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DTSTART:19700308T020000
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DTSTART:19701101T020000
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BEGIN:VEVENT
DTSTAMP:20251016T135148Z
LOCATION:Grand Hall K
DTSTART;TZID=America/Chicago:20251014T163000
DTEND;TZID=America/Chicago:20251014T165000
UID:HFESAM_ASPIRE 2025_sess247_LECT666@linklings.com
SUMMARY:What Makes Vigilance Challenging? Identifying Sources of Workload 
 during Visual Detection.
DESCRIPTION:Fernando Munoz Gomez Andrade (Oregon State University), Yusuke
  Yamani (Old Dominion University), and Jason S. McCarley (Oregon State Uni
 versity)\n\nSubjective workload during vigilance has been reported to incr
 ease while completing difficult tasks. It is unclear, however, the extent 
 to which this effect is consequent of increased vigilance demands (i.e., d
 etecting rare events), increased general task demands (i.e., the need to p
 erform challenging visual discriminations), and increased response demands
  (i.e., the need to execute manual responses). To disambiguate between the
 se sources of workload, participants completed a length-discrimination tas
 k where the difficulty of the task (easy vs. difficult) and signal rate (.
 05; .5; .95) were manipulated between subjects. Workload was estimated thr
 ough the NASA-TLX scale. Analysis suggested similar changes in performance
  over time for the vigilance task (.05 signal rate) and standard signal de
 tection task (.5 signal rate), and higher costs in performance for the SAR
 T condition (.95 signal rate). The effect of task difficulty was more nota
 ble for vigilance tasks. For easier tasks, ratings increased with response
  demands, particularly for the frustration and performance dimensions, alt
 hough physical load was invariant across conditions. While completing more
  difficult paradigms, mental load was elevated at increased vigilance dema
 nds, with similar trends for the performance and effort subscales. Results
  suggest a more emphatic role of vigilance demands on workload at increase
 d difficulty levels.\n\nTrack: Perception and Performance\n\nSession Chair
 s: Jung Hyup Kim (University of Missouri) and Xingjian Ma (University of W
 isconsin - Madison)\n\n
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