May 2008
Volume 8, Issue 6
Free
Vision Sciences Society Annual Meeting Abstract  |   May 2008
The role of feedback in visual masking, visual awareness and attention
Author Affiliations
  • Stephen Macknik
    Barrow Neurological Institute, Phoenix, AZ, USA
  • Susana Martinez-Conde
    Barrow Neurological Institute, Phoenix, AZ, USA
Journal of Vision May 2008, Vol.8, 487. doi:10.1167/8.6.487
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      Stephen Macknik, Susana Martinez-Conde; The role of feedback in visual masking, visual awareness and attention. Journal of Vision 2008;8(6):487. doi: 10.1167/8.6.487.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

We discuss the role of feedback in visual masking, visual awareness and attention. Our analysis reveals constraints for feedback mechanisms that limit their potential role in visual masking, and in other general brain functions. We propose a feedforward model of visual masking, and provide a hypothesis to explain the role of feedback in visual masking and general visual processing. We review the anatomy and physiology of feedback mechanisms, and propose that the massive ratio of feedback versus feedforward connections in the visual system may be explained solely by the critical need for top-down attentional modulation.

Macknik, S. Martinez-Conde, S. (2008). The role of feedback in visual masking, visual awareness and attention [Abstract]. Journal of Vision, 8(6):487, 487a, http://journalofvision.org/8/6/487/, doi:10.1167/8.6.487. [CrossRef]
Footnotes
 Project funded by the Barrow Neurological Foundation.
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