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Context-enabled learning in the human visual system

Author

Listed:
  • Yael Adini

    (Brain Research, The Weizmann Institute of Science)

  • Dov Sagi

    (Brain Research, The Weizmann Institute of Science)

  • Misha Tsodyks

    (Brain Research, The Weizmann Institute of Science)

Abstract

Training was found to improve the performance of humans on a variety of visual perceptual tasks1,2. However, the ability to detect small changes in the contrast of simple visual stimuli could not be improved by repetition3. Here we show that the performance of this basic task could be modified after the discrimination of the stimulus contrast was practised in the presence of similar laterally placed stimuli, suggesting a change in the local neuronal circuit involved in the task. On the basis of a combination of hebbian and anti-hebbian synaptic learning rules compatible with our results, we propose a mechanism of plasticity in the visual cortex that is enabled by a change in the context.

Suggested Citation

  • Yael Adini & Dov Sagi & Misha Tsodyks, 2002. "Context-enabled learning in the human visual system," Nature, Nature, vol. 415(6873), pages 790-793, February.
    • Handle: RePEc:nat:nature:v:415:y:2002:i:6873:d:10.1038_415790a
    DOI: 10.1038/415790a
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    Cited by:

    1. Daniel H Baker, 2013. "What Is the Primary Cause of Individual Differences in Contrast Sensitivity?," PLOS ONE, Public Library of Science, vol. 8(7), pages 1-9, July.

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