TY - JOUR
T1 - Cognitive responses and cortical oscillatory processing at various stereoscopic depths - a simultaneous EEG/MEG study
AU - Cho, Hohyun
AU - Kang, Min Koo
AU - Ahn, Sangtae
AU - Kwon, Moonyoung
AU - Yoon, Kuk Jin
AU - Kim, Kiwoong
AU - Jun, Sung Chan
N1 - Publisher Copyright:
© 2017 - IOS Press and the authors. All rights reserved.
PY - 2017
Y1 - 2017
N2 - Due to the recent explosion in various forms of 3D content, the evaluation of such content from a neuroscience perspective is quite interesting. However, existing investigations of cortical oscillatory responses in stereoscopic depth perception are quite rare. Therefore, we investigated spatiotemporal and spatio-temporo-spectral features at four different stereoscopic depths within the comfort zone.We adopted a simultaneous EEG/MEG acquisition technique to collect the oscillatory responses of eight participants. We defined subject-specific retinal disparities and designed a single trial-based stereoscopic viewing experimental paradigm. In the group analysis, we observed that, as the depth increased from Level 1 to Level 3, there was a time-locked increase in the N200 component in MEG and the P300 component in EEG in the occipital and parietal areas, respectively. In addition, initial alpha and beta event-related desynchronizations (ERD) were observed at approximately 500 to 1000 msec, while theta, alpha, and beta event-related synchronizations (ERS) appeared at approximately 1000 to 2000 ms. Interestingly, there was a saturation point in the increase in cognitive responses, including N200, P300, and alpha ERD, even when the depth increased only within the comfort zone. Meanwhile, the magnitude of low beta ERD decreased in the dorsal pathway as depth increased. From these findings, we concluded that cognitive responses are likely to become saturated in the visual comfort zone, while perceptual load may increase with depth.
AB - Due to the recent explosion in various forms of 3D content, the evaluation of such content from a neuroscience perspective is quite interesting. However, existing investigations of cortical oscillatory responses in stereoscopic depth perception are quite rare. Therefore, we investigated spatiotemporal and spatio-temporo-spectral features at four different stereoscopic depths within the comfort zone.We adopted a simultaneous EEG/MEG acquisition technique to collect the oscillatory responses of eight participants. We defined subject-specific retinal disparities and designed a single trial-based stereoscopic viewing experimental paradigm. In the group analysis, we observed that, as the depth increased from Level 1 to Level 3, there was a time-locked increase in the N200 component in MEG and the P300 component in EEG in the occipital and parietal areas, respectively. In addition, initial alpha and beta event-related desynchronizations (ERD) were observed at approximately 500 to 1000 msec, while theta, alpha, and beta event-related synchronizations (ERS) appeared at approximately 1000 to 2000 ms. Interestingly, there was a saturation point in the increase in cognitive responses, including N200, P300, and alpha ERD, even when the depth increased only within the comfort zone. Meanwhile, the magnitude of low beta ERD decreased in the dorsal pathway as depth increased. From these findings, we concluded that cognitive responses are likely to become saturated in the visual comfort zone, while perceptual load may increase with depth.
KW - EEG/MEG
KW - ERPs (Event-Related Potentials)
KW - neural oscillations
KW - Stereoscopic 3D
UR - http://www.scopus.com/inward/record.url?scp=85030123400&partnerID=8YFLogxK
U2 - 10.3233/JIN-170018
DO - 10.3233/JIN-170018
M3 - Article
C2 - 28891514
AN - SCOPUS:85030123400
SN - 0219-6352
VL - 16
SP - 255
EP - 273
JO - Journal of Integrative Neuroscience
JF - Journal of Integrative Neuroscience
IS - 3
ER -