Lyxell B, Rönnberg J
Department of Education and Psychology, Linköping University, Sweden.
Scand J Psychol. 1991;32(1):9-17. doi: 10.1111/j.1467-9450.1991.tb00847.x.
Two aspects of visual speech processing in speechreading (word decoding and word discrimination) were tested in a group of 24 normal hearing and a group of 20 hearing-impaired subjects. Word decoding and word discrimination performance were independent of factors related to the impairment, both in a quantitative and a qualitative sense. Decoding skill, but not discrimination skill, was associated with sentence-based speechreading. The results were interpreted such that, in order to represent a critical component process in sentence-based speechreading, the visual speech perception task must entail lexically induced processing as a task-demand. The theoretical status of the word decoding task as one operationalization of a speech decoding module was discussed (Fodor, 1983). An error analysis of performance in the word decoding/discrimination tasks suggested that the perception of heard stimuli, as well as the perception of lipped stimuli, were critically dependent on the same features; that is, the temporally initial phonetic segment of the word (cf. Marslen-Wilson, 1987). Implications for a theory of visual speech perception were discussed.
在一组24名听力正常的受试者和一组20名听力受损的受试者中，对唇读中视觉言语处理的两个方面（单词解码和单词辨别）进行了测试。在数量和质量方面，单词解码和单词辨别表现均与听力损伤相关因素无关。解码技能而非辨别技能与基于句子的唇读相关。对结果的解释是，为了在基于句子的唇读中代表一个关键的组成过程，视觉言语感知任务必须将词汇诱导处理作为任务要求。讨论了单词解码任务作为言语解码模块一种操作化的理论地位（福多尔，1983）。对单词解码/辨别任务表现的错误分析表明，对听到刺激的感知以及对唇动刺激的感知，都严重依赖于相同的特征；也就是说，单词在时间上的起始语音片段（参见马斯伦 - 威尔森，1987）。讨论了对视觉言语感知理论的启示。
