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Measurement of human BAERs by the maximum length sequence technique
1Department of Electrical & Electronic Engineering, University of Hong Kong.
Medical & Biological Engineering & Computing
|January 1, 1992
Summary
This study introduces a faster brainstem auditory evoked response (BAER) measurement technique using maximum length sequences. The new method improves signal-to-noise ratio (SNR) and speeds up BAER testing for clinical applications.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Auditory Neuroscience
Background:
- Traditional brainstem auditory evoked response (BAER) measurement using ensemble averaging is time-consuming.
- Existing BAER techniques are often unsuitable for time-critical clinical applications.
Purpose of the Study:
- To evaluate the efficacy of using maximum length sequences (MLS) for human BAER measurements.
- To compare the MLS technique with conventional ensemble averaging for BAER assessment.
Main Methods:
- Application of pseudorandom binary sequences (maximum length sequences) for auditory stimulation.
- Deconvolution algorithms to process the response and enhance signal-to-noise ratio (SNR).
- Experimental setup and theoretical analysis of SNR improvement compared to averaging.
Main Results:
- The MLS technique allows for a faster click rate, reducing overall measurement time.
- Deconvolution with MLS yields a higher signal-to-noise ratio (SNR) response.
- Measurements in humans and cats demonstrated the effectiveness of the MLS technique.
Conclusions:
- Maximum length sequence (MLS) application offers a faster and more efficient method for BAER measurements.
- This technique is particularly beneficial for time-constrained clinical settings.
- The MLS method provides improved SNR or reduced measurement time compared to traditional averaging.