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Climbing With a Head-Mounted Display: Dual-Task Costs.

Alexander Woodham¹, Mark Billinghurst¹, William S Helton²

¹University of Canterbury, Christchurch, New Zealand.

|February 12, 2016

Summary

Climbing while using a head-mounted display (HMD) for visual tasks, like recalling words, significantly impairs both climbing ability and memory. This dual-tasking effect highlights the challenges of integrating HMDs into physically demanding activities.

Keywords:

communication exercise head-mounted display physical tasks resource theory

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Area of Science:

Human-Computer Interaction
Occupational Safety
Cognitive Psychology

Background:

Auditory cognitive tasks negatively impact climbing performance and memory recall.
The effects of visual cognitive tasks, particularly using head-mounted displays (HMDs), during climbing are less understood.
HMDs are anticipated for use in emergency response, necessitating research into their effects during physical tasks.

Purpose of the Study:

To investigate the dual-task costs of performing a visual communication task with an HMD while climbing.
To compare the effects of visual versus auditory secondary tasks on climbing and memory.
To assess the impact of HMD use on climbers' performance and cognitive recall.

Main Methods:

A repeated-measures design was used, with climbers performing five conditions: climbing-only, dual-task climbing with HMD (words presented with/without auditory warnings), and seated control with HMD (words presented with/without auditory warnings).
Motion data were collected to analyze movement patterns around HMD word presentations.
Word recall and climbing performance were the primary outcome measures.

Main Results:

Dual-tasking conditions led to decreased climbing performance and word recall, similar to previous auditory task studies.
Participants exhibited slower movement around HMD word presentations.
Physical tasks appear more detrimental to word recall than seated tasks, and visual stimuli may impair climbing more than auditory stimuli.

Conclusions:

Complex physical activities, such as climbing, disrupt memory rehearsal and recall.
Cognitive tasks performed concurrently with physical activity negatively impact physical performance.
It is advisable to avoid HMD tasks requiring memory recall during strenuous physical activities, though future HMDs could offer memory augmentation.