ArticleThe Journal of the Acoustical Society of America2015
Exploring the source of the mid-level hump for intensity discrimination in quiet and the effects of noise.
Article in The Journal of the Acoustical Society of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- A computational model of the mammalian auditory periphery with a closed-loop medial olivocochlear reflex simulating across-channel efferent gain control.The Journal of the Acoustical Society of America · 2026Article
- The role of the medial olivocochlear reflex in psychophysical masking and intensity resolution in humans: a review.Journal of neurophysiology · 2021Review
- Exploring the Role of Medial Olivocochlear Efferents on the Detection of Amplitude Modulation for Tones Presented in Noise.Journal of the Association for Research in Otolaryngology : JARO · 2019Article
- Influence of suppression on restoration of spectral loudness summation in listeners with hearing loss.The Journal of the Acoustical Society of America · 2018Article
- Amplitude modulation detection with a short-duration carrier: Effects of a precursor and hearing loss.The Journal of the Acoustical Society of America · 2018Article
- Object-based attention modulates the discrimination of level increments in stop-consonant noise bursts.PloS one · 2018Article
- Notched-noise precursors improve detection of low-frequency amplitude modulation.The Journal of the Acoustical Society of America · 2017Article
- The effects of ipsilateral, contralateral, and bilateral broadband noise on the mid-level hump in intensity discrimination.The Journal of the Acoustical Society of America · 2015Article
- PsyAcoustX: A flexible MATLAB(®) package for psychoacoustics research.Frontiers in psychology · 2015Article
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2 authors.
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Abstract
Intensity discrimination Weber fractions (WFs) measured for short, high-frequency tones in quiet are larger at mid levels than at lower or higher levels. The source of this "mid-level hump" is a matter of debate. One theory is that the mid-level hump reflects basilar-membrane compression, and that WFs decrease at higher levels due to spread-of-excitation cues. To test this theory, Experiment 1 measured the mid-level hump and growth-of-masking functions to estimate the basilar membrane input/output (I/O) function in the same listeners. Results showed the initial rise in WFs could be accounted for by the change in I/O function slope, but there was additional unexplained variability in WFs. Previously, Plack [(1998). J. Acoust. Soc. Am. 103(5), 2530-2538] showed that long-duration notched noise (NN) presented with the tone reduced the mid-level hump even with a temporal gap in the NN. Plack concluded the results were consistent with central profile analysis. However, simultaneous, forward, and backward NN were not examined separately, which may independently test peripheral and central mechanisms of the NN. Experiment 2 measured WFs at the mid-level hump in the presence of NN and narrowband noise of different durations and temporal positions relative to the tone. Results varied across subjects, but were consistent with more peripheral mechanisms.
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