TY - JOUR
T1 - Theta oscillations related to orientation recognition in unattended condition
T2 - A vMMN study
AU - Yan, Tianyi
AU - Feng, Yuan
AU - Liu, Tiantian
AU - Wang, Luyao
AU - Mu, Nan
AU - Dong, Xiaonan
AU - Liu, Zichuan
AU - Qin, Tianran
AU - Tang, Xiaoying
AU - Zhao, Lun
N1 - Publisher Copyright:
© 2017 Yan, Feng, Liu, Wang, Mu, Dong, Liu, Qin, Tang and Zhao.
PY - 2017/9/4
Y1 - 2017/9/4
N2 - Orientation is one of the important elements of objects that can influence visual processing. In this study, we examined whether changes in orientation could be detected automatically under unattended condition. Visual mismatch negativity (vMMN) was used to analyze this processing. In addition, we investigated the underlying neural oscillatory activity. Non-phase-locked spectral power was used to explore the specific frequency related to unexpected changes in orientation. The experiment consisted of standard (0° arrows) and deviant (90° /270° arrows) stimuli. Compared with standard stimuli, deviant stimuli elicited a larger N170 component (negative wave approximately 170 ms after the stimuli started) and a smaller P2 component (positive wave approximately 200 ms after the stimuli started). Furthermore, vMMN was obtained by subtracting the event-related potential (ERP) waveforms in response to standard stimuli from those elicited in response to deviant stimuli. According to the time–frequency analysis, deviant stimuli elicited enhanced band power compared with standard stimuli in the delta and theta bands. Compared with previous studies, we concluded that theta activity plays an important role in the generation of the vMMN induced by changes in orientation.
AB - Orientation is one of the important elements of objects that can influence visual processing. In this study, we examined whether changes in orientation could be detected automatically under unattended condition. Visual mismatch negativity (vMMN) was used to analyze this processing. In addition, we investigated the underlying neural oscillatory activity. Non-phase-locked spectral power was used to explore the specific frequency related to unexpected changes in orientation. The experiment consisted of standard (0° arrows) and deviant (90° /270° arrows) stimuli. Compared with standard stimuli, deviant stimuli elicited a larger N170 component (negative wave approximately 170 ms after the stimuli started) and a smaller P2 component (positive wave approximately 200 ms after the stimuli started). Furthermore, vMMN was obtained by subtracting the event-related potential (ERP) waveforms in response to standard stimuli from those elicited in response to deviant stimuli. According to the time–frequency analysis, deviant stimuli elicited enhanced band power compared with standard stimuli in the delta and theta bands. Compared with previous studies, we concluded that theta activity plays an important role in the generation of the vMMN induced by changes in orientation.
KW - Event-related brain potentials (ERPs)
KW - Theta oscillation
KW - Time-frequency analysis
KW - Visual mismatch negativity (vMMN)
KW - Wavelet analysis
UR - http://www.scopus.com/inward/record.url?scp=85040977086&partnerID=8YFLogxK
U2 - 10.3389/fnbeh.2017.00166
DO - 10.3389/fnbeh.2017.00166
M3 - Article
AN - SCOPUS:85040977086
SN - 1662-5153
VL - 11
JO - Frontiers in Behavioral Neuroscience
JF - Frontiers in Behavioral Neuroscience
M1 - 166
ER -