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Information transfer in iconic memory experiments

K R Gegenfurtner1, G Sperling

  • 1Howard Hughes Medical Institute, New York University.

Journal of Experimental Psychology. Human Perception and Performance
|August 1, 1993
PubMed
Summary
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Subjects transfer visual information from iconic memory to durable storage. A computational model accurately predicted performance in partial-report tasks, regardless of cue delay variations.

Area of Science:

  • Cognitive Psychology
  • Human Memory
  • Visual Information Processing

Background:

  • Reporting letters from briefly exposed arrays requires transferring information from iconic memory to durable storage.
  • Iconic memory is a transient visual sensory memory that decays rapidly.
  • Understanding this transfer process is key to understanding human memory limitations.

Purpose of the Study:

  • To investigate how practiced subjects transfer information from iconic memory to durable storage.
  • To model the relationship between cue delay, iconic memory decay, and report performance.
  • To assess the impact of masking on information transfer and report accuracy.

Main Methods:

  • Utilized a partial-report paradigm with systematically varied cue delays (long vs. short).

Related Experiment Videos

  • Employed a partial-report-plus-masking experiment to gather data for model construction.
  • Developed a computational model based on assumptions of attention allocation and transfer rates.

    • Main Results:

    • Practiced subjects maintained a consistent information transfer strategy irrespective of cue delay proportion.
    • The computational model accurately predicted both partial- and whole-report performance.
    • The model successfully accounted for performance variations with and without masking.

    Conclusions:

    • Information transfer from iconic memory is influenced by attention allocation, which shifts post-cue.
    • The rate of transfer depends on iconic legibility (time, location) and attentional focus.
    • The capacity of durable storage imposes a limit on cumulative information transfer.