Task performance and eye activity: predicting behavior relating to cognitive workload.

INTRODUCTION The focus of this study was to examine oculomotor behavioral changes while subjects performed auditory and driving tasks. METHODS There were 13 participants who completed 3 10-min tasks consisting of driving only, the Paced Auditory Serial Addition Task (PASAT) only, and a dual task of both driving and auditory tasks. For each participant, changes in six measures were assessed as a function of cognitive workload, specifically changes in eye activity, including blink frequency, blink duration, fixation frequency, fixation duration, pupil diameter, and horizontal vergence. In addition, deviations in lateral lane position were assessed as a measure of driving behavior. RESULTS Compared with the subjects' behavior in the driving-only task, results showed an increase in blink frequency during the combined driving and auditory task. Also, during the dual task the mean pupil diameter and horizontal vergence increased when subjects performed well in the auditory task in contrast to when the subjects performed poorly. Evidence of visual tunneling or reduced range of scanning and decreases in rearview mirror and odometer glances appeared when subjects performed the driving and auditory dual task. There was no significant change in fixation frequency. However, decreased fixation duration appeared to predict upcoming errors in the auditory task. Pupil diameter changes were significantly higher when performing well on the auditory task than when subjects were performing poorly. CONCLUSION Eye behavior trends reported in this study may provide insight to human behavior corresponding with cognitive workload, which may in turn be utilized to produce reliable workload indicators and applications that predict poor performance in real time.

[1]  G. Westheimer,et al.  Disjunctive eye movements , 1961, The Journal of physiology.

[2]  John A. Stern,et al.  The Eye Blink and Workload Considerations , 1984 .

[3]  W. Brouwer,et al.  Age differences in divided attention in a simulated driving task. , 1988, Journal of gerontology.

[4]  K Ball,et al.  Identifying Correlates of Accident Involvement for the Older Driver , 1991, Human factors.

[5]  J. Stern,et al.  Blinks as an index of cognitive activity during reading , 1991, Integrative physiological and behavioral science : the official journal of the Pavlovian Society.

[6]  C. Wickens,et al.  Workload transition: Implications for individual and team performance. , 1993 .

[7]  D. Schroeder,et al.  Blink Rate: A Possible Measure of Fatigue , 1994, Human factors.

[8]  J. Hoffman,et al.  The role of visual attention in saccadic eye movements , 1995, Perception & psychophysics.

[9]  J. Veltman,et al.  Physiological indices of workload in a simulated flight task , 1996, Biological Psychology.

[10]  Donald L. Fisher,et al.  Driving Simulators: Are They Valid Test Environments for ITS Development? , 1997 .

[11]  F. Yamada.  Frontal midline theta rhythm and eyeblinking activity during a VDT task and a video game: useful tools for psychophysiology in ergonomics. , 1998, Ergonomics.

[12]  Dario D. Salvucci.  An interactive model-based environment for eye-movement protocol analysis and visualization , 2000, ETRA.

[13]  Y C Liu,et al.  Comparative study of the effects of auditory, visual and multimodality displays on drivers' performance in advanced traveller information systems , 2001, Ergonomics.

[14]  Scott Makeig,et al.  Eye Activity Correlates of Workload during a Visuospatial Memory Task , 2001, Hum. Factors.

[15]  J. M. Peter,et al.  The Efficacy of Psychophysiological Measures for Implementing Adaptive Technology , 2001 .

[16]  Glenn F. Wilson,et al.  An Analysis of Mental Workload in Pilots During Flight Using Multiple Psychophysiological Measures , 2002 .

[17]  G. Matthews,et al.  Task-induced fatigue states and simulated driving performance , 2002, The Quarterly journal of experimental psychology. A, Human experimental psychology.

[18]  Christopher D. Wickens,et al.  Multiple resources and performance prediction , 2002 .

[19]  J. Krichmar,et al.  Oculomotor impairment during chronic partial sleep deprivation , 2003, Clinical Neurophysiology.

[20]  A. Muzet,et al.  Effect of sleep deprivation and driving duration on the useful visual field in younger and older subjects during simulator driving , 2003, Vision Research.

[21]  D. Strayer,et al.  Cell phone-induced failures of visual attention during simulated driving. , 2003, Journal of experimental psychology. Applied.

[22]  M. Russo,et al.  Visual neglect: occurrence and patterns in pilots in a simulated overnight flight. , 2004, Aviation, space, and environmental medicine.

[23]  Michael Matessa,et al.  Anticipatory Eye Movements in Interleaving Templates of Human Behavior , 2004, ICCM.

[24]  NAVAL HEALTH RESEARCH CENTER EYE MOVEMENTS DURING VISUAL AND AUDITORY TASK PERFORMANCE , 2004 .

[25]  Matthew Rizzo,et al.  Effects of a Controlled Auditory–Verbal Distraction Task on Older Driver Vehicle Control , 2004 .

[26]  Karl F. Van Orden,et al.  61.2: Eye Movements During Visual and Auditory Task Performance , 2004 .

[27]  J. Leathem,et al.  The Effects of Test Anxiety, Age, Intelligence Level, and Arithmetic Ability on Paced Auditory Serial Addition Test Performance , 2004, Applied neuropsychology.

[28]  Kyosuke Fukuda,et al.  Cognition, blinks, eye-movements, and pupillary movements during performance of a running memory task. , 2005, Aviation, space, and environmental medicine.

[29]  Gregory Belenky,et al.  Oculomotor responses during partial and total sleep deprivation. , 2005, Aviation, space, and environmental medicine.

[31]  Saul Santiago,et al.  Visual perception, psychomotor performance, and complex motor performance during an overnight air refueling simulated flight. , 2005, Aviation, space, and environmental medicine.

[32]  Arthur F Kramer,et al.  Training effects on dual-task performance: are there age-related differences in plasticity of attentional control? , 2005, Psychology and aging.

[33]  J. L. Greig,et al.  Involuntary eye responses as measures of fatigue in US Army Apache aviators. , 2005, Aviation, space, and environmental medicine.