CN1704022A - Electrode cap of brain electrical activity collection system - Google Patents
Electrode cap of brain electrical activity collection system Download PDFInfo
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- CN1704022A CN1704022A CN 200410022679 CN200410022679A CN1704022A CN 1704022 A CN1704022 A CN 1704022A CN 200410022679 CN200410022679 CN 200410022679 CN 200410022679 A CN200410022679 A CN 200410022679A CN 1704022 A CN1704022 A CN 1704022A
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Abstract
The invention provides a brain-electric collecting system electrode cap which is analogous to the helmet of motorbike. It is formed by a finite-shaped helmet and a number of probes. The invention can adjust the electrode according to the different dynamic of brain-electric collecting purpose, and can orientates the normal coordinate of electrode inside electrode cap and the real shape of the head.
Description
Technical field:
The invention belongs to electronic technology field, it is particularly related to the eeg collection system electrode cap.
Background technology:
The electrode cap that is used for the EEG measurement in early days adopts has certain elastic soft knit cap.The kind electrode medicated cap is fixed on electrode in the soft mesh grid of medicated cap.Electrode is to contact with measured's scalp by conductive paste.Because the nose shape of different people has certain difference, cause the tightness between the scalp of electrode and different parts on the electrode cap different, make this structure can not guarantee that all electrodes can both effectively contact with scalp, the measuring resistance of the electrode that causes increases, and it is inaccurate to measure the data that produce.Simultaneously in the eeg signal acquisition process, need to know measured's actual nose shape, so that the inner position that produces the source of signal of location brain.The method of existing measurement head true form mainly adopts the 3D digitizer, and this instrument comes perception probe present position by built-in high precision position and direction sensor, as long as the true form that head surface just can be determined head that slips over of the cardinal principle of popping one's head in.Though the true shape that this quasi-instrument can very accurate measurement brain, its cost is very expensive.
Known to the inventor, existing patent about electrode cap mainly contains two kinds:
(1) a kind of is the helmet type adjustable plate electrode cap (CN86102789A) that the screw electrode is housed that is connected into by plastic strip, fastening bolt, connection knob;
(2) another is latex tubing electrode cap (96119058.2,89200001.5,99200687.2), as shown in Figure 1; This invention is by temporo side sebific duct secured adjusted plate 1 fixed vertical sebific duct 2, and the fixed lower jaw pad 5 that is with of second round tightens up sebific duct 6 and forms in lucite grain 3 fixed horizontal sebific ducts 4 by having " ten " word cross bore on vertical sebific duct 2 and the temporo side sebific duct secured adjusted plate 1.The latex tubing electrode cap, puckery, the sticking hair of sebific duct often uses Pulvis Talci in the time of new, and time one long length hose is aging; Troublesome poeration when the adjustable plate electrode cap uses, complex structure.
Summary of the invention:
The purpose of this invention is to provide a kind of eeg collection system electrode cap, electrode and scalp loose contact during it can avoid measuring, also overcome the problem that the traditional electrode cap electrode can not move freely simultaneously, can be according to the adjustment electrode of the Different Dynamic of the purpose of brain wave acquisition, and the rectangular coordinate of electrode and the true form of head in the localizing electrode medicated cap.This electrode cap has the advantages that cost is low, cost performance is high.
A kind of eeg collection system electrode cap provided by the invention has comprised the brim of a hat 8 of decoration function and the restraint zone 9 of fixation, it is characterized in that it also comprises probe, is used to that the hole 10 of probe is installed and is convenient to the probe slot 11 that probe slides, as shown in Figure 2; Described probe is made up of bolt 12 and nut 13 two parts, and shown in Fig. 3,4, nut 13 is installed in the probe slot 11 of the helmet, and its overall diameter is slightly less than the width of the probe slot 11 of the helmet, so that nut 13 can be free to slide in probe slot 11; Nut 13 is to be placed in the probe slot 11 when making electrode cap 7; Have a nut 13 in each probe slot 11 at least, bolt 12 screws in the nut 13 and constitutes probe; Described bolt 12 is made up of electrode 14, bolt 12 top connecting rods 15, bolt 12 bottom connecting rods 16, connection ball 17, screw thread 18, lead 19, electrode 14 links to each other with bottom connecting rod 16 by connecting ball 17, can guarantee that like this electrode 14 is free movable, fully contact with scalp; Top connecting rod 15, bottom connecting rod 16 link to each other with screw thread 18 respectively, its middle and upper part connecting rod 15 indicates scale value (millimeter is unit), the inside of top connecting rod 15, bottom connecting rod 16, screw thread 18, connection ball 17 is hollow, places lead 19, as shown in Figure 3.
Need to prove that the quantity that is used to install the hole 10 of probe is determined according to typical electrode density standard; The material of probe can be identical with the material of making the helmet; At first to determine to install the position coordinates of probe aperture 10 in the process of fabrication and installation probe aperture 10.
The present invention is similar to the same helmet with definite shape of motorcycle helmet by one and the probe of some is formed, and helmet has certain thickness, material selection lightweight duroplasts.Can determine the helmet of several typical radius according to (China) size of head model for each person, so that select as required when using.
