Title :
Optimal Denoising of Brainstem Auditory Evoked Response (Baer) for Automatic Peak Identification and Brainstem Assessment
Author :
Jacquin, Arnaud ; Causevic, Elvir ; John, E. Roy ; Prichep, Leslie S.
Author_Institution :
Everest Biomed. Instrum., Chesterfield, MO
fDate :
Aug. 30 2006-Sept. 3 2006
Abstract :
Brainstem auditory evoked responses (BAER) are transient signals embedded in the EEG recorded from scalp electrodes, when a subject is presented with a series of acoustic clicks. These signals typically have a signal-to-noise ratio (SNR) well below -10 dB. The extraction of BAER signals from the EEG for the purpose of automatically computing features of interest from the BAER waveform(s) is described in this paper. These features are: 1) Presence of an actual BAER response (at least peak I), 2) Presence of peak V, 3) Inter-peak latency I-V. We propose to combine a signal-adaptive denoising technique based on complex wavelets with a signal quality metric referred to as the FSP variance ratio for quantitative evaluation of signal quality in order to optimally denoise BAER signals and perform reliable waveform analysis
Keywords :
adaptive signal processing; auditory evoked potentials; electroencephalography; medical signal detection; medical signal processing; signal denoising; EEG; SNR; automatic peak identification; brainstem assessment; brainstem auditory evoked response; optimal denoising; scalp electrodes; signal extraction; signal quality; signal-adaptive denoising technique; signal-to-noise ratio; transient signals; variance ratio; waveform analysis; Acoustic waves; Band pass filters; Biomedical measurements; Brain modeling; Delay; Ear; Electrodes; Electroencephalography; Frequency; Noise reduction;
Conference_Titel :
Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE
Conference_Location :
New York, NY
Print_ISBN :
1-4244-0032-5
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2006.259785