Neural manifestations of memory with and without awareness

Ken A. Paller*, Craig A. Hutson, Brennan B. Miller, Stephan G. Boehm

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

69 Scopus citations


Neurophysiological events responsible for different types of human memory tend to occur concurrently and are therefore difficult to measure independently. To surmount this problem, we produced perceptual priming (indicated by speeded responses) in the absence of conscious remembering. At encoding, faces appeared briefly while subjects' attention was diverted to other stimuli. Faces appeared again in either an implicit or explicit memory test. Neural correlates of priming were identified as brain potentials beginning 270 ms after face onset with more negative amplitudes for repeated than for new faces. Remembered faces, in contrast, activated a different configuration of intracranial sources producing positive potentials maximal at 600-700 ms. We thus disentangled and characterized distinct neural events associated with memory with and without awareness.

Original languageEnglish (US)
Pages (from-to)507-516
Number of pages10
Issue number3
StatePublished - May 8 2003

ASJC Scopus subject areas

  • Neuroscience(all)


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