Visual speech processing: Word‐decoding and word‐discrimination related to sentence‐based speechreading and hearing‐impairment
作者:
BJÖRN LYXELL,
JERKER RÖNNBERG,
期刊:
Scandinavian Journal of Psychology
(WILEY Available online 1991)
卷期:
Volume 32,
issue 1
页码: 9-17
ISSN:0036-5564
年代: 1991
DOI:10.1111/j.1467-9450.1991.tb00847.x
出版商: Blackwell Publishing Ltd
关键词: Word‐decoding;word‐discrimination;speech‐reading;hearing‐impairment
数据来源: WILEY
摘要:
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
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