Automatic mechanisms for measuring subjective unit of discomfort
article
Current practice in Virtual Reality Exposure Therapy (VRET) is that therapists ask patients about their anxiety level by means of the Subjective Unit of Discomfort (SUD) scale. With an aim of developing a home-based VRET system, this measurement ideally should be done using speech technology. In a VRET system for social phobia with scripted avatar-patient dialogues, the timing of asking patients to give their SUD score becomes relevant. This study examined three timing mechanisms: (1) dialogue dependent (i.e. naturally in the flow of the dialogue); (2) speech dependent (i.e. when both patient and avatar are silent); and (3) context independent (i.e. randomly). Results of an experiment with nonpatients (n=24) showed a significant effect for the timing mechanisms on the perceived dialogue flow, user preference, reported presence and user dialog replies. Overall, dialogue dependent timing mechanism seems superior followed by the speech dependent and context independent timing mechanism. © 2012 Interactive Media Institute.
Topics
Anxiety level measurementSpeech detectorVirtual reality exposure therapyadultanxiety assessmentaudio recordingclinical articlespeech discriminationSubjective Unit of Discomfort scalevirtual reality exposure therapyexperiencefeedback systemspeech discriminationSubjective Unit of Discomforttask performancebehavior therapychi square distributioncomputer interfaceinstrumentationphobiaquestionnairetreatment outcomeSpeechSpeech recognitionVirtual realityAnxiety levelsAutomatic mechanismsContext independentCurrent practicesSocial phobiasSpeech technologySUD scoreVirtual reality exposure therapiesPatient treatmentAdultChi-Square DistributionFemaleHumansImplosive TherapyMalePhobic DisordersQuestionnairesTreatment OutcomeUser-Computer Interface
TNO Identifier
954406
ISSN
15548716
Source
Annual Review of CyberTherapy and Telemedicine, 10, pp. 192-196.
Publisher
Virtual reality med institute
Pages
192-196
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