TY - JOUR
T1 - Fooling the Eyes
T2 - The Influence of a Sound-Induced Visual Motion Illusion on Eye Movements
AU - Fracasso, Alessio
AU - Targher, Stefano
AU - Zampini, Massimiliano
AU - Melcher, David
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013/4/26
Y1 - 2013/4/26
N2 - The question of whether perceptual illusions influence eye movements is critical for the long-standing debate regarding the separation between action and perception. To test the role of auditory context on a visual illusion and on eye movements, we took advantage of the fact that the presence of an auditory cue can successfully modulate illusory motion perception of an otherwise static flickering object (sound-induced visual motion effect). We found that illusory motion perception modulated by an auditory context consistently affected saccadic eye movements. Specifically, the landing positions of saccades performed towards flickering static bars in the periphery were biased in the direction of illusory motion. Moreover, the magnitude of this bias was strongly correlated with the effect size of the perceptual illusion. These results show that both an audio-visual and a purely visual illusion can significantly affect visuo-motor behavior. Our findings are consistent with arguments for a tight link between perception and action in localization tasks.
AB - The question of whether perceptual illusions influence eye movements is critical for the long-standing debate regarding the separation between action and perception. To test the role of auditory context on a visual illusion and on eye movements, we took advantage of the fact that the presence of an auditory cue can successfully modulate illusory motion perception of an otherwise static flickering object (sound-induced visual motion effect). We found that illusory motion perception modulated by an auditory context consistently affected saccadic eye movements. Specifically, the landing positions of saccades performed towards flickering static bars in the periphery were biased in the direction of illusory motion. Moreover, the magnitude of this bias was strongly correlated with the effect size of the perceptual illusion. These results show that both an audio-visual and a purely visual illusion can significantly affect visuo-motor behavior. Our findings are consistent with arguments for a tight link between perception and action in localization tasks.
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U2 - 10.1371/journal.pone.0062131
DO - 10.1371/journal.pone.0062131
M3 - Article
C2 - 23637981
AN - SCOPUS:84876846652
VL - 8
JO - PLoS One
JF - PLoS One
SN - 1932-6203
IS - 4
M1 - e62131
ER -