Ito Takayuki, Tiede Mark, Ostry David J
Haskins Laboratories, 300 George Street, New Haven, CT 06511, USA.
Proc Natl Acad Sci U S A. 2009 Jan 27;106(4):1245-8. doi: 10.1073/pnas.0810063106. Epub 2009 Jan 21.
Somatosensory signals from the facial skin and muscles of the vocal tract provide a rich source of sensory input in speech production. We show here that the somatosensory system is also involved in the perception of speech. We use a robotic device to create patterns of facial skin deformation that would normally accompany speech production. We find that when we stretch the facial skin while people listen to words, it alters the sounds they hear. The systematic perceptual variation we observe in conjunction with speech-like patterns of skin stretch indicates that somatosensory inputs affect the neural processing of speech sounds and shows the involvement of the somatosensory system in the perceptual processing in speech.
来自面部皮肤和声道肌肉的体感信号在语音产生过程中提供了丰富的感觉输入源。我们在此表明，体感系统也参与语音感知。我们使用一种机器人设备来创建通常会伴随语音产生的面部皮肤变形模式。我们发现，当人们听单词时我们拉伸面部皮肤，这会改变他们听到的声音。我们观察到的与类似语音的皮肤拉伸模式相关的系统性感知变化表明，体感输入会影响语音声音的神经处理，并表明体感系统参与了语音的感知处理。
