Summary
Oculomotor tracking of one's unseen hand is greatly enhanced when a positive afterimage of the arm is projected onto its changing apparent position. The “afterimage arm” also influences the perception of real arm motion. The nature of this influence indicates that sense of effort or will derives from spatial computations potentially involving sensory and motor information about the ongoing orientation of the entire body.
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Support was provided by NASA contract NAS 9-15147
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Lackner, J.R., Mather, J.A. Eye-hand tracking using afterimages. Exp Brain Res 44, 138–142 (1981). https://doi.org/10.1007/BF00237334
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DOI: https://doi.org/10.1007/BF00237334