van Wassenhove Virginie, Grant Ken W, Poeppel David
Department of Psychology, University of California at Los Angeles, CA 90095, USA.
Neuropsychologia. 2007 Feb 1;45(3):598-607. doi: 10.1016/j.neuropsychologia.2006.01.001. Epub 2006 Mar 10.
Forty-three normal hearing participants were tested in two experiments, which focused on temporal coincidence in auditory visual (AV) speech perception. In these experiments, audio recordings of/pa/and/ba/were dubbed onto video recordings of /ba/or/ga/, respectively (ApVk, AbVg), to produce the illusory "fusion" percepts /ta/, or /da/ [McGurk, H., & McDonald, J. (1976). Hearing lips and seeing voices. Nature, 264, 746-747]. In Experiment 1, an identification task using McGurk pairs with asynchronies ranging from -467 ms (auditory lead) to +467 ms was conducted. Fusion responses were prevalent over temporal asynchronies from -30 ms to +170 ms and more robust for audio lags. In Experiment 2, simultaneity judgments for incongruent and congruent audiovisual tokens (AdVd, AtVt) were collected. McGurk pairs were more readily judged as asynchronous than congruent pairs. Characteristics of the temporal window over which simultaneity and fusion responses were maximal were quite similar, suggesting the existence of a 200 ms duration asymmetric bimodal temporal integration window.
43名听力正常的参与者在两项实验中接受了测试，这两项实验聚焦于视听（AV）言语感知中的时间一致性。在这些实验中，/pa/和/ba/的音频记录分别被配音到/ba/或/ga/的视频记录上（ApVk、AbVg），以产生虚幻的“融合”感知/ta/或/da/[麦古尔克，H.，& 麦克唐纳，J.（1976年）。听唇音与看口型。《自然》，264，746 - 747]。在实验1中，使用了异步范围从 - 467毫秒（听觉领先）到 + 467毫秒的麦古尔克配对进行识别任务。在从 - 30毫秒到 + 170毫秒的时间异步范围内，融合反应普遍存在，并且对于音频延迟更为强烈。在实验2中，收集了对不一致和一致的视听标记（AdVd, AtVt）的同时性判断。麦古尔克配对被判断为异步的比判断为一致的更容易。同时性和融合反应达到最大值的时间窗口特征非常相似，表明存在一个持续时间为200毫秒的不对称双峰时间整合窗口。
