Eye movement characteristics reflected fatigue development in both young and elderly individuals.

Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: MEDLINE

Original Publication: London : Nature Publishing Group, copyright 2011-

Task Performance and Analysis*; Blinking/*physiology ; Fatigue/*diagnosis ; Saccades/*physiology; Adult ; Age Factors ; Computer User Training ; Diagnostic Self Evaluation ; Fatigue/physiopathology ; Female ; Humans ; Male ; Middle Aged ; Time Factors

Fatigue can develop during prolonged computer work, particularly in elderly individuals. This study investigated eye movement characteristics in relation to fatigue development. Twenty young and 18 elderly healthy adults were recruited to perform a prolonged functional computer task while their eye movements were recorded. The task lasted 40 minutes involving 240 cycles divided into 12 segments. Each cycle consisted of a sequence involving memorization of a pattern, a washout period, and replication of the pattern using a computer mouse. The participants rated their perceived fatigue after each segment. The mean values of blink duration (BD) and frequency (BF), saccade duration (SCD) and peak velocity (SPV), pupil dilation range (PDR), and fixation duration (FD) along with the task performance based on clicking speed and accuracy, were computed for each task segment. An increased subjective evaluation of fatigue suggested the development of fatigue. BD, BF, and PDR increased whereas SPV and SCD decreased over time in the young and elderly groups. Longer FD, shorter SCD, and lower task performance were observed in the elderly compared with the young group. The present findings provide a viable approach to develop a computational model based on oculometrics to track fatigue development during computer work.

Erratum in: Sci Rep. 2020 Feb 27;10(1):3964. (PMID: 32103125)

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Date Created: 20180905 Date Completed: 20191025 Latest Revision: 20200228

20221213

PMC6120880

10.1038/s41598-018-31577-1

30177693