Evaluation of 3D cognitive fatigue using heart-brain synchronization.
The purpose of this study was to identify an evaluation method for 3D cognitive fatigue based on a heart-brain synchronization phenomenon known as the heartbeat evoked potential (HEP). Thirty undergraduate students (15 females) watched a video in both 2D and 3D for an hour. Because visual fatigue is related to cognitive load, the HEP was used as an indicator of communication between the heart and the brain and therefore of cognitive function; responses were compared after 2D and 3D viewing. At the standard EEG sites F3 and F4, the alpha activity of the first and second HEP components was significantly increased after 3D video viewing relative to 2D. This increase likely indicates that sensory input from 3D video requires heavy computation by the brain, stimulating heart activity. The conclusion is that the first and second HEP components are significant parameters that can quantitatively evaluate 3D visual fatigue. Further work is needed to uncover the cause of 3D visual fatigue.
Dept. of Emotion Engineering, Graduate School, Sangmyung University, 7 Hongji-dong, Jongro-Ku, Seoul 110-743, Republic of Korea. Electronic address: ini0630@naver.com.
Sangin
S
Park
Dept. of Emotion Engineering, Graduate School, Sangmyung University, 7 Hongji-dong, Jongro-Ku, Seoul 110-743, Republic of Korea. Electronic address: dnjsaudwn@naver.com.
Myoung Ju
MJ
Won
Dept. of Computer Science, Sangmyung University, 7 Hongji-dong, Jongro-Ku, Seoul 110-743, Republic of Korea. Electronic address: eclee@smu.ac.kr.
Eui Chul
EC
Lee
Sensor System Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea. Electronic address: scmun@kist.re.kr.
Sungchul
S
Mun
Sensor System Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea; Department of Human Computer Interaction and Robotics, Korea University of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea. Electronic address: minchul@kist.re.kr.
Min-Chul
MC
Park
Dept. of Digital Media, Sangmyung University, 7 Hongji-dong, Jongro-Ku, Seoul 110-743, Republic of Korea. Electronic address: whang@smu.ac.kr.
Mincheol
M
Whang
D001921:Brain / Q000503:physiopathology*; D003071:Cognition / Q000502:physiology*; D004562:Electrocardiography; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology*; D005221:Fatigue / Q000473:pathology*; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D010775:Photic Stimulation; D011930:Reaction Time / Q000502:physiology
3D visual fatigue; Cognitive load; ERP (event related potential); HEP (heartbeat evoked potential); Heart–brain synchronization