Abstract :
[en] The aim of the present study is to contribute to the description of the
speech production deficits in French-speaking aphasic patients, so as
to shed light on their potential phonetic and/or phonological disorders. Acoustic studies of aphasics' speech productions remain relatively infrequent, especially in French, and when entering into the
specifics, often lead to inconsistent results. We conducted a multiplecase study on six aphasic patients, four with non-fluent aphasia and
two with fluent aphasia. They were administered a variety of language and neuropsychological tasks, then they participated in
a customized non-word repetition task. Acoustic analyses of their
speech productions were performed, focussing on VOT as the main
acoustic correlate of the voicing contrast for oral stops. Other atypicalities in their productions were also classified. Results showed variable and mainly 'mixed' phonetic-phonological impairment profiles
that differed from the traditional hypotheses made in the literature
about the speech deficits to be expected as a function of type of
aphasia. Our results support the use of acoustic analyses in order to
complete language examination in aphasic patients but also suggest
that the frontier between phonological and phonetic impairment is
not clear-cut. These outcomes are better accounted for by theories
and models postulating close relationships between the phonological and phonetic levels of processing.
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