In sum, a kind of eeg collection system electrode cap provided by the invention, owing to adopt the hard helmet and bolt, nut structure, therefore electrode and scalp loose contact during it can avoid measuring, also overcome the problem that the traditional electrode cap electrode can not move freely simultaneously, can be according to the adjustment electrode of the Different Dynamic of the purpose of brain wave acquisition; Thereby so simultaneously since in the electrode cap position in each hole all indicate coordinate, probe and indicate the coordinate position that this electrode cap of scale can be used for demarcating electrode and utilize the method for interpolation to calculate the true form of head.This electrode cap has the advantages that cost is low, cost performance is high.
Accompanying drawing and description of drawings
The structural representation of the existing patent of Fig. 1 (96119058.2,89200001.5,99200687.2) about electrode cap;
The sketch map of Fig. 2 eeg collection system electrode cap of the present invention;
The bolt cut-away view of the probe of Fig. 3 eeg collection system electrode cap of the present invention;
The nut cut-away view of the probe of Fig. 4 eeg collection system electrode cap of the present invention;
Fig. 5. the top view of eeg collection system electrode cap of the present invention;
The specific embodiment
A kind of eeg collection system electrode cap that is applicable to that Chinese adult uses
Here we are that example is carried out the principle introduction with the typical sizes of the number of people of growing up, as shown in Figure 2.Helmet thickness is 1cm, and to adult crowd, the radius of the desirable hemispherical helmet is 12cm; Carry out the mesh design according to typical electrode density standard then.Electrodeplate commonly used on the present practice is 16,32,64,96,128 and 256.The counter electrode number is 161 o'clock a situation, generally adopts international 10-20 electrode standard to design.For other situation, both can select to make them head table distribute as far as possible equably (method of available computers optimization designs), (electrode density is big and shape itself head is also irregular also can to adopt proximate uniform distribution, make the fine difference of distribution of electrodes can not cause any substantial influence) to the collection of useful information, importantly we need know, when being applied to everyone, the actual position of these electrodes is so that extract the spatial information (si) of brain power supply.
Here, we are 12cm with the radius of the hemispherical helmet, and number of electrodes is that 96 situation is that example illustrates.At first the section radius at the hemispherical helmet is on the concentric circular of 11cm, 9cm, 7cm, 5cm, 3cm, mark each point spherical polar coordinates (θ, ); Be to make hole according to the intervals of per 15 degree on the concentric circular of 11cm, 9cm, 7cm at radius then perpendicular to hemisphere surface, it at radius the hole that makes vertical surface on the concentric circular of 5cm, 3cm according to the intervals of per 30 degree, the radius in hole is 1cm, making width between the Kong Yukong is the groove of 1.2cm, as shown in Figure 5.We just can obtain 96 holes like this, and 1 electrode that adds the crown is the position of totally 97 installing electrodes.The spatial resolution that the method for designing of kind electrode position meets the brain electricity is the requirement of 1-3cm.
Probe is according to the structure fabrication of probe shown in Fig. 3,4, and its concrete size is:
The thickness of nut 13 be 1cm, nut interior diameter be 0.6cm, overall diameter be 1cm, nut up and down the thickness at the edge of both sides be 1.4cm for the 0.2cm diameter; The diameter of top and the bottom connecting rod 15,16 is that 0.4cm, key diameter are 0.6cm in the bolt 12.
Probe can be installed on the helmet according to the requirement of user, and its quantity is smaller or equal to 97.Like this, just can produce the eeg collection system electrode cap that is applicable to that Chinese adult uses.
Be applicable to the using method of the eeg collection system electrode cap that Chinese adult uses:
Using method with the very routine explanation electrode cap of 96 conductions.Elder generation's installing electrodes on electrode cap before using, user's nut 13 and bolt 12 of whole traveling electrode as required arrives suitable position.Pinning nut 13 swivel bolts 12 then makes electrode closely contact with scalp.Use conductive paste can on electrode cap, with syringe conductive paste be injected into the electrode place in the fluting place so if desired.(θ ), simultaneously reads radius r by the scale at each electrode bolts 12 place just can to read the polar coordinate of the position of each electrode according to the position in each hole on the electrode cap after electrode bolts 12 fixes.Had spherical coordinates (r, θ, ) rectangular coordinate that just can be by simply calculating each electrode (x, y, z).Known the rectangular coordinate of electrode, so just can utilize the method for interpolation to draw measured's realistic head model on computers by these rectangular coordinates.Obviously, the design's the helmet both can be used for the measurement of brain electricity and the measurement of measured's capitiform, also can be used for the problem that capitiform or other analogous shape are measured separately.
