ArticleThe Journal of the Acoustical Society of America2015
The effects of ipsilateral, contralateral, and bilateral broadband noise on the mid-level hump in intensity discrimination.
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 7 papers.
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Who cites it
7 citing papers in PubMed.
- Effect of Efferent Stimulation on the Differential Sensitivity in Individuals with Normal Hearing.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2022Article
- 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
- Effects of Masker Envelope Fluctuations on the Temporal Effect.Journal of the Association for Research in Otolaryngology : JARO · 2018Article
- Olivocochlear efferents: Their action, effects, measurement and uses, and the impact of the new conception of cochlear mechanical responses.Hearing research · 2018Review
- Amplitude modulation detection with a short-duration carrier: Effects of a precursor and hearing loss.The Journal of the Acoustical Society of America · 2018Article
- Notched-noise precursors improve detection of low-frequency amplitude modulation.The Journal of the Acoustical Society of America · 2017Article
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Authors and funding
2 authors.
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Abstract
Previous psychoacoustical and physiological studies indicate that the medial olivocochlear reflex (MOCR), a bilateral, sound-evoked reflex, may lead to improved sound intensity discrimination in background noise. The MOCR can decrease the range of basilar-membrane compression and can counteract effects of neural adaptation from background noise. However, the contribution of these processes to intensity discrimination is not well understood. This study examined the effect of ipsilateral, contralateral, and bilateral noise on the "mid-level hump." The mid-level hump refers to intensity discrimination Weber fractions (WFs) measured for short-duration, high-frequency tones which are poorer at mid levels than at lower or higher levels. The mid-level hump WFs may reflect a limitation due to basilar-membrane compression, and thus may be decreased by the MOCR. The noise was either short (50 ms) or long (150 ms), with the long noise intended to elicit the sluggish MOCR. For a tone in quiet, mid-level hump WFs improved with ipsilateral noise for most listeners, but not with contralateral noise. For a tone in ipsilateral noise, WFs improved with contralateral noise for most listeners, but only when both noises were long. These results are consistent with MOCR-induced WF improvements, possibly via decreases in effects of compression and neural adaptation.
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