Abstract
Auditory brain stem evoked responses are routinely used in audiology and otoneurology. Because recordings include more or less noise, the signals of evoked responses need digital filtering to suppress the noise. Nonrecursive digital filters are often the best since they can be organized to have no phase shift, which is essential in order not to distort sensitive parameters, as latency, in evoked responses. We have studied effects of some nonrecursive digital filters on the latency parameters of evoked responses. It turned out that digital filtering can have considerable influence on latencies, and thus the choice of appropriate filters is crucial.
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References
Boston JR, Ainslie PJ (1980) Effects of analog and digital filtering on brain stem auditory evoked potentials. Electoencephalogr Clin Neurophysiol 48:361–364
Domico WD, Kavanagh KT (1986) Analog and zero phase-shift digital filtering of the auditory brain stem response waveform. Ear Hear 7:377–382
Doyle DJ, Hyde ML (1981a) Analogue and digital filtering of auditory brainstem responses. Scand Audiol 10:81–89
Doyle DJ, Hyde ML (1981b) Bessel filtering of brain stem auditory evoked potentials. Electroencephalogr Clin Neurophysiol 51:446–448
Fridman J, John ER, Bergeison M, Kaiser JB, Baird HW (1982) Application of digital filtering and automatic peak detection to brain stem auditory evoked potentials. Electroencephalogr Clin Neurophysiol 53:405–416
Grönfors T (1991) Syntactic patterns recognition of evoked potentials, (in preparation)
Jewett DL (1970) Volume-conducted potentials in response to auditory stimuli as detected by averaging in the cat. Electroencephalogr Clin Neurophysiol 28:609–618
Jewett DL, Wiullistone JS (1971) Auditory-evoked far fields averaged from the scalp of humans. Brain 94:681–696
Kavanagh KT, Franks R (1989) Analog and digital filtering of the brain stem auditory evoked response. Ann Otol Rhinol Laryngol 98:508–514
Madhavan GP, de Bruin H, Upton ARM, Jernigan ME (1986) Clissification of brain-stem auditory evoked potentials by syntactic methods. Electroencephalogr Clin Neurophysiol 65:289–296
Møller AR (1980) A digital filter for brain stem evoked responses. Am J Otolaryngol 1:372–377
Møller AR (1983) Improving brain stem auditory evoked potential recordings by digital filtering. Ear Hear 4:108–113
Møller AR (1988) Use of zero-phase digital filters to enhance brainstem auditory evoked potentials (BAEPs). Electroencephalogr Clin Neurophysiol 71:226–232
Marsh RR (1988) Digital filtering of auditory evoked potentials. Ear Hear 9:101–107
Pratt H, Urbach D, Bleich N (1989) Auditory brainstem evoked potentials peak identification by finite response digital filters. Audiology 28:272–283
Urbach D, Pratt H (1986) Application of finite impulse response digital filters to auditory brain-stem evoked potentials. Electroencephalogr Clin Neurophysiol 64:269–273
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Grönfors, T., Juhola, M. & Johansson, R. Evaluation of some nonrecursive digital filters for signals of auditory evoked responses. Biol. Cybern. 66, 533–536 (1992). https://doi.org/10.1007/BF00204118
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DOI: https://doi.org/10.1007/BF00204118