Head mounted displays (HMD) are often utilized in virtual reality protocols. Measures such as fNIRS, EEG, and Cognitive State are also useful, and sensors for such measurements must be placed on the participant’s head along with the HMD. Maintaining participant comfort as well as field of view is critical for such studies to provide meaningful results.
BIOPAC has a unique solution for using fNIRS under a VR helmet. Due to the very thin and flexible sensor design, our fNIRS sensor fits comfortably under most head-mounted displays. See above how the sensor fits with the Oculus Quest 2, VIVE, and HP Reverb G2 Omnicept. In addition, our wireless fNIRS system allows for the fNIRS Imager device to be worn on the upper arm, eliminating the need to placed extra hardware on the head. You can even combine fNIRS and a B-Alert X Series wireless EEG headset for untethered, lightweight measurement. Additional benefits of using BIOPAC’s fNIRS solution in VR include real-time streaming of oxygenation and raw data to the virtual environment to enable neurofeedback.
The comfort and fit of an HMD with additional sensor(s) was tested.
Popular HMDs include HP G2, Oculus Quest 1 and 2, Rift S, Varjo, and Vive. Three were selected for this test, additional HMD units will be added as testing goes on.
fNIRS and B-Alert sensors did not block the field of view of an individual wearing either device in a VR headset.
They all fit relatively comfortably under all three headsets.
HP Reverb was considered the most comfortable in this test (and generally) given it has a padded, adjustable headband and is lightweight
Vive Pro had similar results but is slightly less comfortable since it weighs more
Quest 2 was slightly less comfortable given it is just elastic straps holding the headset in place; it felt the least secure when both EEG and fNIRS were used, but this could be alleviated by really tightening the head straps
The NICO Smart Amplifier is specifically designed to measure thoracic impedance for performing noninvasive cardiac output measurements. The amplifier terminates in two connectors for impedance (Z) and its derivative (dZ), and has a 3 m cable that connects directly to an AMI100D Amplifier Input Module. Use with EL526 strip electrodes and CBL246 adapter or with EL500 […]
The autonomic nervous system (ANS) is responsible for regulating the functions of all the body’s organs. Take a look at this month’s citations to see how to apply BIOPAC’s tools and learn techniques for ANS research… Comparable responses to a wide range of olfactory stimulation in women and men. Scientific Reports, 13(1), 9059. Lillqvist, M., Claeson, […]
BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]