching paradigm. In summary, our findings provide electrophysiological evidence to interpret possible influences of memory loads on conflict monitoring and modulation during the task switching. These results imply that the working memory load overrules the influence of taskswitching performance on the intensification of cognitive control.
AB - The aim of the present study was to examine electrophysiological and behavioral changes caused by different memory loads in a task-switching paradigm. A total of 31 healthy individuals were subjected to a task, in which the stimulus-response reversal paradigm was combined with the task-switching paradigm. The event-related potentials were recorded and the N2 component, an index of conflict processing, was measured. In addition, the neural sources of N2 were further analyzed by standardized low-resolution brain electromagnetic tomography. The event-related potential results showed that high memory load triggered a higher N2 mean amplitude. Moreover, the standardized lowresolution brain electromagnetic tomography data showed that high memory load caused an increase in current densities at the anterior cingulate cortex and the prefrontal cortex in the task-switching paradigm. In summary, our findings provide electrophysiological evidence to interpret possible influences of memory loads on conflict monitoring and modulation during the task switching. These results imply that the working memory load overrules the influence of taskswitching performance on the intensification of cognitive control.
KW - Conflict monitoring
KW - Event-related potentials
KW - Memory load
KW - Standardized low-resolution brain electromagnetic tomography
KW - Task-switching paradigm
UR - http://www.scopus.com/inward/record.url?scp=84926087164&partnerID=8YFLogxK
U2 - 10.1097/WNR.0000000000000310
DO - 10.1097/WNR.0000000000000310
M3 - Article
C2 - 25569792
AN - SCOPUS:84926087164
SN - 0959-4965
VL - 26
SP - 124
EP - 130
JO - NeuroReport
JF - NeuroReport
IS - 3
ER -