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Memory for two stimulus-response items in pigeons.

M Jitsumori, S Sugimoto

    Journal of the Experimental Analysis of Behavior
    |July 1, 1982
    PubMed
    Summary
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    This study investigated short-term memory in pigeons using a discrete-trial experiment. Findings show that longer retention intervals impair stimulus control, impacting memory recall accuracy.

    Area of Science:

    • * Behavioral neuroscience
    • * Cognitive psychology
    • * Animal learning

    Background:

    • * Short-term memory is crucial for decision-making.
    • * Understanding temporal factors in memory is key to analyzing stimulus control.

    Purpose of the Study:

    • * To examine the effects of retention interval duration on short-term memory in pigeons.
    • * To investigate how delays between stimuli impact stimulus control and choice accuracy.

    Main Methods:

    • * Six pigeons were trained in a discrete-trial experiment using sequences of stimulus-response pairs.
    • * Varying retention intervals and inter-item intervals were manipulated.
    • * Choice accuracy was measured based on responses to red and green illuminated keys.

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    Main Results:

    • * Increasing the retention interval led to a systematic loss of stimulus control.
    • * Inter-item interval changes had differential effects based on group and trial type.
    • * Group 2 showed a loss of stimulus control on red trials with longer inter-item intervals.

    Conclusions:

    • * Temporal factors significantly influence short-term memory and stimulus control in pigeons.
    • * The study provides an empirical basis for understanding how temporal relations function as discriminative stimuli.