000			01656naa a22002057a 4500
003			OSt
005			20150123155946.0
008			150123b xxu||||| |||| 00| 0 eng d
040			_cNational Acoustic Laboratory
100			_aBELLIER, LUDOVIC
245			_aTopographic recordings of auditory evoked potentials to speech: Subcortical and cortical responses
520	3		_aTopographies of speech auditory brainstem response (speech ABR), a fine electrophysiological marker of speech encoding, have never been described. Yet, they could provide useful information to assess speech ABR generators and better characterize populations of interest (e.g., musicians, dyslexics). We present here a novel methodology of topographic speech ABR recording, using a 32-channel low sampling rate (5 kHz) EEG system. Quality of speech ABRs obtained with this conventional multichannel EEG system were compared to that of signals simultaneously recorded with a high sampling rate (13.3 kHz) EEG system. Correlations between speech ABRs recorded with the two systems revealed highly similar signals, without any significant difference between their signal-to-noise ratios (SNRs). Moreover, an advanced denoising method for multichannel data (denoising source separation) significantly improved SNR and allowed topography of speech ABR to be recovered.
650			_aSpeech ABR,
650			_aFFR,
650			_a Event-related potential,
650			_a Brainstem
773	0		_g2014 _tPsychophysiology, •• (2014),
856			_uhttp://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/93/Topgraphicall.pdf?sequence=1&isAllowed=y
942			_2udc _cJOURNALS
999			_c2369 _d2369