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Differential effects of the Müller-Lyer illusion on reflexive and voluntary saccades.
J Vis. 2003 Dec 04; 3(11):751-60.JV

Abstract

Research has produced conflicting evidence as to whether saccade programming is or is not biased by perceptual illusions. However, previous studies have generally not distinguished between effects of illusory percepts on reflexive saccades, programmed automatically in response to an external visual signal, and voluntary saccades, programmed purposively to a location where no signal has occurred. Here we find that voluntary and reflexive saccades are differentially susceptible to the Müller-Lyer illusion; reflexive movements are reliably but modestly affected by the illusion, whereas voluntary movements show an effect similar to that of perceptual judgments. Results suggest that voluntary saccade programming occurs within a non-retinotopic spatial representation similar to that of visual consciousness, whereas reflexive saccade programming occurs within a representation integrating retinotopic and higher level spatial frames. The effects of the illusion on reflexive saccades are not subject to endogenous control, nor are they modulated by the strength of an exogenous target signal.

Authors+Show Affiliations

Department of Psychology, Mississippi State University, Mississippi State, MS, USA. jmccarley@psychology.msstate.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

14765958

Citation

McCarley, Jason S., et al. "Differential Effects of the Müller-Lyer Illusion On Reflexive and Voluntary Saccades." Journal of Vision, vol. 3, no. 11, 2003, pp. 751-60.
McCarley JS, Kramer AF, DiGirolamo GJ. Differential effects of the Müller-Lyer illusion on reflexive and voluntary saccades. J Vis. 2003;3(11):751-60.
McCarley, J. S., Kramer, A. F., & DiGirolamo, G. J. (2003). Differential effects of the Müller-Lyer illusion on reflexive and voluntary saccades. Journal of Vision, 3(11), 751-60.
McCarley JS, Kramer AF, DiGirolamo GJ. Differential Effects of the Müller-Lyer Illusion On Reflexive and Voluntary Saccades. J Vis. 2003 Dec 4;3(11):751-60. PubMed PMID: 14765958.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Differential effects of the Müller-Lyer illusion on reflexive and voluntary saccades. AU - McCarley,Jason S, AU - Kramer,Arthur F, AU - DiGirolamo,Gregory J, Y1 - 2003/12/04/ PY - 2003/04/04/received PY - 2004/2/10/pubmed PY - 2004/3/12/medline PY - 2004/2/10/entrez SP - 751 EP - 60 JF - Journal of vision JO - J Vis VL - 3 IS - 11 N2 - Research has produced conflicting evidence as to whether saccade programming is or is not biased by perceptual illusions. However, previous studies have generally not distinguished between effects of illusory percepts on reflexive saccades, programmed automatically in response to an external visual signal, and voluntary saccades, programmed purposively to a location where no signal has occurred. Here we find that voluntary and reflexive saccades are differentially susceptible to the Müller-Lyer illusion; reflexive movements are reliably but modestly affected by the illusion, whereas voluntary movements show an effect similar to that of perceptual judgments. Results suggest that voluntary saccade programming occurs within a non-retinotopic spatial representation similar to that of visual consciousness, whereas reflexive saccade programming occurs within a representation integrating retinotopic and higher level spatial frames. The effects of the illusion on reflexive saccades are not subject to endogenous control, nor are they modulated by the strength of an exogenous target signal. SN - 1534-7362 UR - https://www.unboundmedicine.com/medline/citation/14765958/Differential_effects_of_the_Müller_Lyer_illusion_on_reflexive_and_voluntary_saccades_ L2 - http://jov.arvojournals.org/article.aspx?doi=10.1167/3.11.9 DB - PRIME DP - Unbound Medicine ER -