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Towards an Objective Measure of Presence: Examining Startle Reflexes in a Commercial Virtual Reality Game

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PubDate: October 2019

Teams: Reutlingen University,Sheffield Hallam University

Writers: Johannes Schirm;Gabriela Tullius;Jacob Habgood

PDF: Towards an Objective Measure of Presence: Examining Startle Reflexes in a Commercial Virtual Reality Game

Abstract

A large body of literature is concerned with models of presence-the sensory illusion of being part of a virtual scene-but there is still no general agreement on how to measure it objectively and reliably. For the presented study, we applied contemporary theory to measure presence in virtual reality. Thirty-seven participants explored an existing commercial game in order to complete a collection task. Two startle events were naturally embedded in the game progression to evoke physical reactions and head tracking data was collected in response to these events. Subjective presence was recorded using a post-study questionnaire and real-time assessments. Our novel implementation of behavioral measures lead to insights which could inform future presence research: We propose a measure in which startle reflexes are evoked through specific events in the virtual environment, and head tracking data is compared to the range and speed of baseline interactions.

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