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Maintaining intelligibility at high speech intensities: evidence of lateral inhibition in the lower auditory pathway.
- Source :
-
The Journal of the Acoustical Society of America [J Acoust Soc Am] 2013 Jul; Vol. 134 (1), pp. EL119-25. - Publication Year :
- 2013
-
Abstract
- Three experiments examined the intelligibility enhancement produced when noise bands flank high intensity narrowband speech. Enhancement was unaffected by noise gating (experiment 1), ruling out peripheral adaptation as a source, and was also unaffected by interaural decorrelation of noise bands flanking diotic speech (experiment 2), indicating that enhancement occurs prior to binaural processing. These results support previous suggestions that intelligibility loss at high intensities is reduced by lateral inhibition in the cochlear nuclei. Results from a final experiment suggest that this effect is only ipsilateral, implicating a specific population of inhibitory neurons.
- Subjects :
- Adolescent
Adult
Cochlear Nucleus physiology
Dominance, Cerebral physiology
Female
Humans
Male
Neurons physiology
Pitch Discrimination physiology
Sound Spectrography
Young Adult
Auditory Pathways physiology
Loudness Perception physiology
Neural Inhibition physiology
Perceptual Masking physiology
Speech Acoustics
Speech Perception physiology
Subjects
Details
- Language :
- English
- ISSN :
- 1520-8524
- Volume :
- 134
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- The Journal of the Acoustical Society of America
- Publication Type :
- Academic Journal
- Accession number :
- 23862899
- Full Text :
- https://doi.org/10.1121/1.4807861