Temporal auditory capture does not affect the time course of saccadic mislocalization of visual stimuli

被引:5
|
作者
Binda, Paola [1 ,2 ]
Morrone, M. Concetta [3 ,4 ]
Burr, David C. [5 ,6 ,7 ]
机构
[1] Univ Vita Salute San Raffaele, Dept Psychol, Milan, Italy
[2] Italian Inst Technol, IIT Network, Res Unit Mol Neurosci, Genoa, Italy
[3] Univ Pisa, Dept Physiol Sci, Pisa, Italy
[4] Sci Inst Stella Maris, Pisa, Italy
[5] Univ Florence, Dept Psychol, Florence, Italy
[6] CNR, Ist Neurosci, I-56124 Pisa, Italy
[7] Univ Western Australia, Dept Psychol, Perth, WA 6009, Australia
来源
JOURNAL OF VISION | 2010年 / 10卷 / 02期
关键词
spatial vision; temporal vision; eye movements; multisensory; saccadic mislocalization; space-time; EYE-MOVEMENTS; CROSSMODAL INTERACTION; RATE PERCEPTION; SPACE; VENTRILOQUISM; DISTORTIONS; INFORMATION; INTEGRATION; POSITION; FLICKER;
D O I
10.1167/10.2.7
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
Irrelevant sounds can "capture" visual stimuli to change their apparent timing, a phenomenon sometimes termed "temporal ventriloquism". Here we ask whether this auditory capture can alter the time course of spatial mislocalization of visual stimuli during saccades. We first show that during saccades, sounds affect the apparent timing of visual flashes, even more strongly than during fixation. However, this capture does not affect the dynamics of perisaccadic visual distortions. Sounds presented 50 ms before or after a visual bar (that change perceived timing of the bars by more than 40 ms) had no measurable effect on the time courses of spatial mislocalization of the bars, in four subjects. Control studies showed that with barely visible, low-contrast stimuli, leading, but not trailing, sounds can have a small effect on mislocalization, most likely attributable to attentional effects rather than auditory capture. These findings support previous studies showing that integration of multisensory information occurs at a relatively late stage of sensory processing, after visual representations have undergone the distortions induced by saccades.
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页码:1 / 13
页数:13
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