Multichannel frequency-domain Hotelling's T2 test for detection of envelope following responses to natural vowels

Vanheusden, F.J. ORCID: 0000-0003-2369-6189, Bell, S.L., Chesnaye, M.A. and Simpson, D.M., 2017. Multichannel frequency-domain Hotelling's T2 test for detection of envelope following responses to natural vowels. In: XXV International Evoked Response Audiometry Study Group (IERASG) Biennial Symposium, Warsaw, Poland, 21-25 May 2017.

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Abstract

Objectives: A multichannel frequency-domain Hotelling’s T2 (MCHT2) method for envelope following response detection is introduced and its sensitivity compared to a Fourier Analyzer (FA), Magnitude Squared Coherence (MSC), and single-channel Hotelling’s T2 (HT2).

Methods: EEG data were collected from 12 normal hearing adults during auditory stimulation with 4 repeated vowels. Each stimulus was presented 220 times with both polarities. Response detection was compared between algorithms based on detection rate and time.

Results: A five-channel MCHT2 showed a significantly higher detection rate compared to FA (27% increase) and MSC (24%) detection rates. Both HT2 and MCHT2 showed a significant decrease in mean detection time compared to the FA (29% and 39%, respectively).

Conclusion: MCHT2 analysis improves sensitivity in the detection of envelope following responses to natural vowels compared to single-channel methods, without increasing computational complication.

Item Type:	Conference contribution
Description:	Abstract published in Journal of Hearing Science 7 (2), p.50
Creators:	Vanheusden, F.J., Bell, S.L., Chesnaye, M.A. and Simpson, D.M.
Date:	2017
Divisions:	Schools > School of Science and Technology
Record created by:	Jonathan Gallacher
Date Added:	14 Dec 2018 09:20
Last Modified:	14 Dec 2018 10:15
URI:	https://irep.ntu.ac.uk/id/eprint/35326

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