TY - JOUR
T1 - Correlations between word intelligibility under reverberation and speech auditory brainstem responses in elderly listeners
AU - Fujihira, H.
AU - Shiraishi, K.
N1 - Funding Information:
This research was supported by Grant-in-Aid for Scientific Research (S) No. 19103003 and Grant-in-Aid for Scientific Research (C) No. 23611020 from the Japan Society for the Promotion of Science . We wish to thank Professor Gerard Remijn for his comments and English correction.
Publisher Copyright:
© 2014 International Federation of Clinical Neurophysiology.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Objective: To investigate the relationship between speech auditory brainstem responses (speech ABRs) and word intelligibility under reverberation in elderly adults. Methods: Word intelligibility for words under four reverberation times (RTs) of 0, 0.5, 1.0, 1.5. s, and speech ABRs to the speech syllable/da/ were obtained from 30 elderly listeners. Root mean square (RMS) amplitudes and discrete Fourier transform (DFT) amplitudes were calculated for ADD and SUB responses in the speech ABRs. Results: No significant correlations were found between the word intelligibility scores under reverberation and the ADD response components. However, in the SUB responses we found that the DFT amplitudes associated with H4-SUB, H5-SUB, H8-SUB, H9-SUB and H10-SUB significantly correlated with the word intelligibility scores for words under reverberation. With Bonferroni correction, the DFT amplitudes for H5-SUB and the intelligibility scores for words with the RT of 0.5s and 1.5s were significant. Conclusions: Word intelligibility under reverberation in elderly listeners is related to their ability to encode the temporal fine structure of speech. Significance: The results expand knowledge about subcortical responses of elderly listeners in daily-life listening situations. The SUB responses of speech ABR could be useful as an objective indicator to predict word intelligibility under reverberation.
AB - Objective: To investigate the relationship between speech auditory brainstem responses (speech ABRs) and word intelligibility under reverberation in elderly adults. Methods: Word intelligibility for words under four reverberation times (RTs) of 0, 0.5, 1.0, 1.5. s, and speech ABRs to the speech syllable/da/ were obtained from 30 elderly listeners. Root mean square (RMS) amplitudes and discrete Fourier transform (DFT) amplitudes were calculated for ADD and SUB responses in the speech ABRs. Results: No significant correlations were found between the word intelligibility scores under reverberation and the ADD response components. However, in the SUB responses we found that the DFT amplitudes associated with H4-SUB, H5-SUB, H8-SUB, H9-SUB and H10-SUB significantly correlated with the word intelligibility scores for words under reverberation. With Bonferroni correction, the DFT amplitudes for H5-SUB and the intelligibility scores for words with the RT of 0.5s and 1.5s were significant. Conclusions: Word intelligibility under reverberation in elderly listeners is related to their ability to encode the temporal fine structure of speech. Significance: The results expand knowledge about subcortical responses of elderly listeners in daily-life listening situations. The SUB responses of speech ABR could be useful as an objective indicator to predict word intelligibility under reverberation.
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U2 - 10.1016/j.clinph.2014.05.001
DO - 10.1016/j.clinph.2014.05.001
M3 - Article
C2 - 24906808
AN - SCOPUS:84917680935
SN - 1388-2457
VL - 126
SP - 96
EP - 102
JO - Electroencephalography and Clinical Neurophysiology - Electromyography and Motor Control
JF - Electroencephalography and Clinical Neurophysiology - Electromyography and Motor Control
IS - 1
ER -