Brain Activity in Virtual Reality: Assessing Signal Quality of High-Resolution EEG While Using Head-Mounted Displays

2019 ◽  
Author(s):  
Stephan Hertweck ◽  
Desiee Weber ◽  
Hisham Alwanni ◽  
Fabian Unruh ◽  
Martin Fischbach ◽  
...  
Keyword(s):  
Virtual Reality ◽  
High Resolution ◽  
Brain Activity ◽  
Signal Quality ◽  
Head Mounted Displays ◽  
High Resolution Eeg

scholarly journals A Structured Approach to Test the Signal Quality of Electroencephalography Measurements During Use of Head-Mounted Displays for Virtual Reality Applications

2021 ◽  
Vol 15 ◽  
Author(s):  
Desirée Weber ◽  
Stephan Hertweck ◽  
Hisham Alwanni ◽  
Lukas D. J. Fiederer ◽  
Xi Wang ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Brain Activity ◽  
Signal Quality ◽  
Eeg Signal ◽  
Frequency Range ◽  
Non Invasive ◽  
Head Mounted Displays ◽  
Sensory Evoked ◽  
Structured Approach

Joint applications of virtual reality (VR) systems and electroencephalography (EEG) offer numerous new possibilities ranging from behavioral science to therapy. VR systems allow for highly controlled experimental environments, while EEG offers a non-invasive window to brain activity with a millisecond-ranged temporal resolution. However, EEG measurements are highly susceptible to electromagnetic (EM) noise and the influence of EM noise of head-mounted-displays (HMDs) on EEG signal quality has not been conclusively investigated. In this paper, we propose a structured approach to test HMDs for EM noise potentially harmful to EEG measures. The approach verifies the impact of HMDs on the frequency- and time-domain of the EEG signal recorded in healthy subjects. The verification task includes a comparison of conditions with and without an HMD during (i) an eyes-open vs. eyes-closed task, and (ii) with respect to the sensory- evoked brain activity. The approach is developed and tested to derive potential effects of two commercial HMDs, the Oculus Rift and the HTC Vive Pro, on the quality of 64-channel EEG measurements. The results show that the HMDs consistently introduce artifacts, especially at the line hum of 50 Hz and the HMD refresh rate of 90 Hz, respectively, and their harmonics. The frequency range that is typically most important in non-invasive EEG research and applications (<50 Hz) however, remained largely unaffected. Hence, our findings demonstrate that high-quality EEG recordings, at least in the frequency range up to 50 Hz, can be obtained with the two tested HMDs. However, the number of commercially available HMDs is constantly rising. We strongly suggest to thoroughly test such devices upfront since each HMD will most likely have its own EM footprint and this article provides a structured approach to implement such tests with arbitrary devices.

The study of brain activity during the observation of commercial advertsing by using high resolution EEG techniques

2009 ◽  
Author(s):  
G. Vecchiato ◽  
L. Astolfi ◽  
F. De Vico Fallani ◽  
S. Salinari ◽  
F. Cincotti ◽  
...  
Keyword(s):  
High Resolution ◽  
Brain Activity ◽  
High Resolution Eeg

scholarly journals Participatory design and evaluation of virtual reality games to promote engagement in physical activity for people living with dementia

2020 ◽  
Vol 7 ◽  
pp. 205566832091377
Author(s):  
Mazhar Eisapour ◽  
Shi Cao ◽  
Jennifer Boger
Keyword(s):  
Physical Activity ◽  
Virtual Reality ◽  
Participatory Design ◽  
Upper Body ◽  
Subjective Responses ◽  
Qualitative And Quantitative ◽  
Head Mounted Displays ◽  
Fitness Parameters ◽  
Level Of Effort

Background Exercise is a key component of physical health and quality of life for people living with dementia; however, challenges related to dementia symptoms and aging can make it difficult for people living with dementia to engage in exercise. While immersive virtual reality is showing increasing promise for exercise and rehabilitation applications, there is a lack of research regarding its use with people living with dementia. Methods Through participatory design with exercise therapists, kinesiologists, and people living with dementia, we designed two virtual reality environments (a farm and a gym) that were implemented on head-mounted displays to support five different upper-body exercises. Virtual reality and comparable human-guided exercises were tested with six people living with dementia. Both qualitative and quantitative measures were used, including reaching distance, distance traversed, and speed as well as feelings of enjoyment, engagement, interest, easiness, comfort, and level of effort. Results Participants’ subjective responses, motion, and fitness parameters all demonstrated comparable results between virtual reality and human-guided exercises. Therapists’ feedback also supported virtual reality exercise as an appropriate and engaging method for people living with dementia. Conclusions Collaborating with experts and people living with dementia throughout the design process resulted in an intuitive and engaging design. The results suggest that head-mounted virtual reality has promising potential to support physical activity for people living with dementia.

