Biased feedback in spatial recall yields a violation of delta rule learning |
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Authors: | John Lipinski John P Spencer Larissa K Samuelson |
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Institution: | (1) Division of Psychobiology, Yerkes National Primate Research Center, 954 Gatewood Road, Atlanta, GA 30322, USA;(2) Department of Veterinary Sciences, The University of Texas, M.D. Anderson Cancer Center, Bastrop, TX 78602, USA;(3) Animal Behavior Program, Southwestern University, Georgetown, TX 78626, USA;(4) Division of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104, USA;(5) Department of Psychology, Berry College, Mount Berry, GA 30149, USA; |
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Abstract: | This study investigates whether inductive processes influencing spatial memory performance generalize to supervised learning
scenarios with differential feedback. After providing a location memory response in a spatial recall task, participants received
visual feedback showing the target location. In critical blocks, feedback was systematically biased either 4° toward the vertical
axis (toward condition) or 4° farther away from the vertical axis (away condition). Results showed that the weaker teaching signal (i.e., a smaller difference between the remembered location and the feedback location) produced a stronger experience-dependent change over blocks in the away condition than in the toward condition. This violates delta rule learning.
Subsequent simulations of the dynamic field theory of spatial cognition provide a theoretically unified account of these results. |
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