Beat gestures—spontaneously produced biphasic movements of the hand—are among the most frequently encountered co-speech gestures in human communication. They are closely temporally aligned to the prosodic characteristics of the speech signal, typically occurring on lexically stressed syllables. Despite their prevalence across speakers of the world's languages, how beat gestures impact spoken word recognition is unclear. Can these simple ‘flicks of the hand' influence speech perception? Across a range of experiments, we demonstrate that beat gestures influence the explicit and implicit perception of lexical stress (e.g. distinguishing OBject from obJECT), and in turn can influence what vowels listeners hear. Thus, we provide converging evidence for a manual McGurk effect: relatively simple and widely occurring hand movements influence which speech sounds we hear.

中文翻译：

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节拍手势会影响您听到的语音

节拍手势（手部自发产生的双相运动）是人类交流中最常遇到的共同语音手势之一。它们在时间上与语音信号的韵律特征紧密对齐，通常出现在词汇重读的音节上。尽管它们在世界语言的使用者中很普遍，但节拍手势如何影响口语单词识别尚不清楚。这些简单的“挥手”会影响言语感知吗？在一系列实验中，我们证明节拍手势会影响词汇重音的显性和隐性感知（例如区分 OBject 和 object），进而影响听者听到的元音。因此，我们为手动 McGurk 效应提供了汇聚证据：