CN103654773A - Brain electrical physiological experiment teaching device - Google Patents
Brain electrical physiological experiment teaching device Download PDFInfo
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- CN103654773A CN103654773A CN201310713705.3A CN201310713705A CN103654773A CN 103654773 A CN103654773 A CN 103654773A CN 201310713705 A CN201310713705 A CN 201310713705A CN 103654773 A CN103654773 A CN 103654773A
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Abstract
The invention provides a brain electrical physiological experiment teaching device which comprises a stimulation generating system, a head positioning system, a brain electrical amplifier, a data collection unit, a data processing unit and a data comparison unit, wherein the stimulation generating system, the head positioning system, the brain electrical amplifier, the data collection unit, the data processing unit and the data comparison unit are in communication connection in sequence. The brain electrical physiological experiment teaching device measures the voltage ranging from -100 microvolt to 100 microvolt, brain electrical signals are amplified reasonably, and cranial nerve motions caused by corresponding events are measured. According to the teaching device, superposition is conducted on a plurality of sections of brain electricity caused by the same stimulation many times, offsetting is conducted due to random variation of the spontaneous brain electricity or noise, useful brain electrical signals are extracted, the brain electricity signals are recorded and converted into corresponding brain electricity data, brain electricity waveforms are drawn, the brain electricity waveforms of a normal person are compared with those of a patient, and the diagnostic basis is formed to assist in completing diagnosis.
Description
Technical field
The present invention relates to a kind of teaching appliance, relate in particular to a kind of Electroencephalo experimental teaching unit.
Background technology
How about from 1875, Britain's surgeon card brain that animal is exposed that pauses carried out the direct recording start of electric current, and constantly having scientist to study can noinvasive, the painless EEG signals that records.Until after the seventies, even if use integrated circuit and common mode inhibition to amplify EEG signals, record EEG signals with magnetic tape recorder, not only capacity of resisting disturbance is strong to make EEG signals, and record amount reduces simultaneously.Nowadays, brain electric system has become a kind of routine clinical monitoring instrument, and You great front three hospital moves towards small-middle hospital, and market prospect is wide.The 1-2 that can only record at the beginning of being born from Brain Diagnostic Apparatus leads, and to nowadays 37 leading, 64 lead, even 128 lead; From simulation electroencephalogram, to present full tunnel digitized computer collection, show, store, analyze.Brain electricity equipment has had huge instrument and equipment to develop into portable portable system.The eighties in 20th century so far, because the technology of brain electricity is mainly monopolized by foreign vendor, the equipment of domestic independent research is compared with overseas equipment and is also had obvious gap at aspects such as performance, capacity of resisting disturbance, stability.
Summary of the invention
The deficiency existing for prior art, the object of the present invention is to provide a kind of superior performance, capacity of resisting disturbance by force and the Electroencephalo experimental teaching unit of good stability.
For achieving the above object, the invention provides a kind of Electroencephalo experimental teaching unit, comprise stimulation generation system, head location system, eeg amplifier, data acquisition unit, data processing unit and the Data Comparison unit of communication connection successively.
Preferably, described stimulation generation system is in order to produce the host work station of stimulus signal, the input sensory channel that presents order, stimulates that arranges multiple stimulus signal according to patient's the course of disease, compromised brain function degree and impaired brain district, described host work station is connected with described head location system communication by interface.
Preferably, described head location system comprises an electrode cap, electrode cap is connected by interface communication with described host work station, is provided with 10-20 electrode arranging system in described electrode cap, and described 10-20 electrode arranging system is connected with the collection port of described eeg amplifier.
Preferably, described eeg amplifier comprises the direct current amplifying unit in order to signal is amplified and analogue signal is converted to the AD converting unit of digital signal, the signal input part of described direct current amplifying unit and the communication connection of described 10-20 electrode arranging system, described direct current amplifying unit and the communication connection of described AD converting unit, the signal output part of described AD converting unit is connected with the input of described data acquisition unit.
Preferably, described eeg amplifier is the eeg amplifier with single-stage amplifying circuit and bipolar amplifying circuit.
