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Related Experiment Videos

Peripersonal and vertical neglect.

P A Shelton1, D Bowers, K M Heilman

  • 1Department of Neurology, Veterans Administration Medical Center, Gainesville.

Brain : a Journal of Neurology
|February 1, 1990
PubMed
Summary
This summary is machine-generated.

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Normal attention distributes away from the body visually and towards it tactilely. A patient with temporal lobe lesions neglected far space and upper vertical space, indicating spatial neglect can occur in radial and vertical axes.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Spatial Cognition

Background:

  • Human attention is typically studied along the horizontal axis, with less focus on vertical and radial dimensions.
  • Understanding spatial attention is crucial for diagnosing and treating neurological disorders.

Observation:

  • Normal subjects exhibit distinct spatial biases when bisecting lines visually versus tactilely.
  • Visual line bisection shows a bias towards distant peripersonal space and upper vertical space.
  • Tactile-proprioceptive line bisection shows a bias towards near peripersonal space.

Findings:

  • A patient with inferior temporal lobe lesions demonstrated neglect of far peripersonal and upper vertical space.
  • This patient also exhibited a motor bias away from the neglected space.

Related Experiment Videos

  • These observations suggest spatial attention operates across horizontal, vertical, and radial axes.

    • Implications:

    • Attention may be unequally distributed across these three orthogonal axes in healthy individuals.
    • Spatial neglect is not limited to the horizontal dimension and can manifest in vertical and radial axes.
    • This research provides a framework for understanding multi-axis spatial attention and neglect in humans.