Auditory steady-state responses as neural correlates of loudness growth

Eeckhoutte, Maaike Van; Wouters, Jan; Francart, Tom

doi:10.1016/j.heares.2016.09.009

Cited by 31 publications

(32 citation statements)

References 58 publications

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“…When stimulus intensity increased from 30 to 60 dB A, the amplitude of peak 1 (30-50 ms) increased. This is in line with the observed increase of auditory evoked potential amplitudes in function of stimulus intensity for non-speech stimuli (Moore and Rose, 1969;Picton et al, 1970;Adler and Adler, 1989;Billings et al, 2007;Hall, 2007;Picton et al, 2003;Van Eeckhoutte et al, 2016). However, when further increasing the stimulus intensity to 70 dB A, the amplitude of peak 1 decreased.…”

Section: Stimulus Intensity Affects Temporal Response Functionssupporting

confidence: 89%

“…We hypothesize that the TRF peak is delayed with lower stimulus intensities because, although behaviorally measured speech intelligibility remains the same, the lower stimulus intensity makes it harder to understand the speech, resulting in a longer time needed to process the speech. This is similar to auditory evoked response potential literature using non-speech stimuli where decreasing stimulus intensities result in increasing latencies (Hall, 2007;Picton et al, 2003;Van Eeckhoutte et al, 2016).…”

Section: Stimulus Intensity Affects Temporal Response Functionssupporting

confidence: 87%

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The effect of stimulus intensity on neural envelope tracking

Verschueren

Vanthornhout

Francart

2020

Preprint

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Objectives: The last years there has been significant interest in attempting to recover the temporal envelope of a speech signal from the neural response to investigate neural speech processing. The research focus is now broadening from neural speech processing in normal-hearing listeners towards hearing-impaired listeners. When testing hearing-impaired listeners speech has to be amplified to resemble the effect of a hearing aid and compensate peripheral hearing loss. Until today, it is not known with certainty how or if neural speech tracking is influenced by sound amplification. As these higher intensities could influence the outcome, we investigated the influence of stimulus intensity on neural speech tracking. Design: We recorded the electroencephalogram (EEG) of 20 normal-hearing participants while they listened to a narrated story. The story was presented at intensities from 10 to 80~dB~A. To investigate the brain responses, we analyzed neural tracking of the speech envelope by reconstructing the envelope from EEG using a linear decoder and by correlating the reconstructed with the actual envelope. We investigated the delta (0.5-4 Hz) and the theta (4-8 Hz) band for each intensity. We also investigated the latencies and amplitudes of the responses in more detail using temporal response functions which are the estimated linear response functions between the stimulus envelope and the EEG. Results: Neural envelope tracking is dependent on stimulus intensity in both the TRF and envelope reconstruction analysis. However, provided that the decoder is applied on data of the same stimulus intensity as it was trained on, envelope reconstruction is robust to stimulus intensity. In addition, neural envelope tracking in the delta (but not theta) band seems to relate to speech intelligibility. Similar to the linear decoder analysis, TRF amplitudes and latencies are dependent on stimulus intensity: The amplitude of peak 1 (30-50 ms) increases and the latency of peak 2 (140-160 ms) decreases with increasing stimulus intensity. Conclusion: Although brain responses are influenced by stimulus intensity, neural envelope tracking is robust to stimulus intensity when using the same intensity to test and train the decoder. Therefore we can assume that intensity is not a confound when testing hearing-impaired participants with amplified speech using the linear decoder approach. In addition, neural envelope tracking in the delta band appears to be correlated with speech intelligibility, showing the potential of neural envelope tracking as an objective measure of speech intelligibility.

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Section: Stimulus Intensity Affects Temporal Response Functionssupporting

confidence: 89%

Section: Stimulus Intensity Affects Temporal Response Functionssupporting

confidence: 87%

The effect of stimulus intensity on neural envelope tracking

Verschueren

Vanthornhout

Francart

2020

Preprint

Self Cite

View full text Add to dashboard Cite

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“…One approach would be to randomly vary stimulus level around estimated comfort levels. It may also be possible to use objective measurements to perform loudness balancing (Van Eeckhoutte et al, 2016) and this warrants further investigation.…”

Section: Discussionmentioning

confidence: 99%

Objective assessment of electrode discrimination with the auditory change complex in adult cochlear implant users

Mathew¹,

Undurraga

Li³

et al. 2017

Hearing Research

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The spatial auditory change complex (ACC) is a cortical response elicited by a change in place of stimulation. There is growing evidence that it provides a useful objective measure of electrode discrimination in cochlear implant (CI) users. To date, the spatial ACC has only been measured in relatively experienced CI users with one type of device. Early assessment of electrode discrimination could allow auditory stimulation to be optimized during a potentially sensitive period of auditory rehabilitation. In this study we used a direct stimulation paradigm to measure the spatial ACC in both pre- and post-lingually deafened adults. We show that it is feasible to measure the spatial ACC in different CI devices and as early as 1 week after CI switch-on. The spatial ACC has a strong relationship with performance on a behavioural discrimination task and in some cases provides information over and above behavioural testing. We suggest that it may be useful to measure the spatial ACC to guide auditory rehabilitation and improve hearing performance in CI users.

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“…Red lines indicate a significant positive PLV between two electrodes while blue lines indicate a negative one. Van Eeckhoutte et al, 2016), which might explain the difference in ASSR power in the frequency domain. Furthermore, we both rms normalized and carefully calibrated our stimuli, precluding loudness as an explanatory factor for the difference in ASSR power.…”

Section: Monaural Beats Elicit Higher Cortical Entrainment At the Beamentioning

confidence: 99%

Binaural Beats through the Auditory Pathway: From Brainstem to Connectivity Patterns

Perez

Dumas

Lehmann

2020

eNeuro

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Visual AbstractBinaural beating is a perceptual auditory illusion occurring when presenting two neighboring frequencies to each ear separately. Several controversial claims have been attributed to binaural beats regarding their ability to entrain human brain activity and mood, in both the scientific literature and the marketing realm. Here, we sought to address those questions in a robust fashion using a single-blind, active-controlled March/April 2020, 7(2) ENEURO.0232-19.2020 1-18Research Article: New Research protocol. To do so, we compared the effects of binaural beats with a control beat stimulation (monaural beats, known to entrain brain activity but not mood) across four distinct levels in the human auditory pathway: subcortical and cortical entrainment, scalp-level functional connectivity and self-reports. Both stimuli elicited standard subcortical responses at the pure tone frequencies of the stimulus [i.e., frequency following response (FFR)], and entrained the cortex at the beat frequency [i.e., auditory steady state response (ASSR)]. Furthermore, functional connectivity patterns were modulated differentially by both kinds of stimuli, with binaural beats being the only one eliciting cross-frequency activity. Despite this, we did not find any mood modulation related to our experimental manipulation. Our results provide evidence that binaural beats elicit cross frequency connectivity patterns, but weakly entrain the cortex when compared with monaural beat stimuli. Whether binaural beats have an impact on cognitive performance or other mood measurements remains to be seen and can be further investigated within the proposed methodological framework.

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Auditory steady-state responses as neural correlates of loudness growth

Cited by 31 publications

References 58 publications

The effect of stimulus intensity on neural envelope tracking

The effect of stimulus intensity on neural envelope tracking

Objective assessment of electrode discrimination with the auditory change complex in adult cochlear implant users

Binaural Beats through the Auditory Pathway: From Brainstem to Connectivity Patterns

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