Electroencephalo experimental teaching unit provided by the invention, according to the neuroelectricity transfer law of cerebral activity, is measured the voltage between ± 100 μ V, rationally amplifies EEG signals, measures the brain neurological motion that dependent event causes.This teaching system repeatedly superposes the multistage brain electricity being caused by identical stimulation, counteracting is because spontaneous brain electricity or noise are change at random, extract useful brain electricity number, complete the record of EEG signals, convert corresponding eeg data to, draw brain wave patterns, the head waveform of contrast normal person and sufferer, form diagnosis basis, assisted diagnosis.
Accompanying drawing explanation
Fig. 1 is the flow chart of Electroencephalo experimental teaching unit of the present invention;
Fig. 2 is the distribution of electrodes schematic diagram of the head location system of Electroencephalo experimental teaching unit of the present invention;
Fig. 3 is the circuit diagram of single-stage amplifying circuit of the eeg amplifier of Electroencephalo experimental teaching unit of the present invention;
Fig. 4 is the circuit diagram of bipolar amplifying circuit of the eeg amplifier of Electroencephalo experimental teaching unit of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described further:
Please refer to Fig. 1, Fig. 1 is the flow chart of Electroencephalo experimental teaching unit of the present invention.
An Electroencephalo experimental teaching unit, comprises the stimulation generation system, head location system, eeg amplifier, data acquisition unit, data processing unit and the Data Comparison unit that communicate to connect successively.By signal stimulus is carried out in human body brain acupuncture point, electrode by head location system gathers the EEG signals producing after brain is upset and is transferred to eeg amplifier, eeg amplifier carries out the signal collecting to amplify after AD conversion, digital signal after amplification carries out contrasting with the normal person's who stores in advance brain wave patterns figure after data acquisition and processing (DAP) via the computer of curing data capture program and data processor again, by can more intuitively effectively showing patient's sufferer reason after relative analysis.
Described stimulation generation system is in order to produce the host work station of stimulus signal, the input sensory channel that presents order, stimulates that arranges multiple stimulus signal according to patient's the course of disease, compromised brain function degree and impaired brain district, described host work station is connected with described head location system communication by interface.
Please refer to Fig. 2, Fig. 2 is the distribution of electrodes schematic diagram of the head location system of Electroencephalo experimental teaching unit of the present invention.
Described head location system comprises an electrode cap, and electrode cap is connected by interface communication with described host work station, is provided with 10-20 electrode arranging system in described electrode cap, and described 10-20 electrode arranging system is connected with the collection port of described eeg amplifier.
Described eeg amplifier comprises the direct current amplifying unit in order to signal is amplified and analogue signal is converted to the AD converting unit of digital signal, the signal input part of described direct current amplifying unit and the communication connection of described 10-20 electrode arranging system, described direct current amplifying unit and the communication connection of described AD converting unit, the signal output part of described AD converting unit is connected with the input of described data acquisition unit.
Described eeg amplifier is the eeg amplifier with single-stage amplifying circuit and bipolar amplifying circuit.As shown in Figure 3 and Figure 4, eeg amplifier adopts one pole to amplify and bipolar amplifying technique, is exactly that high impedance input homophase amplifies and differential bipolar amplification, realizes EEG signals and electro-ocular signal synchronization bandwidth and amplifies, eye electric conductance connection is realized to montage computing, and the bipolar denoising of brain electricity; Adopt direct current amplifying technique, brain electricity, electro-ocular signal are realized to the collection of ultra broadband, and to the collection of running simultaneously of all passages, convert digital signal to, through high-speed light Rhizoma Nelumbinis, isolate, with triggering signal combination, physiology Signal coding, is transferred to computer through USB2.0 and carries out data analysis work for the treatment of.Use modern signal processing, IIR filtering in real time and afterwards without phase shift filter, extracts ERP information.
As shown in Figure 1, Data Comparison unit arranges target signal (oscillogram) in advance, target signal (oscillogram) and non-target signal (EEG signals) are realized to real-time EEG segmentation, stack accumulation, denoising, filtering, show current ERP information, tested and got final product knowledge of result, realized early prediction, early analyze, early know function.
Eeg amplifier gathers tested original eeg data by the interface being connected with head location system, and convert these original analog to digital signal, synchronize with the stimulation mark triggers signal receiving through 25 pin parallel ports after amplifying and export to USB interface, by USB interface, be transferred to the computer that is solidified with data acquisition unit and data processing unit and record and analyze.
