Temporal control in the voicing contrast: Evidence from surgery-related apraxia of speech

The goal of this study was to investigate the phonetic realisation of the voicing feature in two tumour resection-related Spanish speakers with apraxia of speech. Temporal parameters related to the phonological contrast of voicing in Spanish have been analysed for intervocalic voiced and voiceless o...

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Bibliographic Details
Published in:Clinical linguistics & phonetics 2018-01, Vol.32 (2), p.148-165
Main Authors: Marczyk, Anna, Machuca, María J.
Format: Article
Language:English
Subjects:
Adult
Apraxia
Apraxia of speech
Apraxias - surgery
compensatory strategies
Cues
Female
Humans
Nonsense words
Obstruents
Phonetics
Phonology
Sound duration
Spain
Spanish language
Speech
Speech errors
Speech Perception
Stops
Surgery
Voice - physiology
Voice onset time (VOT)
Voicing
Vowels
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Summary:The goal of this study was to investigate the phonetic realisation of the voicing feature in two tumour resection-related Spanish speakers with apraxia of speech. Temporal parameters related to the phonological contrast of voicing in Spanish have been analysed for intervocalic voiced and voiceless obstruents embedded in isolated words and nonwords, and compared with data collected from healthy speakers. Results indicate that in devoiced productions, where VOT values fitted the 'voiceless stops' category, vowel duration values matched those of voiced stops and suggested the preservation of contextual voicing cues. An attempt at preserving a consonant/vowel duration ratio consistent with aerodynamic predictions for voicing contrast has been observed in apraxic correct production as well as in devoicing errors, but not in the control group, which could be interpreted as a compensatory mechanism.
ISSN:0269-9206
1464-5076
DOI:10.1080/02699206.2017.1334091