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Acoustic change complex findings in mild and moderate sensorineural hearing loss.
- Source :
- Egyptian Journal of Otolaryngology; 2/14/2024, Vol. 40 Issue 1, p1-11, 11p
- Publication Year :
- 2024
-
Abstract
- Background: Auditory electrophysiological tests of the cortex, which are processed in or close to the auditory cortex, are brain reactions to sound. A variation in a continuous stimulus causes the acoustic change complex potential (ACC), which is a wave following the P1-N1-P2 response. Objective: To measure the amplitude and latency of different components of ACC in normal subjects and across individuals with mild and moderate degrees of sensorineural hearing loss (SNHL). Patients and methods: The study includes 100 individuals with the age ranged from 10 to 50 years with different degrees of SNHL. The ACC was evoked by a change of second formant in the middle of ongoing steady-state synthetic, 3 formant vowels (ooee). The total duration was 500 ms. Changing occurred at 250 ms. Results: The SNHL subgroups showed statistically significantly longer P1 and N1 latencies. N1 and P2 amplitudes of ACC onset response were larger with a statistical significance as compared to controls. Post hoc analysis revealed no statistically significant difference between mild and moderate SNHL on ACC parameters. Age showed a significant negative correlation with ACC N1 and P2 latency, ACC P1 and N1 amplitude, and onset P2 latency. Onset response P1 latency was significantly higher in children than adults. Median ACC P1 amplitude significantly increased in children than adults. Conclusion: ACC is a reliable tool for testing the auditory cortex function of detecting difference in sounds presented that can be recorded readily in patients with mild and moderate SNHL. [ABSTRACT FROM AUTHOR]
- Subjects :
- AUDITORY evoked response
VOWELS
KRUSKAL-Wallis Test
STATISTICS
PHYSIOLOGICAL aspects of speech
ELECTROENCEPHALOGRAPHY
AGE distribution
SPEECH audiometry
ONE-way analysis of variance
SENSORINEURAL hearing loss
CASE-control method
MANN Whitney U Test
SEVERITY of illness index
T-test (Statistics)
PEARSON correlation (Statistics)
AUDIOMETRIC equipment
PHONETICS
CHI-squared test
AUDIOMETRY
DATA analysis software
DATA analysis
AUDITORY cortex
Subjects
Details
- Language :
- English
- ISSN :
- 10125574
- Volume :
- 40
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Egyptian Journal of Otolaryngology
- Publication Type :
- Academic Journal
- Accession number :
- 175752668
- Full Text :
- https://doi.org/10.1186/s43163-024-00582-9