Emmorey Karen, Bosworth Rain, Kraljic Tanya
School of Speech, Language, and Hearing Sciences, San Diego State University.
J Mem Lang. 2009 Oct 1;61(3):398-411. doi: 10.1016/j.jml.2009.06.001.
The perceptual loop theory of self-monitoring posits that auditory speech output is parsed by the comprehension system. For sign language, however, visual input from one's own signing is distinct from visual input received from another's signing. Two experiments investigated the role of visual feedback in the production of American Sign Language (ASL). Experiment 1 revealed that signers were poor at recognizing ASL signs when viewed as they would appear during self-produced signing. Experiment 2 showed that the absence or blurring of visual feedback did not affect production performance when deaf signers learned to reproduce signs from Russian Sign Language, and production performance of hearing non-signers was slightly worse with visual feedback. Signers may rely primarily on somatosensory feedback when monitoring language output, and if the perceptual loop theory is to be maintained, the comprehension system must be able to parse a somatosensory signal as well as an external perceptual signal for both sign and speech.
自我监测的感知循环理论认为，听觉言语输出由理解系统进行解析。然而，对于手语而言，来自自身手语的视觉输入与从他人手语接收的视觉输入是不同的。两项实验研究了视觉反馈在美国手语（ASL）产生过程中的作用。实验1表明，当以自我产生手语时会出现的方式观看时，手语者识别ASL手势的能力较差。实验2表明，当失聪手语者学习复制俄罗斯手语的手势时，视觉反馈的缺失或模糊不会影响产生表现，而有视觉反馈时，听力正常的非手语者的产生表现会稍差一些。手语者在监测语言输出时可能主要依赖体感反馈，如果要维持感知循环理论，那么理解系统必须能够解析体感信号以及用于手语和言语的外部感知信号。
