SLHS 2204 Lecture Notes - Lecture 11: Phonotactics, English Language In England, Electrophysiology

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What we have learned from erp studies in monolingual english babies. Brain responses suggested the brain was still open or able to differentiate between native and non-native speech sounds. The interesting pattern in brain responses was found in the erps associated with non-native speech sound. If the brain is able to phonemically discriminate two sounds with low attentional demands then: The deviant is more negative than the standard. Infants word productions abilities were followed for 20 months after erp measure were taken. Number of words produced as a function of age and erp. P-responders seem to be going through a perceptual narrowing process while n-responders are not. Positivity that gets reduced and develops into a later negativity is the key. In terms of perceptual narrowing it seems that the key is form early-positive to later-negative for the native speech sounds. Not due to acoustic salience among stimuli. First step in the perceptual narrowing process.

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