The temporal relationship between speech auditory brainstem responses and the acoustic pattern of the phoneme /ba/ in normal-hearing adults

To investigate the temporal relationship between speech auditory brainstem responses and acoustic pattern of the phoneme /ba/. Speech elicited auditory brainstem responses (Speech ABR) to /ba/ were recorded in 23 normal-hearing subjects. Effect of stimulus intensity was assessed on Speech ABR compon...

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Bibliographic Details
Published in:Clinical neurophysiology Vol. 119; no. 4; pp. 922 - 933
Main Authors: Akhoun, I., Gallégo, S., Moulin, A., Ménard, M., Veuillet, E., Berger-Vachon, C., Collet, L., Thai-Van, H.
Format: Journal Article
Language:English
Published: Shannon Elsevier Ireland Ltd 01.04.2008
Elsevier Science
Subjects:
Acoustic Stimulation
Adult
Auditory brainstem response
Biological and medical sciences
Brain Mapping
Consonant–vowels
Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation
Electrodiagnosis. Electric activity recording
Electroencephalography
Evoked Potentials, Auditory - physiology
Evoked Potentials, Auditory, Brain Stem - physiology
Female
Frequency following response
Fundamental and applied biological sciences. Psychology
Humans
Investigative techniques, diagnostic techniques (general aspects)
Male
Medical sciences
Middle Aged
Nervous system
Neurology
Periodicity
Speech - physiology
Speech Perception - physiology
Speech processing
Temporal coding
Vertebrates: nervous system and sense organs
Auditory brainstem response
Consonant–vowels
Frequency following response
Speech processing
Temporal coding
Periodicity
Waveform
Human
Electrophysiology
Stimulus intensity
Electrodiagnosis
Hearing
Consonant
Acoustic stimulus
Consonant-vowels
Coding
Vowel
Auditory evoked potential
Speech
Low pass filter
ISSN:1388-2457, 1872-8952
Online Access:Get full text
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Summary:To investigate the temporal relationship between speech auditory brainstem responses and acoustic pattern of the phoneme /ba/. Speech elicited auditory brainstem responses (Speech ABR) to /ba/ were recorded in 23 normal-hearing subjects. Effect of stimulus intensity was assessed on Speech ABR components latencies in 11 subjects. The effect of different transducers on electromagnetic leakage was also measured. Speech ABR showed a reproducible onset response (OR) 6 ms after stimulus onset. The frequency following response (FFR) waveform mimicked the 500 Hz low pass filtered temporal waveform of phoneme /ba/ with a latency shift of 14.6 ms. In addition, the OR and FFR latencies decreased with increasing stimulus intensity, with a greater rate for FFR (−1.4 ms/10 dB) than for OR (−0.6 ms/10 dB). A close relationship was found between the pattern of the acoustic stimulus and the FFR temporal structure. Furthermore, differences in latency behaviour suggest different generation mechanisms for FFR and OR. The results provided further insight into the temporal encoding of basic speech stimulus at the brainstem level in humans.
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ISSN:1388-2457
1872-8952
DOI:10.1016/j.clinph.2007.12.010