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The hand knows something that the eye does not: reaching movements resist the Müller-Lyer illusion whether or not the target is foveated.
Neurosci Lett. 2007 Oct 16; 426(2):111-6.NL

Abstract

Previous reports suggest that saccades are affected by the Müller-Lyer (ML) pictorial illusion, whereas reaching movements are not. It is unclear if the resistance of reaching to illusions depends on the concurrent engagement of the oculomotor system. Here we show that the endpoints and kinematics of reaching movements were unaffected by a peripherally viewed ML stimulus regardless of whether or not a concurrent saccade was carried out. Primary saccade endpoints were affected by the ML stimulus but secondary saccades were not. Perceptual judgments of target location were influenced by the ML stimulus in the expected direction. The resistance of reaching movements to pictorial illusions does not appear to depend on the concurrent engagement of the oculomotor system. Implications for models of oculomotor and upper limb control are discussed.

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Authors+Show Affiliations

Thompson AA
School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada.
Westwood DA
No affiliation info available

MeSH

AdultFemaleHandHumansMaleMiddle AgedMovementOptical IllusionsPhotic StimulationPsychomotor PerformanceSaccadesSpace Perception

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17890003

Citation

Thompson, Aidan A., and David A. Westwood. "The Hand Knows Something That the Eye Does Not: Reaching Movements Resist the Müller-Lyer Illusion Whether or Not the Target Is Foveated." Neuroscience Letters, vol. 426, no. 2, 2007, pp. 111-6.
Thompson AA, Westwood DA. The hand knows something that the eye does not: reaching movements resist the Müller-Lyer illusion whether or not the target is foveated. Neurosci Lett. 2007;426(2):111-6.
Thompson, A. A., & Westwood, D. A. (2007). The hand knows something that the eye does not: reaching movements resist the Müller-Lyer illusion whether or not the target is foveated. Neuroscience Letters, 426(2), 111-6.
Thompson AA, Westwood DA. The Hand Knows Something That the Eye Does Not: Reaching Movements Resist the Müller-Lyer Illusion Whether or Not the Target Is Foveated. Neurosci Lett. 2007 Oct 16;426(2):111-6. PubMed PMID: 17890003.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The hand knows something that the eye does not: reaching movements resist the Müller-Lyer illusion whether or not the target is foveated. AU - Thompson,Aidan A, AU - Westwood,David A, Y1 - 2007/09/08/ PY - 2007/06/11/received PY - 2007/08/27/revised PY - 2007/09/01/accepted PY - 2007/9/25/pubmed PY - 2008/1/18/medline PY - 2007/9/25/entrez SP - 111 EP - 6 JF - Neuroscience letters JO - Neurosci Lett VL - 426 IS - 2 N2 - Previous reports suggest that saccades are affected by the Müller-Lyer (ML) pictorial illusion, whereas reaching movements are not. It is unclear if the resistance of reaching to illusions depends on the concurrent engagement of the oculomotor system. Here we show that the endpoints and kinematics of reaching movements were unaffected by a peripherally viewed ML stimulus regardless of whether or not a concurrent saccade was carried out. Primary saccade endpoints were affected by the ML stimulus but secondary saccades were not. Perceptual judgments of target location were influenced by the ML stimulus in the expected direction. The resistance of reaching movements to pictorial illusions does not appear to depend on the concurrent engagement of the oculomotor system. Implications for models of oculomotor and upper limb control are discussed. SN - 0304-3940 UR - https://www.unboundmedicine.com/medline/citation/17890003/The_hand_knows_something_that_the_eye_does_not:_reaching_movements_resist_the_Müller_Lyer_illusion_whether_or_not_the_target_is_foveated_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3940(07)00951-2 DB - PRIME DP - Unbound Medicine ER -