Evaluation of auditory stream segregation in individuals with cochlear pathology and auditory neuropathy spectrum disorder
Background and Aim: The central auditory nervous system has the ability to perceptually group similar sounds and segregates different sounds called auditory stream segregation or auditory streaming or auditory scene analysis. Identification of a change in spectral profile when the amplitude of a component of complex tone is changed is referred to as Spectral profile analysis. It serves as an important cue in auditory stream segregation as the spectra of the sound source vary. The aim of the study was to assess auditory stream segregation in individuals with cochlear pathology (CP) and auditory neuropathy spectrum disorder.
Methods: In the present study, three groups of participants were included. Experimental groups included 21 ears in each group with cochlear hearing loss or auditory neuropathy spectrum disorders (ANSD) and control group with 21 ears with normal hearing. Profile analysis was assessed using "mlp" toolbox, which implements a maximum likelihood procedure in MATLAB. It was assessed at four frequencies (250 Hz, 500 Hz, 750 Hz, and 1000 Hz) for all three groups.
Results: The results of the study indicate that the profile analysis threshold (at all four frequencies) was significantly poorer for individuals with CP or ANSD compared to the control group. Although, cochlear pathology group performed better than ANSD group.
Conclusion: This could be because of poor spectral and temporal processing due to loss of outer hair cells at the level of the basilar membrane in cochlear pathology patients and due to the demyelination of auditory neurons in individuals with ANSD.
2. Marrone N, Mason CR, Kidd G Jr. Evaluating the benefit of hearing aids in solving the cocktail party problem. Trends Amplif. 2008;12(4):300-15. doi: 10.1177/1084713808325880
3. Shinn-Cunningham BG, Best V. Selective Attention in Normal and Impaired Hearing. Trends Amplif. 2008;12(4):283-99. doi: 10.1177/1084713808325306
4. Brunstrom JM, Roberts B. Profiling the perceptual suppression of partials in periodic complex tones: Further evidence for a harmonic template. J Acoust Soc Am. 1998;104(6):3511-9. doi: 10.1121/1.423934
5. Freyman RL, Nelson DA. Frequency discrimination as a function of tonal duration and excitation-pattern slopes in normal and hearing-impaired listeners. J Acoust Soc Am. 1986;79(4):1034-44. doi: 10.1121/1.393375
6. Freyman RL, Nelson DA. Frequency discrimination of short- versus long-duration tones by normal and hearing-impaired listeners. J Speech Hear Res. 1987;30(1):28-36. doi: 10.1044/jshr.3001.28
7. Freyman RL, Nelson DA. Frequency discrimination as a function of signal frequency and level in normal-hearing and hearing-impaired listeners. J Speech Hear Res. 1991;34(6):1371-86. doi: 10.1044/jshr.3406.1371
8. Gengel RW. Temporal effects on frequency discrimination by hearing-impaired listeners J Acoust Soc Am. 1973;54(1):11-5. doi: 10.1121/1.1913550
9. Hall JW, Wood EJ. Stimulus duration and frequency discrimination for normal-hearing and hearing-impaired subjects. J Speech Hear Res. 1984;27(2):252-6. doi: 10.1044/jshr.2702.256
10. Moore BCJ, Glasberg BR. The relationship between frequency selectivity and frequency discrimination for subjects with unilateral and bilateral cochlear impairments. In: Moore BCJ, Patterson RD, editors. Auditory frequency selectivity. New York: Plenum; 1986b. p. 407-14.
11. Moore BC, Peters RW. Pitch discrimination and phase sensitivity in young and elderly subjects and its relationship to frequency selectivity. J Acoust Soc Am. 1992;91(5):2881-93. doi: 10.1121/1.402925
12. Simon HJ, Yund EW. Frequency discrimination in listeners with sensorineural hearing loss. Ear Hear. 1993;14(3):190-201. doi: 10.1097/00003446-199306000-00006
13. Tyler RS, Wood EJ, Fernandes M. Frequency resolution and discrimination of constant and dynamic tones in normal and hearing-impaired listeners. J Acoust Soc Am. 1983;74(4):1190-9. doi: 10.1121/1.390043
14. Fitzgibbons PJ, Wightman FL. Gap detection in normal and hearing-impaired listeners. J Acoust Soc Am. 1982;72(3):761-5. doi: 10.1121/1.388256
15. Glasberg BR, Moore BC, Bacon SP. Gap detection and masking in hearing-impaired and normal-hearing subjects. J Acoust Soc Am. 1987;81(5):1546-56. doi: 10.1121/1.394507
16. Tyler RS, Summerfield Q, Wood EJ, Fernandes MA. Psychoacoustic and phonetic temporal processing in normal and hearing-impaired listeners. J Acoust Soc Am. 1982;72(3):740-52. doi: 10.1121/1.388254
17. Zeng F-G, Kong Y-Y, Michalewski HJ, Starr A. Perceptual consequences of disrupted auditory nerve activity. J Neurophysiol. 2005;93(6):3050-63. doi: 10.1152/jn.00985.2004
18. Barman. Psycho-acoustical profile in normals and individuals with auditory dys-synchrony. [Thesis]. Mysore: University of Mysore; 2007.
19. Berlin CI, Hood LJ, Morlet T, Rose K, Brashears S. Auditory Neuropathy/Dys-Synchrony: Diagnosis and Management. Ment Retard Dev Disabil Res Rev. 2003;9(4):225-31. doi: 10.1002/mrdd.10084
20. Starr A, Sininger YS, Pratt H. The varieties of auditory neuropathy. J Basic Clin Physiol Pharmacol. 2000;11(3):215-30. doi: 10.1515/jbcpp.2000.11.3.215
21. Roush J, Silman S, Silverman CA, Robinette MS, Lynn S. Auditory diagnosis: principles and applications. Ear Hear. 1992; 13(5):380.
22. Soranzo A, Grassi M. Psychoacoustics: a comprehensive MATLAB toolbox for auditory testing. Front Psychol. 2014;5:712. doi: 10.3389/fpsyg.2014.00712
23. Moore BC. Perceptual consequences of cochlear hearing loss and their implications for the design of hearing aids. Ear Hear. 1996;17(2):133-61. doi: 10.1097/00003446-199604000-00007
24. Von Békésy G. Contribution to theory of hearing.mode of vibration of the basilar membrane. Phys Zeits. 1928;29:793.
|Issue||Vol 30 No 3 (2021)|
|Auditory stream segregation auditory scene analysis spectral profiling spectral profile analysis cochlear pathology auditory neuropathy spectrum disorders|
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