Perception-Action in VR/AR
We study various forms of perception-action coordination in virtual and augmented environments to better understand and improve all XR interactions.
Interactions with Virtual Humans
We investigate how people behave when talking to or when completing tasks with virtual humans of various visual styles.
Long-term Exposure to VR
We explore how user interactions in virtual reality change as they gain experience with the systems and software over time.
The Effects of Auditory, Visual, and Cognitive Distractions on Cybersickness in Virtual Reality
Rohith Venkatakrishnan, Roshan Venkatakrishnan, Balagopal Raveendranath, Dawn M Sarno, Andrew C Robb, Wen-Chieh Lin, Sabarish V Babu (2023)
Cybersickness (CS) is one of the challenges that has hindered the widespread adoption of Virtual Reality (VR). Consequently, researchers continue to explore novel means to mitigate the undesirable effects associated with this affliction, one that may require a combination of remedies as opposed to a solitary stratagem. Inspired by research probing into the use of distractions as a means to control pain, we investigated the efficacy of this countermeasure against CS, studying how the introduction of temporally time-gated distractions affects this malady during a virtual experience featuring active exploration. Downstream of this, we discuss how other aspects of the VR experience are affected by this intervention. We discuss the results of a between-subjects study manipulating the presence, sensory modality, and nature of periodic and short-lived (5-12 seconds) distractor stimuli across 4 experimental conditions: (1) no-distractors (ND); (2) auditory distractors (AD); (3) visual distractors (VD); (4) cognitive distractors (CD). Two of these conditions (VD and AD) formed a yoked control design wherein every matched pair of ‘seers’ and ‘hearers’ was periodically exposed...Read More
These are photos of our lab.
Wide Area Tracking Space
For projects that require extra room
Small Area Tracking Space
Separated spaces for individual projects
VR Headset and Tracker
Helmet with tracker is used for tracking head-motion without the HMD
Members of our lab on picture day 2022
Lab Lunch Spring 2022
Spring lab lunch 2022
Lab Lunch December 2022
December lab lunch 2022
These are some of our ongoing projects.
Effects of Long-term Exposure to VR on Perception-Action Coordination - Kristopher Kohm, Andrew Robb
We studied how perception-action coordination changed as VR users gain experience in virtual environments over time. This work highlights the need for carrying out VR studies over time and the influence that longitudinal calibration can have on spatial perception in long-term VR experiences.
Effect of Experience on Locomotion and Navigation in Virtual Reality - Moloud Nasiri, Andrew Robb
This work considers the experience of users in locomotion and navigating desktop VEs when designing navigation aids and studying their effectiveness. Navigation aids that are appropriate for experienced users may actually not provide a suitable level of support for inexperienced users, and solutions that may improve the navigation performance of inexperienced users may not benefit experienced users beyond a certain degree. Our results will benefit the design of VR applications based on the users' capabilities and needs.
Prisma Health iHeartU mHealth Phone Application - Alex Schlesener, Sabarish V. Babu
The mHealth phone application includes a digital human or embodied conversational agent (ECA) interface for reporting health status. It will be used for the remote monitoring of Prisma Health patients who suffer from pulmonary distress or heart failure. Additionally, we will measure the users' subjective impressions towards the embodied conversational agent (ECA) and the system usability.
Investigating a Combination of Input Modalities, Canvas Geometries, and Inking Triggers on On-Air Handwriting in VR - Roshan Venkatakrishnan, Rohith Venkatakrishnan, Sabarish V. Babu
This work attempts at laying a foundation for future investigations that seek to understand and further improve the on-air writing experience in immersive virtual environments. We study the effects of canvas geometry, inking triggers and input modalities on on-air writing performance, outlining guidelines and good practices to abide by when designing such interfaces.
Investigating the Effects of Secondary Tasks on Cybersickness in Virtual Reality - Rohith Venkatakrishnan, Roshan Venkatakrishnan, Sabarish V. Babu
Cybersickness, a malady like motion sickness strongly manifests in virtual experiences that involve locomotion. This work attempts to study how cybersickness is affected when secondary tasks have to additionally be performed in VR. We further evaluate whether secondary tasks affect other aspects of the VR experience.
Investigating the Effects of End Effector Representations on Interactions in VR - Roshan Venkatakrishnan, Rohith Venkatakrishnan, Sabarish V. Babu
End effectors represent the tools with which users perform actions and interact with the virtual world. This work seeks to investigate how end effector representations affect the efficacy of performance in interaction tasks in immersive virtual environments.
Effects of Self-Avatars on Near-Field Size Perception in XR - Chandni Murmu, Roshan Venkatakrishnan, Rohith Venkatakrishnan, Sabarish V. Babu
Focus of this project is to study effects of presence of users' end effectors and sensory modalities on the perception of tangibles in virtual reality (VR). Through this study we are trying to determine if the perception of size of the tracked tangibles are improved by providing the user's hand avatar in the VR environment.
Travel and Navigation in VR through the lens of Fitts' Law - Chandni Murmu, Sabarish V. Babu
Tradeoff between efficiency and accuracy while performing cornering tasks, in a VR environment of randomly arranged maze, is being studied.
New and noteworthy items from our lab.
Paper Acceptance to ACM TAP (July, 2023)Moloud Nasiri
Moloud recently had her paper titled "Changes in Navigation Over Time: A Comparison of Teleportation and Joystick-based Locomotion" accepted to ACM Transactions on Applied Perception.
Ph.D. Graduation Announcements (July, 2023)Roshan Venkatakrishnan, Rohith Venkatakrishnan
Congratulations to Roshan and Rohith on passing their dissertation defenses! Roshan and Rohith will graduate from the HCC Ph.D. program this August.
Best Paper Award (April, 2023)Roshan Venkatakrishnan, Rohith Venkatakrishnan
Roshan and Rohith's paper titled "How Virtual Hand Representations Affect the Perceptions of Dynamic Affordances in Virtual Reality" won a best paper award at IEEE VR 2023. Also, their paper titled "Give Me a Hand: Improving the Effectiveness of Near-field Augmented Reality Interactions By Avatarizing Users' End Effectors" received a best paper honorable mention at the conference.