Document Type

Article

Publication Date

10-17-2014

Journal or Book Title

Presence: Teleoperators and Virtual Environments

Volume

23

Issue

3

First Page

300

Last Page

319

DOI

10.1162/PRES_a_00195

Abstract

Many interfaces exist for locomotion in virtual reality, although they are rarely considered fully natural. Past research has found that using such interfaces places cognitive demands on the user, with unnatural actions and concurrent tasks competing for finite cognitive resources. Notably, using semi-natural interfaces leads to poor performance on concurrent tasks requiring spatial working memory. This paper presents an adaptive system designed to track a user's concurrent cognitive task load and adjust interface parameters accordingly, varying the extent to which movement is fully natural. A fuzzy inference system is described and the results of an initial validation study are presented. Users of this adaptive interface demonstrated better performance than users of a baseline interface on several movement metrics, indicating that the adaptive interface helped users manage the demands of concurrent spatial tasks in a virtual environment. However, participants experienced some unexpected difficulties when faced with a concurrent verbal task.

Comments

This article is from Presence: Teleoperators and Virtual Environments 23 (2014): 300, doi:10.1162/PRES_a_00195. Posted with permission. http://www.mitpressjournals.org/loi/pres

Rights

Copyright 2014 MIT Press

Copyright Owner

MIT Press

Language

en

File Format

application/pdf