New #preprint out on @biorxiv! \w @neuromurphy, @kobedesender, Nicole de Ru & Sander Nieuwenhuis, we show that temporal expectation enhances perception by speeding up the the decision process onset without affecting its evolution! #tweeprint below (1/10)http://bit.ly/2vL0ovX
Again supporting account 1, at the single-trial level, temporal expectation reduced onset, but did not affect slope. Difficulty did affect slope, as expected (so results are not just due to a difference in sensitivity between slope/onset). (7/10)pic.twitter.com/KQ5axzx4Ne
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These results strongly support an account in which temporal expectation enhances task performance specifically by shortening the time needed for sensory encoding, and not by affecting the decision process (besides its onset) (8/10)
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Where might fluctuations in sensory encoding originate? Anticipatory alpha power was modulated by expectations, and tracked both response-time and CPP onset. This may reflect fluctuations in top-down signaling in accordance with expectations about target onset (9/10)pic.twitter.com/fo5VHWxhiO
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Our findings thus highlight how temporal predictions optimize our interaction with unfolding sensory events: by reducing sensory encoding time. Thanks to
@k_tsetsos for helpful comments, and@AvHStiftung and@ERC_Research for funding! (10/10)Prikaži ovu nit
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