Back to Search
Start Over
Mental fatigue and task control: planning and preparation
- Source :
- Psychophysiology, 37(5), 614-625. Wiley-Blackwell
- Publication Year :
- 2000
-
Abstract
- The effects of mental fatigue on planning and preparation for future actions were examined, using a task switching paradigm. Fatigue was induced by “time on task,” with subjects performing a switch task continuously for 2 hr. Subjects had to alternate between tasks on every second trial, so that a new task set was required on every second trial. Manipulations of response–stimulus intervals (RSIs) were used to examine whether subjects prepared themselves for the task change. Behavioral measurements, event-related potentials (ERPs), and mood questionnaires were used to assess the effects of mental fatigue. Reaction times (RTs) were faster on trials in which no change in task set was required in comparison with switch trials, requiring a new task set. Long RSIs were used efficiently to prepare for the processing of subsequent stimuli. With increasing mental fatigue, preparation processes seemed to become less adequate and the number of errors increased. A clear poststimulus parietal negativity was observed on repetition trials, which reduced with time on task. This attention-related component was less pronounced in switch trials; instead, ERPs elicited in switch trials showed a clear frontal negativity. This negativity was also diminished by time on task. ERP differences between repetition and switch trials became smaller with increasing time on task.
- Subjects :
- DESIGNS
Adult
Male
medicine.medical_specialty
Task switching
CAFFEINE
Adolescent
Cognitive Neuroscience
Mental fatigue
media_common.quotation_subject
CNV
Experimental and Cognitive Psychology
EVENT-RELATED POTENTIALS
Audiology
Electroencephalography
Time on task
behavioral disciplines and activities
time-on-task
Developmental psychology
SPEED-ACCURACY TRADEOFF
Developmental Neuroscience
Event-related potential
response-stimulus interval
Task Performance and Analysis
medicine
Reaction Time
Humans
P300
REACTION-TIME
Biological Psychiatry
media_common
medicine.diagnostic_test
Endocrine and Autonomic Systems
General Neuroscience
ATTENTION
Cognition
task switching
Mental Fatigue
MODEL
Neuropsychology and Physiological Psychology
Mood
Neurology
Female
Psychology
psychological phenomena and processes
ERP
Psychomotor Performance
Vigilance (psychology)
Subjects
Details
- ISSN :
- 00485772
- Volume :
- 37
- Issue :
- 5
- Database :
- OpenAIRE
- Journal :
- Psychophysiology
- Accession number :
- edsair.doi.dedup.....4b2dbd4dd732534748aa2740acd4d4aa