The P300 component of the event-related brain potential and mental effort
The P300 component of the ERP has been gaining importance as an index of information processing and cognitive activity and as a measure of workload. This study was conducted to test whether or not P300 reflects changes of effort accompanying a graduation of the task demand. The event-related brain p...
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| Veröffentlicht in: | Ergonomics 1988-08, Vol.31 (8), p.1127-1137 |
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| creator | ULLSPERGER, P. METZ, A.-M. GILLE, H.-G. |
| description | The P300 component of the ERP has been gaining importance as an index of information processing and cognitive activity and as a measure of workload. This study was conducted to test whether or not P300 reflects changes of effort accompanying a graduation of the task demand. The event-related brain potentials were elicited directly by task stimuli of a reference-task paradigm. Eleven healthy subjects had to detect omitted digits in tasks of randomly ordered digits varying in their number (categories I to V). Tasks of categories II to V were equiprobable (5% each) and embedded in a sequence of the reference tasks (I). The electroencephalogram was recorded from leads Fz, Cz, and Pz. Reaction time and rated effort confirmed a graduation of task demands from I towards V. The P300 amplitude increased from category II to V and was related linearily to the rated effort. It is proposed that an effort-contingent task evaluation on the basis of physical cues takes place. |
| doi_str_mv | 10.1080/00140138808966752 |
| format | Article |
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Human factors</subject><subject>Evoked potentials</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Humans</subject><subject>Male</subject><subject>Mental processes</subject><subject>Mental Processes - physiology</subject><subject>Occupational psychology</subject><subject>Physical Exertion</subject><subject>Psychology. Psychoanalysis. Psychiatry</subject><subject>Psychology. 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| source | MEDLINE; Periodicals Index Online; Taylor & Francis Journals Complete |
| subjects | Adult Biological and medical sciences Electroencephalography Ergonomics. Human factors Evoked potentials Female Fundamental and applied biological sciences. Psychology Humans Male Mental processes Mental Processes - physiology Occupational psychology Physical Exertion Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Psychophysiology Reaction Time Space life sciences Work |
| title | The P300 component of the event-related brain potential and mental effort |
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