Characteristics of the Average Human Visual Evoked Response (VER).
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING
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Apparatus and procedure were designed to present subjects with point-source visual stimuli in the 50-75 threshold range and to record their psychophysical and physiological responses. A total of six subjects were tested using a forced choice testing procedure. The data obtained from the experiment consisted of over 3600 single-trial EEG records one-half second in length. A group analysis of the data was accomplished, and a computer program was developed to identify whether or not the stimulus was perceived in each EEG record. The computer analysis is based on a filtered Fourier transform identification technique developed by the Air Force Institute of Technology and the Aerospace Medical Research Laboratory. The results of the computer analysis were compared with the subjects psychophysical responses to calculate the probability of detection. Modified author abstract
- Anatomy and Physiology