Beal, D.S., Quraan, M.A., Cheyne, D.O., Taylor, M.J., Gracco, V.L., De Nil, L.F.
| Number | 1663 |
|---|---|
| Year | 2010 |
| Drawer | 28 |
| Entry Date | 11/01/2011 |
| Authors | Speech-induced suppression of evoked auditory fields in children who stutter |
| Contact | |
| Publication | NeuroImage |
| url | http://www.haskins.yale.edu/Reprints/HL1663.pdf |
| Abstract | Auditory responses to speech sounds that are self-initiated are suppressed compared to responses to the same speech sounds during passive listening. This phenomenon is referred to as speech-induced suppression, a potentially important feedback-mediated speech-motor control process. In an earlier study, we found that both adults who do and do not stutter demonstrated a reduced amplitude of the auditory M50 and M100 responses to speech during active production relative to passive listening. It is unknown if auditory responses to self-initiated speech-motor acts are suppressed in children or if the phenomenon differs between children who do and do not stutter. As stuttering is a developmental speech disorder, examining speech-induced suppression in children may identify possible neural differences underlying stuttering close to its time of onset. We used magnetoencephalography to determine the presence of speech-induced suppression in children and to characterize the properties of speech-induced suppression in children who stutter. We examined the auditory M50 as this was the earliest robust response reproducible across our child participants and the most likely to reflect a motor-to-auditory relation. Both children who do and do not stutter demonstrated speech-induced suppression of the auditory M50. However, children who stutter had a delayed auditory M50 peak latency to vowel sounds compared to children who do not stutter indicating a possible deficiency in their ability to efficiently integrate auditory speech information for the purpose of establishing neural representations of speech sounds. © |
| Notes |
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