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Relationship between stuttering severity and brainstem-evoked response testing.

I M Blood, G W Blood

Perceptual and Motor Skills

|December 1, 1984

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Adult stutterers exhibit prolonged brainstem central conduction times. This auditory pathway difference, measured by interpeak latency (IPL), was observed in most stutterers, regardless of stuttering severity.

Area of Science:

Neuroscience
Speech-language pathology
Auditory processing

Background:

Stuttering is a complex speech disorder.
Auditory processing differences are suspected in stuttering.
Brainstem-evoked response testing (BER) assesses auditory pathway function.

Purpose of the Study:

To investigate auditory pathway function in adult stutterers using BER.
To compare central conduction time between stutterers and non-stutterers.

Main Methods:

Brainstem-evoked response testing (BER) was conducted on 8 adult stutterers and 8 non-stutterers.
Interpeak latency (IPL) differences between Waves I to V were analyzed to measure central conduction time.

Main Results:

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Stutterers showed significantly prolonged central conduction time compared to non-stutterers.
Abnormalities were unilateral in 5 stutterers and bilateral in 3.
No correlation was found between BER findings and stuttering severity.

Conclusions:

Adult stutterers may have prolonged central auditory conduction time.
BER can reveal subclinical auditory processing differences in stuttering.
These findings contribute to understanding the neurophysiological underpinnings of stuttering.