Monitoring Neuro-Motor Recovery From Stroke With High-Resolution EEG, Robotics and Virtual Reality: A Proof of Concept

2015 ◽  
Vol 23 (6) ◽  
pp. 1106-1116 ◽  
Author(s):  
Silvia Comani ◽  
Lucia Velluto ◽  
Lorenzo Schinaia ◽  
Gianluigi Cerroni ◽  
Antonio Serio ◽  
...  
Keyword(s):  
Virtual Reality ◽  
High Resolution ◽  
Motor Recovery ◽  
Proof Of Concept ◽  
High Resolution Eeg

scholarly journals EEG Analysis of the Brain Activity during the Observation of Commercial, Political, or Public Service Announcements

2010 ◽  
Vol 2010 ◽  
pp. 1-7 ◽  
Author(s):  
Giovanni Vecchiato ◽  
Laura Astolfi ◽  
Alessandro Tabarrini ◽  
Serenella Salinari ◽  
Donatella Mattia ◽  
...  
Keyword(s):  
High Resolution ◽  
Public Service ◽  
Brain Activity ◽  
Video Clip ◽  
Normal Subjects ◽  
Cortical Activity ◽  
Public Service Announcements ◽  
Statistical Techniques ◽  
Swing Voters ◽  
High Resolution Eeg

The use of modern brain imaging techniques could be useful to understand what brain areas are involved in the observation of video clips related to commercial advertising, as well as for the support of political campaigns, and also the areas of Public Service Announcements (PSAs). In this paper we describe the capability of tracking brain activity during the observation of commercials, political spots, and PSAs with advanced high-resolution EEG statistical techniques in time and frequency domains in a group of normal subjects. We analyzed the statistically significant cortical spectral power activity in different frequency bands during the observation of a commercial video clip related to the use of a beer in a group of 13 normal subjects. In addition, a TV speech of the Prime Minister of Italy was analyzed in two groups of swing and “supporter” voters. Results suggested that the cortical activity during the observation of commercial spots could vary consistently across the spot. This fact suggest the possibility to remove the parts of the spot that are not particularly attractive by using those cerebral indexes. The cortical activity during the observation of the political speech indicated a major cortical activity in the supporters group when compared to the swing voters. In this case, it is possible to conclude that the communication proposed has failed to raise attention or interest on swing voters. In conclusions, high-resolution EEG statistical techniques have been proved to able to generate useful insights about the particular fruition of TV messages, related to both commercial as well as political fields.

scholarly journals The Track of Brain Activity during the Observation of TV Commercials with the High-Resolution EEG Technology

2009 ◽  
Vol 2009 ◽  
pp. 1-7 ◽  
Author(s):  
Laura Astolfi ◽  
Giovanni Vecchiato ◽  
Fabrizio De Vico Fallani ◽  
Serenella Salinari ◽  
Febo Cincotti ◽  
...  
Keyword(s):  
High Resolution ◽  
Brain Activity ◽  
Normal Subjects ◽  
Significant Information ◽  
Cortical Areas ◽  
Brodmann Areas ◽  
Tv Commercials ◽  
Tv Commercial ◽  
The Brain ◽  
High Resolution Eeg

We estimate cortical activity in normal subjects during the observation of TV commercials inserted within a movie by using high-resolution EEG techniques. The brain activity was evaluated in both time and frequency domains by solving the associate inverse problem of EEG with the use of realistic head models. In particular, we recover statistically significant information about cortical areas engaged by particular scenes inserted within the TV commercial proposed with respect to the brain activity estimated while watching a documentary. Results obtained in the population investigated suggest that the statistically significant brain activity during the observation of the TV commercial was mainly concentrated in frontoparietal cortical areas, roughly coincident with the Brodmann areas 8, 9, and 7, in the analyzed population.

Combining a passive robotic device, virtual reality and high-resolution EEG for post-stroke neuro-motor rehabilitation

2013 ◽  
Vol 43 (1) ◽  
pp. 76 ◽  
Author(s):  
M. Steinisch ◽  
M.G. Tana ◽  
B. Guarnieri ◽  
G. Cerroni ◽  
A. Serio ◽  
...  
Keyword(s):  
Virtual Reality ◽  
High Resolution ◽  
Robotic Device ◽  
Motor Rehabilitation ◽  
Post Stroke ◽  
High Resolution Eeg
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