This Electroencephalo experimental teaching unit, according to the neuroelectricity transfer law of cerebral activity, is measured the voltage between ± 100 μ V, rationally amplifies EEG signals, measures the brain neurological motion that dependent event causes.This teaching system repeatedly superposes the multistage brain electricity being caused by identical stimulation, counteracting is because spontaneous brain electricity or noise are change at random, extract useful brain electricity number, complete the record of EEG signals, convert corresponding eeg data to, draw brain wave patterns, the head waveform of contrast normal person and sufferer, form diagnosis basis, assisted diagnosis.
This Electroencephalo experimental teaching unit can not only complete online real-time data collection and analysis and draw diagnosis basis, when the practical application of medical care occasion, EEG signals can also be stored to the data analysis that carries out off-line, avoid because number causes waits for too long too much, the collection of only carrying out data is quite rapidly with efficiently, until carry out after the analyzing and processing of data afterwards, then show that diagnosis basis informs sufferer or sufferer family members.
Above-described embodiment is only for the invention example is clearly described, and the not restriction to the invention specific embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.All any apparent variations of being extended out within the spirit and principles in the present invention or change are still among the protection domain in the invention claim.
Claims (5)
1. an Electroencephalo experimental teaching unit, is characterized in that, comprises stimulation generation system, head location system, eeg amplifier, data acquisition unit, data processing unit and the Data Comparison unit of communication connection successively.
2. Electroencephalo experimental teaching unit according to claim 1, it is characterized in that, described stimulation generation system is in order to produce the host work station of stimulus signal, the input sensory channel that presents order, stimulates that arranges multiple stimulus signal according to patient's the course of disease, compromised brain function degree and impaired brain district, described host work station is connected with described head location system communication by interface.
3. Electroencephalo experimental teaching unit according to claim 2, it is characterized in that, described head location system comprises an electrode cap, electrode cap is connected by interface communication with described host work station, in described electrode cap, be provided with 10-20 electrode arranging system, described 10-20 electrode arranging system is connected with the collection port of described eeg amplifier.
4. Electroencephalo experimental teaching unit according to claim 3, it is characterized in that, described eeg amplifier comprises the direct current amplifying unit in order to signal is amplified and analogue signal is converted to the AD converting unit of digital signal, the signal input part of described direct current amplifying unit and the communication connection of described 10-20 electrode arranging system, described direct current amplifying unit and the communication connection of described AD converting unit, the signal output part of described AD converting unit is connected with the input of described data acquisition unit.
5. Electroencephalo experimental teaching unit according to claim 4, is characterized in that, described eeg amplifier is the eeg amplifier with single-stage amplifying circuit and bipolar amplifying circuit.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105193410A (en) * | 2015-09-14 | 2015-12-30 | 武汉智普天创科技有限公司 | EEG (electroencephalogram) signal amplifying system |
| CN107589700A (en) * | 2017-10-16 | 2018-01-16 | 浙江大学 | A kind of EEG signals simulation generator |
| CN108523885A (en) * | 2018-04-25 | 2018-09-14 | 中国人民解放军第四军医大学 | The detection device of olfactory stimulation induced brain wave |
| CN117045495A (en) * | 2023-08-14 | 2023-11-14 | 博奥生物集团有限公司 | Acupoint positioning system and positioning control method and device thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105193410A (en) * | 2015-09-14 | 2015-12-30 | 武汉智普天创科技有限公司 | EEG (electroencephalogram) signal amplifying system |
| CN107589700A (en) * | 2017-10-16 | 2018-01-16 | 浙江大学 | A kind of EEG signals simulation generator |
| CN107589700B (en) * | 2017-10-16 | 2024-06-04 | 浙江大学 | Electroencephalogram signal simulation generating device |
| CN108523885A (en) * | 2018-04-25 | 2018-09-14 | 中国人民解放军第四军医大学 | The detection device of olfactory stimulation induced brain wave |
| CN117045495A (en) * | 2023-08-14 | 2023-11-14 | 博奥生物集团有限公司 | Acupoint positioning system and positioning control method and device thereof |
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