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Related Experiment Videos

[Egocentric reference and represented space].

M Jeannerod1, B Biguer

  • 1Laboratoire de Neuropsychologie Expérimentale, INSERM U94, Bron, France.

Revue Neurologique
|January 1, 1989
PubMed
Summary
This summary is machine-generated.

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Right-handed individuals show a slight leftward bias when pointing straight ahead, indicating spatial awareness differences. Visual targets also shift this perceived body midline, affecting movement direction coding.

Area of Science:

  • Neuroscience
  • Human motor control
  • Spatial cognition

Context:

  • Investigating the egocentric reference frame in healthy adults.
  • Examining manual pointing accuracy to the body's sagittal plane.
  • Assessing the influence of visual targets on spatial orientation.

Purpose:

  • To measure the subjective estimation of the egocentric reference point.
  • To identify biases in pointing towards the straight-ahead direction.
  • To understand how visual hemifields affect the perceived body midline.

Summary:

  • Normal right-handed subjects exhibited a small leftward bias when pointing straight ahead with their right hand.
  • No significant bias was observed when using the left hand for pointing.

Related Experiment Videos

  • Fixating visual targets in either hemispace systematically shifted the egocentric reference towards the contralateral side.

    • Impact:

    • Provides insights into the neural mechanisms of directional coding for movements.
    • Contributes to understanding the interplay between visual perception and motor control.
    • Highlights potential asymmetries in spatial processing between the left and right hands.