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http://hdl.handle.net/10397/6263
Title: | Usability of a virtual reality environment simulating an automated teller machine for assessing and training persons with acquired brain injury | Authors: | Fong, NKK Chow, KYY Chan, BCH Lam, KCK Lee, JCK Li, THY Yan, EWH Wong, ATY |
Issue Date: | 30-Apr-2010 | Source: | Journal of neuroEngineering and rehabilitation, 30 Apr. 2010, 7, 19, p.1-9 | Abstract: | Objective: This study aimed to examine the usability of a newly designed virtual reality (VR) environment simulating the operation of an automated teller machine (ATM) for assessment and training. Design: Part I involved evaluation of the sensitivity and specificity of a non-immersive VR program simulating an ATM (VR-ATM). Part II consisted of a clinical trial providing baseline and post-intervention outcome assessments. Setting: A rehabilitation hospital and university-based teaching facilities were used as the setting. Participants: A total of 24 persons in the community with acquired brain injury (ABI) - 14 in Part I and 10 in Part II - made up the participants in the study. Interventions: In Part I, participants were randomized to receive instruction in either an "early" or a "late" VR-ATM program and were assessed using both the VR program and a real ATM. In Part II, participants were assigned in matched pairs to either VR training or computer-assisted instruction (CAI) teaching programs for six 1-hour sessions over a three-week period. Outcome Measures: Two behavioral checklists based on activity analysis of cash withdrawals and money transfers using a real ATM were used to measure average reaction time, percentage of incorrect responses, level of cues required, and time spent as generated by the VR system; also used was the Neurobehavioral Cognitive Status Examination. Results: The sensitivity of the VR-ATM was 100% for cash withdrawals and 83.3% for money transfers, and the specificity was 83% and 75%, respectively. For cash withdrawals, the average reaction time of the VR group was significantly shorter than that of the CAI group (p = 0.021). We found no significant differences in average reaction time or accuracy between groups for money transfers, although we did note positive improvement for the VR-ATM group. Conclusion: We found the VR-ATM to be usable as a valid assessment and training tool for relearning the use of ATMs prior to real-life practice in persons with ABI. |
Keywords: | Brain injuries Reaction time Sensitivity and specificity User-computer interface |
Publisher: | BioMed Central Ltd. | Journal: | Journal of neuroEngineering and rehabilitation | ISSN: | 1743-0003 | DOI: | 10.1186/1743-0003-7-19 | Rights: | © 2010 Fong et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Appears in Collections: | Journal/Magazine Article |
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Fong_Virtual_Reality_Brain.pdf | 828.83 kB | Adobe PDF | View/Open |
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