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Brain Sci. 2012, 2(1), 22-32; doi:10.3390/brainsci2010022

Implicit Recognition Based on Lateralized Perceptual Fluency

1
Department of Psychology, Northwestern University, Evanston, IL 60208, USA
2
Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
*
Author to whom correspondence should be addressed.
Received: 20 December 2011 / Revised: 21 January 2012 / Accepted: 31 January 2012 / Published: 6 February 2012
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Abstract

In some circumstances, accurate recognition of repeated images in an explicit memory test is driven by implicit memory. We propose that this “implicit recognition” results from perceptual fluency that influences responding without awareness of memory retrieval. Here we examined whether recognition would vary if images appeared in the same or different visual hemifield during learning and testing. Kaleidoscope images were briefly presented left or right of fixation during divided-attention encoding. Presentation in the same visual hemifield at test produced higher recognition accuracy than presentation in the opposite visual hemifield, but only for guess responses. These correct guesses likely reflect a contribution from implicit recognition, given that when the stimulated visual hemifield was the same at study and test, recognition accuracy was higher for guess responses than for responses with any level of confidence. The dramatic difference in guessing accuracy as a function of lateralized perceptual overlap between study and test suggests that implicit recognition arises from memory storage in visual cortical networks that mediate repetition-induced fluency increments.
Keywords: implicit memory; recognition; perceptual priming implicit memory; recognition; perceptual priming
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Vargas, I.M.; Voss, J.L.; Paller, K.A. Implicit Recognition Based on Lateralized Perceptual Fluency. Brain Sci. 2012, 2, 22-32.

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