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Related Experiment Videos

Graspable objects grab attention when the potential for action is recognized.

Todd C Handy1, Scott T Grafton, Neha M Shroff

  • 1Center for Cognitive Neuroscience, 6162 Moore Hall, Dartmouth College, Hanover, New Hampshire 03755, USA. todd.c.handy@dartmouth.edu

Nature Neuroscience
|March 18, 2003
PubMed
Summary
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Graspable objects, like tools, automatically capture visual attention, aiding visuomotor transformations for grasping. This finding highlights how object properties influence attention and action planning.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Motor Control

Background:

  • Visually guided grasping involves transforming visual information into motor commands.
  • The role of object properties in capturing spatial attention during action planning is not fully understood.

Purpose of the Study:

  • To investigate whether graspable objects automatically attract spatial attention.
  • To explore the neural mechanisms underlying this attention capture during visuomotor transformations.

Main Methods:

  • Event-related potentials (ERPs) were used to measure spatial attention.
  • Event-related functional magnetic resonance imaging (fMRI) was employed to identify brain regions involved.
  • Human subjects viewed 'tool' and 'non-tool' objects while awaiting a target.

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Main Results:

  • Tools systematically drew spatial attention in specific visual fields (right and lower).
  • This attention capture correlated with activation in dorsal premotor and prefrontal cortices.
  • Activation patterns suggested a link between object properties, attention, and action planning regions.

Conclusions:

  • Graspable objects, particularly tools, can automatically capture spatial attention.
  • This automatic attention capture facilitates visuomotor transformations necessary for grasping.
  • Visual sensory gain may influence not only perception but also object-directed actions.