Surgery – Truss – Pad
Patent
1980-02-08
1981-01-13
Kamm, William E.
Surgery
Truss
Pad
128901, A61B 504
Patent
active
042443768
ABSTRACT:
Steady-state evoked potentials from the nervous system, measured on the scalp and elsewhere on the body in response to specific periodic sensory stimuli, contain the fundamental frequency of the stimulus and other waves, and are of the order of 40 dB below potentials due to general electrical activity of the nervous system which may be considered as noise. Medical information revealed by evoked potentials is extremely valuable but is limited by measuring methods of the prior art and by the background noise. In this disclosure the periodic steady-state evoked potential from a periodic stimulus, shifted to a suitable frequency band, is sampled at instants of zero-crossings of the shifted evoked potential, at the Nyquist frequency or greater for the noise frequency band, and the resultant samples of noise are reconstructed in a filter and subtracted from the entire evoked potential, to produce as a resultant the evoked potential substantially free from background noise.
REFERENCES:
patent: 3498288 (1970-03-01), Max et al.
patent: 3848586 (1974-11-01), Suzuki et al.
Plumb et al., "IEEE Transactions on Biomedical Engineering," vol. 11, No. 4, Oct. 1967, pp. 157-159.
Johns et al., "Electroencephalography Clinical Neurophysiology," vol. 37, No. 4, pp. 414-416, Oct. 1974.
Fisher Charles B.
Fisher Sidney T.
LandOfFree
Measurement of evoked nervous system potentials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Measurement of evoked nervous system potentials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of evoked nervous system potentials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2226913