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Cortical stimulation consolidates and reactivates visual experience: neural plasticity from magnetic entrainment of visual activity.


ABSTRACT: Delivering transcranial magnetic stimulation (TMS) shortly after the end of a visual stimulus can cause a TMS-induced 'replay' or 'visual echo' of the visual percept. In the current study, we find an entrainment effect that after repeated elicitations of TMS-induced replay with the same visual stimulus, the replay can be induced by TMS alone, without the need for the physical visual stimulus. In Experiment 1, we used a subjective rating task to examine the phenomenal aspects of TMS-entrained replays. In Experiment 2, we used an objective masking paradigm to quantitatively validate the phenomenon and to examine the involvement of low-level mechanisms. Results showed that the TMS-entrained replay was not only phenomenally experienced (Exp.1), but also able to hamper letter identification (Exp.2). The findings have implications in several directions: (1) the visual cortical representation and iconic memory, (2) experience-based plasticity in the visual cortex, and (3) their relationship to visual awareness.

SUBMITTER: Liao HI 

PROVIDER: S-EPMC3714647 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Cortical stimulation consolidates and reactivates visual experience: neural plasticity from magnetic entrainment of visual activity.

Liao Hsin-I HI   Wu Daw-An DA   Halelamien Neil N   Shimojo Shinsuke S  

Scientific reports 20130101


Delivering transcranial magnetic stimulation (TMS) shortly after the end of a visual stimulus can cause a TMS-induced 'replay' or 'visual echo' of the visual percept. In the current study, we find an entrainment effect that after repeated elicitations of TMS-induced replay with the same visual stimulus, the replay can be induced by TMS alone, without the need for the physical visual stimulus. In Experiment 1, we used a subjective rating task to examine the phenomenal aspects of TMS-entrained rep  ...[more]

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