Brain evoked potential signal acquiring method

Abstract

The invention discloses a brain evoked potential signal acquiring method. The brain evoked potential signal acquiring method comprises the following steps: S1, stimulating a brain by a frequency, acquiring waveforms of brain evoked potential signals stimulated every time, and simultaneously acquiring waveforms of randomly generated brain spontaneous potential signals, wherein brain spontaneous potential signals acquired at different times are different; S2, judging whether the wave amplitude of the waveform of an optional brain evoked potential signal in the waveforms of the brain evoked potential signals acquired in the time period is greater than a first set threshold value or not, if the wave amplitude of the waveform of the optional brain evoked potential signal in the waveforms of the brain evoked potential signals acquired in the time period is greater than the first set threshold value, entering the step S3, and if the wave amplitude of the waveform of the optional brain evoked potential signal in the waveforms of the brain evoked potential signals acquired in the time period is not greater than the first set threshold value, entering the step S4; S3, removing waveforms of brain evoked potential signals; S4, successively superposing the brain spontaneous potential signals and the brain evoked potential signals in the time period; and S5, displaying an oscillogram of the brain evoked potential signals. When the waveforms of the brain evoked potential signals are acquired, acquired interference noises, namely the waveforms of the brain evoked potential signals, can be filtered out effectively.

Description

technical field [0001] The invention relates to a method for collecting brain-evoked potential signals, in particular to a method for collecting brain-evoked potential signals by using superposition technology. Background technique [0002] Brain evoked potential is the biological electrical activity generated by the central nervous system during the process of feeling external or internal stimuli. The evoked potential of the brain is relative to the spontaneous potential of the brain. What the electroencephalogram shows is the dot activity produced by the cerebral cortex when there is no external stimulus, and its characteristics are rhythmic and continuous. The brain evoked potential is the biological electrical activity generated by the central nervous system under the condition of receiving specific stimuli. In clinical applications, the corresponding brain evoked potentials are often collected by stimulating the auditory system, visual system and somatosensory system....

AI Technical Summary

Problems solved by technology

[0003] The amplitude of the brain-evoked potential signal is very small, usually around 0.1uV-10uV, which is much smaller than the brain's spontaneous potential signal, so when collecting the above-mentioned brain-evoked potential signal, the brain-evoked potential signal is generally Brain spontaneous potential signals are covered, resulting in the inability to clearly collect brain evoked potential signals

Images