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Audiovisual synchrony perception for music, speech, and object actions.

机译：音乐，语音和对象动作的视听同步感知。

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We investigated the perception of synchrony for complex audiovisual events. In Experiment 1, a series of music (guitar and piano), speech (sentences), and object action video clips were presented at a range of stimulus onset asynchronies (SOAs) using the method of constant stimuli. Participants made unspeeded temporal order judgments (TOJs) regarding which stream (auditory or visual) appeared to have been presented first. Temporal discrimination accuracy was significantly better for the object actions than for the speech video clips, and both were significantly better than for the music video clips. In order to investigate whether or not these differences in TOJ performance were driven by differences in stimulus familiarity, we conducted a second experiment using brief speech (syllables), music (guitar), and object action video clips of fixed duration together with temporally reversed (i.e., less familiar) versions of the same stimuli. The results showed no main effect of stimulus type on temporal discrimination accuracy. Interestingly, however, reversing the video clips resulted in a significant decrement in temporal discrimination accuracy as compared to the normally presented for the music and object actions clips, but not for the speech stimuli. Overall, our results suggest that cross-modal temporal discrimination performance is better for audiovisual stimuli of lower complexity as compared to stimuli having continuously varying properties (e.g., syllables versus words and/or sentences).
机译：我们调查了复杂视听事件的同步感。在实验1中，使用恒定刺激的方法，在一系列刺激发作异步（SOA）上呈现了一系列音乐（吉他和钢琴），语音（句子）和目标动作视频剪辑。参与者对出现在哪个流（听觉或视觉）上的速度做出了快速的时间顺序判断（TOJ）。对象动作的时间分辨精度明显优于语音视频剪辑，并且两者均明显优于音乐视频剪辑。为了研究TOJ性能的这些差异是否是由刺激性熟悉程度的差异引起的，我们进行了第二项实验，使用简短语音（音节），音乐（吉他）和固定时间的物体动作视频片段以及暂时颠倒的（例如，不太熟悉的相同刺激的版本。结果表明，刺激类型对时间分辨准确性没有主要影响。然而，有趣的是，与通常针对音乐和对象动作剪辑而不是语音刺激呈现的视频剪辑相比，反转视频剪辑会导致时间辨别准确性显着降低。总体而言，我们的结果表明，与具有连续变化的属性（例如，音节与单词和/或句子）相比，对于复杂度较低的视听刺激，跨模式的时间区分性能更好。

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