Abstract
Motion-induced blindness (MIB) distinctly visible stimuli are made to periodically disappear by placement within a moving pattern. MIB has been widely utilized to investigate the neural and cognitive mechanisms of visual awareness. We probed observers’ perceptual states after periods of MIB outside of awareness (suppressed by continuous flash suppression: CFS), unattended (concurrent rapid serial visual presentation task), or both. If the target fluctuates during these manipulations (without awareness and/or attention), it should sometimes be perceptually suppressed after this period due to MIB, resulting in longer reaction times (RT) to report the target. We found that CFS and/or inattention had no significant effect on RTs for target detection compared to normal MIB. This suggests that the dynamics of MIB were unaffected by removing awareness, attention or both. A baseline condition in which the target dot was physically absent during the manipulation period only, produced reliably faster RTs for all of our manipulations, including CFS. To ensure that target suppression was due to MIB and not CFS, we ran a stationery MIB control and found no effect of CFS. Together, these results suggest that the phenomenon of MIB is unaffected by the removal of awareness, attention, or both.
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