RT Journal Article
T1 Oscillatory Brain Activity in the Time Frequency Domain Associated to Change Blindness and Change Detection Awareness
A1 Amenedo Losada, María Elena
A1 Pazo Álvarez, Paula
A1 Darriba Domínguez, Álvaro
A1 Capilla, Almudena
K1 Oscillatory brain activity
K1 Time-Frequency
K1 EEG
K1 Alpha
K1 Theta
K1 Attentional Blindness
K1 Change detection
K1 Change blindness
AB Despite the importance of change detection (CD) for visual perception and for performance in our environment, observers often miss changes that should be easily noticed. In the present study, we employed time-frequency analysis to investigate the neural activity associated with CD and change blindness (CB). Observers were presented with two successive visual displays and had to look for a change in orientation in any one of four sinusoid gratings between both displays. Theta power increased widely over the scalp after the second display when a change was consciously detected. Relative to no-change and CD, CB was associated with a pronounced theta power enhancement at parietal-occipital and occipital sites and broadly distributed alpha power suppression during the processing of the prechange display. Finally, power suppressions in the beta band following the second display show that, even when a change is not consciously detected, it might be represented to a certain degree. These results show the potential of time-frequency analysis to deepen our knowledge of the temporal curse of the neural events underlying CD. The results further reveal that the process resulting in CB begins even before the occurrence of the change itself.
PB Massachusetts Institute of Technology Press
SN 0898-929X
YR 2011
FD 2011
LK http://hdl.handle.net/10347/22278
UL http://hdl.handle.net/10347/22278
LA eng
NO Darriba, A.; Pazo-Álvarez, P.; Capilla, A.; Amenedo, E. (2011).Oscillatory Brain Activity in the Time Frequency Domain Associated to Change Blindness and Change Detection Awareness. Journal of Cognitive Neuroscience, 24, 337-350. doi: 10.1162/jocn_a_00073
NO This study was supported by two grants from the Spanish MEC (SEJ2007-61397 and PSI2010-21427)
DS Minerva
RD 27 abr 2026