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Related Experiment Videos

Attention without awareness in blindsight.

R W Kentridge1, C A Heywood, L Weiskrantz

  • 1Department of Psychology, University of Durham, UK. robert.kentridge@durham.ac.uk

Proceedings. Biological Sciences
|October 13, 1999
PubMed
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Visual attention can guide information processing even without conscious awareness in blindsight. This suggests that attentional selection and conscious experience are distinct neurological processes.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Visual Perception

Background:

  • Visual attention is often linked to conscious visual awareness.
  • Blindsight, resulting from primary visual cortex damage, involves diminished or absent visual awareness.
  • Spatially selective attention enhances stimulus detection at attended locations.

Observation:

  • In a blindsight subject, attention improved stimulus processing at a cued location, despite the stimuli not entering consciousness.
  • Attention could be directed by cues in both the intact (spared) and damaged (blind) visual fields.
  • Cues in the blind field could direct attention to a location remote from the cue itself, irrespective of cue awareness.

Findings:

  • Attentional mechanisms can facilitate information processing independently of conscious visual experience.

Related Experiment Videos

  • Spatial attention operates even when visual awareness is compromised.
  • The study demonstrates that attentional selection and conscious awareness are dissociable processes.

    • Implications:

    • Challenges the traditional view equating attention with awareness.
    • Suggests distinct neural pathways for attentional selection and conscious perception.
    • Provides insights into the functional role of attention in the absence of vision.