Pre-stimulus alpha predicts inattentional blindness |
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Institution: | 1. Kobe University, 1-2-1 Tsurukabuto, Nada-ku, Kobe 657-8501, Japan;2. Japan Society for the Promotion of Science, Chiyoda-ku, Tokyo 102-8471, Japan;1. Radboud University Medical Centre, Dept. of Neurology, Radboud University Nijmegen, Nijmegen, The Netherlands;2. Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands |
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Abstract: | Pre- and post-stimulus oscillatory activity between 8 and 12 hertz, referred to as the alpha-band, correlates with conscious visual awareness of stimuli across a variety of psychophysical tasks. Within an EEG-adapted inattentional blindness task, the current study sought to examine whether this relationship holds for conscious awareness of stimuli under conditions of inattentional blindness. Noticing rates of the task-irrelevant unexpected stimulus were correlated with a significant decrease in alpha power over bilateral parietal-occipital areas during the pre-stimulus interval, and a significant decrease in alpha power over parietal-occipital regions in the right hemisphere during the post-stimulus interval. Findings are taken to imply alpha-band neural activity represents a valid correlate of consciousness that is not confounded by task relevancy or the need for report. |
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Keywords: | Inattentional blindness Alpha Attention Consciousness No-report Perception p300 Visual awareness negativity |
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