Musings on telepresence and virtual presence
Presence: Teleoperators and Virtual Environments - Premier issue
The influence of dynamic shadows on presence in immersive virtual environments
VE '95 Selected papers of the Eurographics workshops on Virtual environments '95
Measurement of presence and its consequences in virtual environments
International Journal of Human-Computer Studies
Physiological measures of presence in stressful virtual environments
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Presence: Teleoperators and Virtual Environments - Virtual environments: Virtual environments and mobile robots: Control, simulation, and robot pilot training
Presence, memory and interaction in virtual environments
International Journal of Human-Computer Studies
Analysis of physiological responses to a social situation in an immersive virtual environment
Presence: Teleoperators and Virtual Environments - Special issue: 8th annual international workshop on presence II
Sharing and analyzing data from presence experiments
Presence: Teleoperators and Virtual Environments - Special issue: 8th annual international workshop on presence II
A Cross-Media Presence Questionnaire: The ITC-Sense of Presence Inventory
Presence: Teleoperators and Virtual Environments
Measuring Presence in Virtual Environments: A Presence Questionnaire
Presence: Teleoperators and Virtual Environments
Effects of Sensory Information and Prior Experience on Direct Subjective Ratings of Presence
Presence: Teleoperators and Virtual Environments
Presence: Teleoperators and Virtual Environments
Presence: Teleoperators and Virtual Environments
Using Presence Questionnaires in Reality
Presence: Teleoperators and Virtual Environments
How Colorful Was Your Day? Why Questionnaires Cannot Assess Presence in Virtual Environments
Presence: Teleoperators and Virtual Environments
Presence as Being-in-the-World
Presence: Teleoperators and Virtual Environments
Presence: Teleoperators and Virtual Environments
Predicting presence: Constructing the Tendency toward Presence Inventory
International Journal of Human-Computer Studies
Virtual Reality - Special Issue on Presence
| Hi-index | 0.00 |
One of the techniques used to monitor variations in presence during a virtual reality experience is the analysis of breaks in presence (BIPs). Previous studies have monitored peripheral physiological responses during BIPs in order to find a characteristic physiological response. In this work, blood flow velocity (BFV) in middle cerebral arteries (MCAs) has been monitored using transcranial Doppler ultrasound during the exposure to a virtual environment. Two BIPs of different intensity were forced during the virtual reality experience. Variations in BFV during each BIP and during the recovery periods that followed them have been analyzed. A decreasing trend was observed in BFV signal during the most intense BIP in most subjects. However, during the less intense BIP an oscillating behavior was observed. Significant differences have been found between the maximum percentage variations observed in each BIP. During the recovery periods, an increasing trend was observed. The mean response times (time elapsed since the beginning of the period until the maximum percentage variation in the period occured) ranged between 10.116 s and 12.774 s during the BIPs, and between 11.025 s and 13.345 during the recovery periods, depending on the vessel and on the kind of BIP.