Cognitive Load Measurement with Physiological Sensors in Virtual Reality during Physical Activity
Mohammad Ahmadi, Samantha Michalka, Sabrina Lenzoni, Marzieh Ahmadi Najafabadi, Huidong Bai, Alexander Sumich, Burkhard Wüensche, Mark Billinghurst
Abstract
Many Virtual Reality (VR) experiences, such as learning tools, would benefit from utilising mental states such as cognitive load. Increases in cognitive load (CL) are often reflected in the alteration of physiological responses, such as pupil dilation (PD), electrodermal cctivity (EDA), heart rate (HR), and electroencephalography (EEG). However, the relationship between these physiological responses and cognitive load are usually measured while participants sit in front of a computer screen, whereas VR environments often require a high degree of physical movement. This physical activity can affect the measured signals, making it unclear how suitable these measures are for use in interactive Virtual Reality (VR).