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Related Concept Videos

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Sensory memory captures information from the environment in its original form for a very brief duration, just long enough to be exposed to visual, auditory, and other senses. This type of memory is detailed and rich but quickly lost unless certain strategies are employed to transfer it into short-term or long-term memory. Sensory information is continuously bombarding the human brain, yet only a small fraction is absorbed, as most of it does not significantly impact daily life. For instance,...
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Related Experiment Video

Updated: Jun 15, 2026

Investigating the Neural Mechanisms of Aware and Unaware Fear Memory with fMRI
12:51

Investigating the Neural Mechanisms of Aware and Unaware Fear Memory with fMRI

Published on: October 6, 2011

Source memory for unidentified stimuli.

Brian P Kurilla1, Deanne L Westerman

  • 1Department of Psychology, State University of New York at Binghamton, Binghamton, NY 13902, USA. bkurill1@binghamton.edu

Journal of Experimental Psychology. Learning, Memory, and Cognition
|March 3, 2010
PubMed
Summary
This summary is machine-generated.

Participants retain source memory for unrecognized items, demonstrating continuous memory processes. This suggests recollection can influence recognition without identification.

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Last Updated: Jun 15, 2026

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Memory Research

Background:

  • The phenomenon of 'recognition without identification' challenges traditional memory models.
  • Understanding the basis of source memory for unrecognized stimuli is crucial for memory theory.

Purpose of the Study:

  • To investigate if participants possess source memory for stimuli they cannot identify.
  • To explore the relationship between source accuracy and item identification.

Main Methods:

  • Utilized a recognition without identification paradigm (Peynircioglu, 1990).
  • Assessed participants' ability to discriminate the source of previously studied items, even when unidentified.
  • Analyzed the correlation between source accuracy and old-new discrimination performance.

Main Results:

  • Participants showed above-chance source discrimination for unidentified items.
  • Source accuracy for unidentified items was independent of old-new discrimination.
  • Source accuracy for unidentified items did not differ from that of identified items.

Conclusions:

  • Source memory operates as a continuous process, not a threshold-based one.
  • Recollection may contribute to recognition without identification in certain contexts.
  • Findings challenge discrete models of memory retrieval and support a graded memory system.