1. Analyse du Voice Onset Time
avec VOCALAB
Etienne SICARD
Professeur INSA Toulouse
Mai 2017

2. Définition Duration of time between the
opening of the lips (a,a’) and the regular
striations representing the vocal fold vibrations (b, b’)
Voice onset time in aphasia, apraxia of speech and dysarthria: a review, P Auzou, - Clinical Linguistics 2000

3. Références
Voice onset time in aphasia, apraxia of speech and dysarthria: a review, P Auzou, - Clinical Linguistics 2000

4. VOT in Dysartria /p/t/k/
Voice onset time in aphasia, apraxia of speech and dysarthria: a review, P Auzou, - Clinical Linguistics 2000

5. /t/ou/
/ou/
/t/
VOT 40ms faster than reference (60ms)
TTT001 – LEC

6. /t/an/
/an/
/t/
TTT002 – LEC

7. VOT in Dysarthria – PD/PSP/MSA
voiceless plosive /t/
voiced plosive /d/
HC = Normal
Tykalova, T., Rusz, J.,(2017). Distinct patterns of imprecise consonant articulation among Parkinson’s disease, progressive supranuclear palsy and multiple system atrophy. Brain and language, 165, 1-9.
PD = Idiomatic Parkinson
PSP = progressive supranuclear palsy
MSA= multiple system atrophy

8. VOT in Dysarthria – PD/PSP/MSA
voiceless plosive /t/
Tykalova, T., Rusz, J.,(2017). Distinct patterns of imprecise consonant articulation among Parkinson’s disease, progressive supranuclear palsy and multiple system atrophy. Brain and language, 165, 1-9.
voiced plosive /d/
Voiceless plosive VOT more prolonged in both PSP and MSA compared to PD (greater severity of dysarthria and slower articulation)
Voiced plosive VOT significantly shorter only in MSA (damage to cerebellar structures)

9. Merci pour votre attention