Green J B, Nelson A V, Michael D
Electroencephalogr Clin Neurophysiol. 1986 Apr;63(4):384-8. doi: 10.1016/0013-4694(86)90024-6.
Short-latency somatosensory potentials evoked by median nerve stimulation were averaged after analogue bandpass of 30-3000 Hz and then filtered by a zero-phase-shift digital filter with bandpass of 200-1500 Hz. Both near- and far-field potentials recorded by scalp to scalp, ear and extracephalic references were enhanced, without temporal distortion or the introduction of spurious peaks. Components were identified at the same or similar peak latencies as reported by other investigators. Zero-phase-shift digital filtering may increase the usefulness of recording short-latency somatosensory potentials.
在对正中神经刺激诱发的短潜伏期体感诱发电位进行30 - 3000 Hz模拟带通滤波后，再通过一个带通为200 - 1500 Hz的零相移数字滤波器进行滤波，然后对其进行平均处理。采用头皮对头皮、耳部及颅外参考电极记录的近场和远场电位均得到增强，且无时间失真或伪峰的引入。所识别的成分在峰潜伏期上与其他研究者报告的相同或相似。零相移数字滤波可能会提高记录短潜伏期体感诱发电位的实用性。
