
Fulltext:
64739.pdf
Embargo:
until further notice
Size:
93.19Kb
Format:
PDF
Description:
publisher's version
Publication year
2004Source
International Journal of Psychophysiology, 53, 3, (2004), pp. 239-243ISSN
Publication type
Article / Letter to editor

Display more detailsDisplay less details
Organization
SW OZ DCC SMN
Former Organization
SW OZ NICI BI
SW OZ NICI CO
Journal title
International Journal of Psychophysiology
Volume
vol. 53
Issue
iss. 3
Page start
p. 239
Page end
p. 243
Subject
Cognitive neuroscienceAbstract
Vigilance is assumed to decline with sustained task performance. The EEG-effects during performance on mental tasks, however, cannot be ascribed indisputably to vigilance decline per se. During task performance itself, effects of information processing and vigilance decline may be confounded. In this study, effects of sustained mental effort were studied in the absence of specific information processing, after sustained information processing had taken place, namely after an effortful 70-min intelligence test. Vigilance was determined by means of EEG-measures in a rest condition. Furthermore, behavioral performance was assessed on two different tasks, the traditional Clock test and the SART. After mental effort, theta power in the EEG and errors on the SART were increased. Beta2 power, however, also appeared enhanced. We conclude that sustained mental effort produces an enduring decrease in vigilance, but that some active processing is enhanced at the same time. A second study replicated the EEG-results after mental effort.
This item appears in the following Collection(s)
- Academic publications [227425]
- Electronic publications [107155]
- Faculty of Social Sciences [28413]
Upload full text
Use your RU credentials (u/z-number and password) to log in with SURFconext to upload a file for processing by the repository team.