Claims (3)
1, a kind of eeg collection system electrode cap has comprised the brim of a hat (8) of decoration function and the restraint zone (9) of fixation, it is characterized in that it also comprises probe, is used to install the hole (10) of probe and is convenient to the probe slot (11) that probe slides; Described probe is made up of bolt (12) and nut (13) two parts, and nut (13) is installed in the probe slot (11) of the helmet, and its overall diameter is slightly less than the width of the probe slot (11) of the helmet, and nut (13) can be free to slide in probe slot 11; Nut (13) is to be placed in the probe slot (11) when making electrode cap (7); Have a nut (13) in each probe slot (11) at least, bolt (12) screws in and constitutes probe in the nut (13); Described bolt (12) is made up of electrode (14), bolt (12) top connecting rod (15), bolt (12) bottom connecting rod (16), connection ball (17), screw thread (18), and electrode (14) links to each other with bottom connecting rod (16) by connecting ball (17); Top connecting rod (15), bolt (12) bottom connecting rod (16) link to each other with screw thread (18) respectively, and its middle and upper part connecting rod (15) indicates scale value (millimeter is unit); The inside of top connecting rod (15), bottom connecting rod (16), screw thread (18), connection ball (17) is hollow, places lead (19).
2, a kind of eeg collection system electrode cap according to claim 1 is characterized in that the quantity in the hole (10) of described installation probe is determined according to typical electrode density standard.
3, a kind of eeg collection system electrode cap according to claim 1 is characterized in that the material of described probe can be identical with the material of making the helmet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100226790A CN1315426C (en) | 2004-06-03 | 2004-06-03 | Electrode cap of brain electrical activity collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100226790A CN1315426C (en) | 2004-06-03 | 2004-06-03 | Electrode cap of brain electrical activity collection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1704022A true CN1704022A (en) | 2005-12-07 |
| CN1315426C CN1315426C (en) | 2007-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100226790A Expired - Fee Related CN1315426C (en) | 2004-06-03 | 2004-06-03 | Electrode cap of brain electrical activity collection system |
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| Country | Link |
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| CN (1) | CN1315426C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105395196A (en) * | 2015-12-17 | 2016-03-16 | 中国科学院苏州生物医学工程技术研究所 | Device and method for positioning EEG (electroencephalogram) or MEG (magnetoencephalogram) electrodes in brain MR (magnetic resonance) image |
| CN106073768A (en) * | 2016-05-31 | 2016-11-09 | 臧大维 | The non-invasive detection of human cortical brain's electroneurographic signal high sensitivity and analysis process system |
| CN106896903A (en) * | 2015-12-17 | 2017-06-27 | 上海酷景信息技术有限公司 | 360 degree of panoramas show body-sensing interaction systems |
| CN107049307A (en) * | 2017-05-02 | 2017-08-18 | 臧大维 | Full-automatic EEG signals read the helmet |
| CN108618779A (en) * | 2018-05-24 | 2018-10-09 | 广州哈罗博康复机器人生产有限公司 | Medical helmet |
| CN113730800A (en) * | 2021-08-19 | 2021-12-03 | 深圳英智科技有限公司 | Electrode cap integrating current stimulation and electroencephalogram acquisition |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4709702A (en) * | 1985-04-25 | 1987-12-01 | Westinghouse Electric Corp. | Electroencephalographic cap |
| CN1134807A (en) * | 1996-04-12 | 1996-11-06 | 广东省新会市中医院 | Simple type rubber tube cap of electrode |
| CN2354501Y (en) * | 1999-01-18 | 1999-12-22 | 霍彦芬 | Hemispheric electrode cap for electroencephalogram |
| US6594521B2 (en) * | 1999-12-17 | 2003-07-15 | Electrical Geodesics, Inc. | Method for localizing electrical activity in the body |
| CN2726526Y (en) * | 2004-06-03 | 2005-09-21 | 电子科技大学 | Electrode cap for brain wave collection system |
-
2004
- 2004-06-03 CN CNB2004100226790A patent/CN1315426C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105395196A (en) * | 2015-12-17 | 2016-03-16 | 中国科学院苏州生物医学工程技术研究所 | Device and method for positioning EEG (electroencephalogram) or MEG (magnetoencephalogram) electrodes in brain MR (magnetic resonance) image |
| CN106896903A (en) * | 2015-12-17 | 2017-06-27 | 上海酷景信息技术有限公司 | 360 degree of panoramas show body-sensing interaction systems |
| CN105395196B (en) * | 2015-12-17 | 2018-07-27 | 中国科学院苏州生物医学工程技术研究所 | Positioning device and method of EEG the or MEG electrodes in brain MR images |
| CN106073768A (en) * | 2016-05-31 | 2016-11-09 | 臧大维 | The non-invasive detection of human cortical brain's electroneurographic signal high sensitivity and analysis process system |
| CN107049307A (en) * | 2017-05-02 | 2017-08-18 | 臧大维 | Full-automatic EEG signals read the helmet |
| CN108618779A (en) * | 2018-05-24 | 2018-10-09 | 广州哈罗博康复机器人生产有限公司 | Medical helmet |
| CN113730800A (en) * | 2021-08-19 | 2021-12-03 | 深圳英智科技有限公司 | Electrode cap integrating current stimulation and electroencephalogram acquisition |
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| Publication number | Publication date |
|---|---|
| CN1315426C (en) | 2007-05-16 |
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Granted publication date: 20070516 Termination date: 20100603 |