Cortical Responses Time-Locked to Continuous Speech in the High-Gamma Band Depend on Selective Attention DOI Creative Commons
Vrishab Commuri, Joshua P. Kulasingham, Jonathan Z. Simon

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: July 24, 2023

Auditory cortical responses to speech obtained by magnetoencephalography (MEG) show robust tracking the speaker's fundamental frequency in high-gamma band (70-200 Hz), but little is currently known about whether such depend on focus of selective attention. In this study 22 human subjects listened concurrent, fixed-rate, from male and female speakers, were asked selectively attend one speaker at a time, while their neural recorded with MEG. The pitch range coincided lower band, whereas higher had much less overlap, only upper end band. Neural analyzed using temporal response function (TRF) framework. As expected, demonstrate male's speech, peak latency approximately 40 ms. Critically, magnitude depends attention: significantly greater when attended than it not attended, under acoustically identical conditions. This clear demonstration that even very early auditory are influenced top-down, cognitive, processing mechanisms.

Language: Английский

Dataset size considerations for robust acoustic and phonetic speech encoding models in EEG DOI Creative Commons
Maansi Desai, Alyssa M Field, Liberty S. Hamilton

et al.

Frontiers in Human Neuroscience, Journal Year: 2023, Volume and Issue: 16

Published: Jan. 20, 2023

In many experiments that investigate auditory and speech processing in the brain using electroencephalography (EEG), experimental paradigm is often lengthy tedious. Typically, experimenter errs on side of including more data, trials, therefore conducting a longer task to ensure data are robust effects measurable. Recent studies used naturalistic stimuli brain's response individual or combination multiple features system identification techniques, such as multivariate temporal receptive field (mTRF) analyses. The neural collected from must be divided into training set test fit validate mTRF weights. While good strategy clearly collect much feasible, it unclear how needed achieve stable results. Furthermore, whether specific stimulus for fitting choice feature representation affects would required generalizable Here, we previously EEG our lab sentence movie well an open-source dataset audiobook better understand needs measuring acoustic phonetic tuning. We found structure tested here stabilizes after collecting approximately 200 s TIMIT sentences, around 600 trailers 460 data. Thus, provide suggestions minimum amount necessary mTRFs listening Our findings motivated by highly practical concerns when working with children, patient populations, others who may not tolerate long study sessions. These will aid future researchers wish healthy clinical populations while minimizing participant fatigue retaining signal quality.

Language: Английский

Citations

7
Cortical Responses Time-Locked to Continuous Speech in the High-Gamma Band Depend on Selective Attention DOI Creative Commons
Vrishab Commuri, Joshua P. Kulasingham, Jonathan Z. Simon

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: July 24, 2023

Auditory cortical responses to speech obtained by magnetoencephalography (MEG) show robust tracking the speaker's fundamental frequency in high-gamma band (70-200 Hz), but little is currently known about whether such depend on focus of selective attention. In this study 22 human subjects listened concurrent, fixed-rate, from male and female speakers, were asked selectively attend one speaker at a time, while their neural recorded with MEG. The pitch range coincided lower band, whereas higher had much less overlap, only upper end band. Neural analyzed using temporal response function (TRF) framework. As expected, demonstrate male's speech, peak latency approximately 40 ms. Critically, magnitude depends attention: significantly greater when attended than it not attended, under acoustically identical conditions. This clear demonstration that even very early auditory are influenced top-down, cognitive, processing mechanisms.

Language: Английский

Citations

1