Attention lapses and behavioural microsleeps during tracking,psychomotor vigilance,and dual tasks |
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| Institution: | 1. Tromsø Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway;2. Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway;3. Division of Diagnostic Services, University Hospital of North Norway, Tromsø, Norway;4. Department of Medical Biology, UiT The Arctic University of Norway, Tromsø, Norway;1. Department of Physical Therapy and Rehabilitation Science, School of Health Professions, University of Kansas Medical Center, Kansas City KS, United States;2. Department of Physical Therapy and Rehabilitation Science, School of Medicine, University of Maryland Baltimore, Baltimore MD, United States;3. Department of Neurology, School of Medicine, University of Kansas Medical Center, Kansas City KS, United States;4. Department of Exercise Physiology, Faculty of Physical Education & Sport Sciences, University of Tehran, Tehran, Iran;5. Office of the Dean, School of Health Professions, University of Kansas Medical Center, Kansas City KS, United States;1. Department of Psychology, Yale University, USA;2. Interdepartmental Neuroscience Program, Yale University, USA;3. Department of Diagnostic Radiology, Yale University School of Medicine, USA;4. Department of Neurosurgery, Yale University School of Medicine, USA;5. Department of Neurobiology, Yale University School of Medicine, USA |
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| Abstract: | This study examined the incidence of attention lapses and microsleeps under contrasting levels of task complexity during three tasks: PVT, 2-D tracking and a dual task combining the two. More attention lapses per participant (median 15 vs. 3; range 1–74 vs. 0–76, p = 0.001), with the greatest increase with time spent-on-task (p = 0.002), were evident on the more cognitively-demanding dual task than on the PVT. Conversely, fewer microsleeps (median 0 vs. 0; range 0–1 vs. 0–18, p = 0.022) occurred during the more complex task compared to the tracking task. An increase in microsleep rate with time spent-on-task (p = 0.035) was evident during the tracking task but not the dual task. These results indicate that the higher cognitive load, associated with an increase in task complexity, increased the likelihood of attention lapses, while a reduction in task complexity increased the likelihood of microsleeps. |
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| Keywords: | Arousal Attention lapse Behavioural microsleep Psychomotor vigilance task Resource depletion Task complexity Tracking |
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