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Vigilance to Spatialized Auditory Displays: Initial Assessment of Performance and Workload.

Eric T Greenlee¹, Lucas J Hess¹, Brian D Simpson²

¹Texas Tech University, Lubbock, TX, USA.

|December 1, 2022

Summary

Auditory spatial discrimination tasks can lead to vigilance decrements, potentially impairing performance and safety in applications relying on spatial auditory displays. This vigilance decrement was more pronounced than in temporal discrimination tasks.

Keywords:

audition auditory displays eye tracking mental workload vigilance

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Area of Science:

Human-Computer Interaction
Auditory Perception
Cognitive Psychology

Background:

Spatial auditory displays are increasingly used in vigilance-critical applications like collision avoidance.
The impact of vigilance decrements on spatial auditory discrimination performance remains under-researched.

Purpose of the Study:

To evaluate human performance and workload in an auditory vigilance task.
To compare spatial versus temporal auditory discrimination under vigilance conditions.

Main Methods:

Participants performed a 40-minute auditory vigilance task under either spatial or temporal discrimination conditions.
Performance metrics included correct detections and false alarms.
Workload was assessed using NASA-TLX ratings and pupil diameter.

Main Results:

Vigilance decrements (declines in performance) were observed in both conditions.
Spatial discrimination led to more frequent false alarms compared to temporal discrimination.
No significant differences in workload were found between the two conditions.

Conclusions:

Auditory spatial discrimination tasks can induce vigilance decrements, potentially leading to poorer performance than temporal discrimination tasks.
Vigilance decrements may compromise performance and safety in systems using spatial auditory displays.