Effects of mental fatigue on the capacity limits of visual attention

Árpád Csathó, Dimitri Van Der Linden, István Hernádi, Péter Buzás, Gergely Kalmár

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The literature indicates that mental fatigue, due to Time-on-Task (ToT), compromises the ability to ignore distractors. The present study elaborates on this effect by testing whether perceptual load of the target stimuli moderates the ability to ignore distractors under fatigue. Participants (N = 27) performed a visual attention task (an Eriksen flanker task) for 2.5 hours without rest. Target letters were presented at three different perceptual loads and with a peripheral distractor letter. Three target-distractor conditions were tested: congruent, incongruent, and neutral. Results showed that, overall, error rates and reaction times increased with ToT. The detrimental effect of fatigue on performance was most pronounced in the high perceptual load condition. Importantly, however, we also found that fatigue-related ignorance of distractors was compromised in the low perceptual load condition, but not in the medium or high perceptual load condition. This finding is in accordance with the perceptual load theory and refines the knowledge about the declining cognitive performance under fatigue.

Original languageEnglish
Pages (from-to)511-524
Number of pages14
JournalJournal of Cognitive Psychology
Volume24
Issue number5
DOIs
Publication statusPublished - Aug 1 2012

Keywords

  • Mental fatigue
  • Time-on-task
  • Visual attention

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology

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