Abstract:
:Perception is guided by the anticipation of future events. It has been hypothesized that this process may be implemented by pattern completion in early visual cortex, in which a stimulus sequence is recreated after only a subset of the visual input is provided. Here we test this hypothesis using ultra-fast functional magnetic resonance imaging to measure BOLD activity at precisely defined receptive field locations in visual cortex (V1) of human volunteers. We find that after familiarizing subjects with a spatial sequence, flashing only the starting point of the sequence triggers an activity wave in V1 that resembles the full stimulus sequence. This preplay activity is temporally compressed compared to the actual stimulus sequence and remains present even when attention is diverted from the stimulus sequence. Preplay might therefore constitute an automatic prediction mechanism for temporal sequences in V1.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Ekman M,Kok P,de Lange FPdoi
10.1038/ncomms15276subject
Has Abstractpub_date
2017-05-23 00:00:00pages
15276issn
2041-1723pii
ncomms15276journal_volume
8pub_type
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