Brain evoked potential collection method

A technology of evoked potential and acquisition method, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve problems such as difficulty in signal acquisition, and achieve the effect of good large-capacity requirements and large-capacity requirements.

Inactive Publication Date: 2009-08-19
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

[0004] The present invention aims at the problem of difficulty in collecting signals on the existing brainstem evoked potentials, and proposes a method for collecting brain evoked potentials, which can effectively realize the collection and processing of weak EEG signals

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  • Brain evoked potential collection method
  • Brain evoked potential collection method

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Embodiment Construction

[0018] Such as figure 2 Schematic diagram of the acquisition method of the brain-evoked potential shown, and the subjects were tested in a quiet state. The earphone is connected to the human body, and the click sound wave output by the sound stimulation generator will stimulate the human brain through the ear, so that we can elicit the evoked potential BAEP from the scalp, amplify the evoked potential analog signal and convert it into a digital through A / D After the signal is collected, processed and analyzed, the collection, processing and analysis can be achieved by various instruments, such as recorders, camera devices, and microcomputers.

[0019] The following is a specific introduction: the principle block diagram of a single BAEP acquisition and recording is as follows: image 3 As shown, the single noise-containing BAEP signal 1 from the evoked potential meter passes through high-pass 2 (lower limit cut-off frequency 100Hz), 50Hz notch 3, low-pass 4 (upper limit cut-...

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Abstract

The invention relates to a method for acquiring brain evoked potentials, which comprises the following steps that: an earphone is connected with a human body so that an output click sound wave can generate stimulation to a human brain, an evoked potential BAEP can be led out from the scalp, and analogue signals of the evoked potential are amplified, are converted into digital signals by an A/D converter, and then are acquired, processed and analyzed. The method can effectively achieve the acquisition and the processing of feeble computer signals. The method can well satisfy the requirements on the real-time performance, the reliability and the large capacity for acquiring, processing and analyzing medical feeble human body signals by amplifying the acquired human body signals through an amplifier and combining the strong data processing functions of a PC.

Description

technical field [0001] The invention relates to a signal collection technology, in particular to a method for collecting brain evoked potentials. Background technique [0002] Evoked potentials (evoked potentials) are bioelectrical activities generated by the central nervous system during the process of feeling external or internal stimuli, representing changes in bioelectrical activity in a specific functional state of the central nervous system, following EEG and EMG The third major advance in clinical neurophysiology. As a key problem of weak signal detection, the signal acquisition of brain evoked potential has been widely concerned. [0003] Brainstem auditory evoked potential (auditory brainstem response—ABR) was first observed by Jewett et al. in 1970 from head recordings. It is an electrical response wave that appears within 10ms from the sound stimulus, and consists of 7 peaks. The letters in turn represent the typical I~VII waves such as figure 1 shown. In prac...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0484
Inventor 孙迎陈兆学安美君阚阅李越囡
Owner UNIV OF SHANGHAI FOR SCI & TECH
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