Temporal Encoding of Voice Onset Time in Young Children
نویسنده
چکیده
Objective: Voice onset time (VOT) is an important parameter of speech that denotes the time interval between consonant onset and the onset of low frequency periodicity generated. In this study we examined the temporal encoding of voice onset time in the cortical auditory evoked response (CAEP) of young children. Methods: Scalp recoded CAEP were measured in 18 children aged from 5-8 participated (n=18). The N2 latency was evoked using differences in voice-onset-times (VOTs) using stop consonant-vowel syllables /ga/-/ka/. Results: A significant and systematic shift in the N2 latency was observed for differences in VOT. Conclusions: Our results demonstrate that temporal encoding of VOT exists in the developing cortical evoked response.
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بررسی ویژگیهای آکوستیکی مربوط به کنترل حرکتی گفتار در کودکان لکنتی و غیرلکنتی
Objective Stuttering is a developmental disorder of speech fluency with unknown causes. One of the proposed theories in this field is deficits in speech motor control that is associated with damaged control, timing, and coordination of the speech muscles. Fundamental frequency, fundamental frequency range, intensity, intensity range, and voice onset time are the most important acoustic componen...
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متن کاملThe representation of voice onset time in the cortical auditory evoked potentials of young children.
OBJECTIVE The aim of this study was to determine whether, in young children, a cortical neurophysiologic representation of the voicing status of a stop consonant could be found in the absence of the N1 component in the cortical auditory evoked potential (CAEP). In adults, a 'double-on' N1 response is often considered a cortical marker of VOT representation. METHODS Scalp-recorded CAEPs were m...
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This study tests the hypothesis that temporal response patterns in primary auditory cortex are potentially relevant for voice onset time (VOT) encoding in two related experiments. The first experiment investigates whether temporal responses reflecting VOT are modulated in a way that can account for boundary shifts that occur with changes in first formant (F1) frequency, and by extension, conson...
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This paper investigates the effect of gender on voice onset time distribution at three stages of speech development. Two subject groups consisting of children, aged approximately 3 and 9 years, were compared to adult speakers regarding voice onset time of initial plosives. The results showed significant gender effects in the aspirated plosives in the young subjects that were not present in the ...
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