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Titre : | Effect of pre-transition stimulus duration on acoustic change complex (2013) |
Auteurs : | M.K. Ganapathy ; Vijaya Kumar Narne ; Mohan Kumar Kalaiah |
Type de document : | Article |
Dans : | International Journal of Audiology IJA (Vol.52, n°5, May 2013) |
Langues: | Anglais |
Résumé : | Objective: To investigate the effect of pre-transition duration on acoustic change complex (ACC) for speech and tonal stimulus. Design: Cortical potentials were recorded for consonant-vowel syllable and tonal complex stimuli with varying pre-transition durations. Study sample: Ten individuals (three male and seven female) in the age range from 18 to 26 years, with normal hearing sensitivity, participated in the study. Results: The results revealed that a minimum pre-transition duration of 100 ms for tonal stimulus (with spectral change) and 80 ms for consonant-vowel syllable is necessary in order to elicit ACC. The latency of N11 and P21, which is the response for change within the ongoing stimulus, increased with increase in pre-transition duration. The amplitude of the evoked responses did not show any significant change. Conclusions: It was found that minimum pre-transition duration required in eliciting ACC for speech and non-speech stimulus is not same. The speech stimulus required lesser duration of pre-transition than non-speech stimulus. Further studies regarding the acoustic aspects of sound on CAEP in isolation are warranted. |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.tandfonline.com/doi/full/10.3109/14992027.2012.760850 |
Exemplaires (1)
Cote | Support | Localisation | Section | Disponibilité |
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International journal of audiology IJA. Vol.52, n°5 (May 2013) | Périodique papier | Ixelles | Rez | Consultation sur place uniquement Exclu du prêt |