Using Multiple Psychophysiological Techniques To Triangulate The Results Of Eye-Tracking Data

The process of learning and retaining information has been a well-researched area, especially regarding cognitive load. One of the recent methods of study is the field of psychophysiology, which relates the mental and physical processes of the human body. Data collected in this area of biometrics can provide measurements beyond simply cognitive load, including behavioral states, stress, emotion, personality, and intelligence. It can be beneficial to combine these techniques to measure data simultaneously in a process known as co-registration, which ensures that multiple systems are synchronized as a means to triangulate findings. This chapter will provide a summary of various psychophysiological techniques and include an example of a study using co-registration of electroencephalography (EEG) and eye tracking to determine the scanpath students follow and the area of the brain activated when given both a familiar and novel biochemical pathway to examine. The collected data from the Tobii X2-30 eye tracker revealed the differences in areas of interest (A01), fixation, and scanpath between students with and without instruction on reading biochemical pathways. The EEG data provided evidence for usage of different areas of brain activation between students given the representations.