Relation Between Sound Intensity and the Latency and Amplitude of the Brainstem Auditory Evoked Response

1978 ◽  
Vol 21 (2) ◽  
pp. 401-407 ◽  
Author(s):  
Janis A. Wolfe ◽  
Paul Skinner ◽  
John Burns
Keyword(s):  
Signal Intensity ◽  
Linear Growth ◽  
Sound Intensity ◽  
Normal Hearing ◽  
Evoked Response ◽  
Peak Latency ◽  
Peak Amplitude ◽  
Adult Males ◽  
Auditory Evoked Response ◽  
Brainstem Auditory Evoked Response

This study investigated the relation of peak amplitude and latency to signal intensity for the brainstem auditory evoked response (BSAER). One thousand clicks were presented to obtain each averaged response. Responses were obtained to clicks presented at sensation levels of 15, 20, 30, 40, 50, 60, and 70 dB. Five adult males who demonstrated normal hearing served as subjects. Latency and amplitude for various wavelets were plotted against signal intensity. A consistent trend of decreased peak latency occurred with increased signal intensity. Contrary to previous reports, the amplitude of Wavelet V showed a linear growth with increased signal intensity.

Study of brainstem auditory evoked response and biochemical markers in patients of alcohol use disorder

2021 ◽  
Vol 65 ◽  
pp. 193-200
Author(s):  
Mudassir Anis Siddiqui ◽  
Divya Srivastava ◽  
Sandeep Choudhary
Keyword(s):  
Alcohol Use ◽  
Biochemical Parameters ◽  
Alcoholic Hepatitis ◽  
Alcohol Use Disorder ◽  
Liver Enzymes ◽  
Evoked Response ◽  
Transmission Time ◽  
Control Group ◽  
Auditory Evoked Response ◽  
Brainstem Auditory Evoked Response

Objectives: Data available on brainstem auditory evoked response (BAER) and its correlation with biochemical parameters in patients of alcohol use disorder (AUD) in Indian population is scanty. Therefore, this study was undertaken to focus on the effects of AUD on BAER and liver enzymes. Materials and Methods: This case-control study included 40 males in the study group who had AUD and 40 healthy males in the control group in the age group of 20–60 years. The BAER was performed using octopus NCS/ EMG/EP (Clarity) machine. The levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase and serum bilirubin were estimated in all the subjects. Results: We observed a highly significant increase in the absolute latencies of waves III and V and interpeak latencies (IPL) I-III and I-V of BAER in the patients of AUD in this study. Significant increase in the liver enzymes and especially AST/ALT ratio of patients of AUD was seen which indicated towards subclinical alcoholic hepatitis. The latencies of waves of EPs (waves III, V, IPL I-III and IPL I-V) were positively correlated with the biochemical parameters and duration of AUD. Conclusion: Our findings indicated that AUD lead to the increase in brainstem transmission time and also lead to subclinical alcoholic hepatitis which is reflected by the increase in the liver enzymes. We concluded that chronic alcohol consumption affected the auditory pathways and delayed the auditory transmission time which was suggestive of possible demyelination of auditory tracts.

Brainstem auditory evoked response in presbyacusis

1991 ◽  
Vol 43 (1) ◽  
pp. 1-4
Author(s):  
Pawn Geol ◽  
Umesh wig ◽  
S. P. S. Yadav ◽  
Harish C. Geol ◽  
A. K. Sood
Keyword(s):  
Evoked Response ◽  
Auditory Evoked Response ◽  
Brainstem Auditory Evoked Response

Brainstem auditory evoked response—A normative study in children

1996 ◽  
Vol 48 (2) ◽  
pp. 144-149
Author(s):  
R. K. Kapoor ◽  
R. Kumar ◽  
R. Shukla ◽  
P. K. Misra ◽  
B. Sharma ◽  
...  
Keyword(s):  
Evoked Response ◽  
Normative Study ◽  
Auditory Evoked Response ◽  
Brainstem Auditory Evoked Response
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