Complex tone processing and critical band in the human auditory cortex

Soeta, Yoshiharu; Nakagawa, Seiji

doi:10.1016/j.heares.2006.09.005

Cited by 13 publications

(14 citation statements)

References 32 publications

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“…In previous studies using tonal stimuli, the right hemisphere was found to exhibit greater N1(m) amplitudes than the left (e.g., Kanno et al, 1996;Fujioka et al, 2003;Seither-Preisler et al, 2003;Soeta and Nakagawa, 2006;Hine and Debener, 2007). These results are not consistent with the present findings regarding the N1m 0 and previous findings regarding the N1 0 .…”

Section: Hemispheric Differencecontrasting

confidence: 99%

Auditory evoked responses in human auditory cortex to the variation of sound intensity in an ongoing tone

Soeta

Nakagawa

2012

Hearing Research

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Section: Hemispheric Differencecontrasting

confidence: 99%

Auditory evoked responses in human auditory cortex to the variation of sound intensity in an ongoing tone

Soeta

Nakagawa

2012

Hearing Research

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“…Using MEG and band pass noise at different center frequencies, Soeta et al [2005] reported that the peak amplitude of N1m decreased with increasing bandwidth of the band pass noise. In a second study the same authors, using twotone complexes, described an increase of N1m amplitudes with increasing frequency separation or total bandwidth, when these were greater than the critical bandwidth [Soeta and Nakagawa, 2006]. This was interpreted as an MEG correlate of critical band-like behavior.…”

Section: Introductionmentioning

confidence: 91%

Spectral loudness summation takes place in the primary auditory cortex

Röhl

Kollmeier

Uppenkamp

2010

Human Brain Mapping

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Auditory functional magnetic resonance imaging (fMRI) was used to assess neural activation in the human auditory brainstem (AB) and cortex (AC) as a function of bandwidth (BW). We recorded brain activation of 22 normal hearing listeners induced by band pass filtered pink noise stimuli with equal sound pressure level of 70 dB SPL. Tested bandwidths were 50, 500, 1,500, 3,000, 6,000, and 8,000 Hz. The center frequency was 4,000 Hz. Categorical loudness scaling had been performed in a silent booth with all of these stimuli. Loudness as a function of bandwidth followed a concave-shaped curve which reflected the influence of spectral loudness summation (SLS) for higher BW and the influence of large amplitude fluctuations for very low BW, which itself could be explained by peak-listening. While neural activation of the AB, as measured by the percent signal change from baseline (PSC), was tuned to the physical BW of the stimuli in a straight linear fashion, the trend of perceived loudness as a function of BW was reflected in several aspects by corresponding neural activation in the primary auditory cortex (PAC). Finally, from the absolute differences of the PSC between PAC and AB, gains in perceived loudness associated with SLS and the effect of large amplitude fluctuations could be predicted with an accuracy of 1-2 dB for the whole group of participants.

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“…Burrows and Barry [5] reported that the amplitude of Na of the AEP rapidly increased when the frequency separation of a two-tone complex increased beyond the CBW. Soeta et al [6,7] found that the N1m amplitudes of AEFs increased with increasing bandwidth when the bandwidth of bandpass noise or the frequency separation of a two-tone complex increased beyond the CBW. These studies have focused on physiological correlates of the monaural auditory filter in the human auditory cortex; however, relatively little is known about the physiological correlates of the binaural auditory filter in the human auditory cortex.…”

Section: Introductionmentioning

confidence: 99%

Effects of the binaural auditory filter in the human brain

Soeta

Nakagawa

2007

NeuroReport

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The effects of the binaural auditory filter in the human auditory cortex were examined by auditory-evoked magnetic fields. Two tones with different frequency separations, which were presented dichotically to the left and right ears, were used as the sound stimuli, with all signals presented at sound pressure level of 60 dB. The results indicated that the N1m amplitudes were approximately constant when the frequency separation was less than 100 Hz; however, the N1m amplitudes increased with increasing frequency separation when the frequency separation was greater than 200 Hz. These findings indicate that binaural auditory filter-like behavior might be reflected in N1m amplitudes.

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Complex tone processing and critical band in the human auditory cortex

Cited by 13 publications

References 32 publications

Auditory evoked responses in human auditory cortex to the variation of sound intensity in an ongoing tone

Auditory evoked responses in human auditory cortex to the variation of sound intensity in an ongoing tone

Spectral loudness summation takes place in the primary auditory cortex

Effects of the binaural auditory filter in the human brain

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