Photoelectric electrode capable of synchronously collecting EEG signals and blood oxygen signals

A signal synchronization and EEG signal technology, which is applied in the field of brain science information acquisition, can solve the problems of inability to synchronize signals and collect them in the same area

Inactive Publication Date: 2013-12-18
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

[0005] The invention provides a photo-electric electrode for synchronously collecting EEG signals and blood oxygen signals, which solves the problem that the existing EEG collection system and the near-infrared spectrum brain functional imaging system cannot perform synchronous signal collection in the same area

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  • Photoelectric electrode capable of synchronously collecting EEG signals and blood oxygen signals
  • Photoelectric electrode capable of synchronously collecting EEG signals and blood oxygen signals
  • Photoelectric electrode capable of synchronously collecting EEG signals and blood oxygen signals

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] The invention provides a photoelectric electrode capable of synchronously collecting EEG signals and blood oxygen signals, which can be used to simultaneously monitor up to 64 channels of EEG signals and 42 channels of blood oxygen concentration change information. Near-infrared spectral brain functional imaging is an emerging brain imaging method in recent years, which uses near-infrared light with two or more wavelengths to detect changes in the concentration of oxyhemoglobin and deoxyhemoglobin in tissues. The near-infrared light is scattered into the brain tissue by the light pole of the transmitting end, and is received by the light pole of the receiving end at a certain distance of 3-4cm. The path of near-infrared light propagation in the brain tissue is banana-shaped, such as figure 1 shown.

[0018] Such as figure 2 As shown, the photo-electric electr...

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Abstract

A photoelectric electrode is capable of synchronously collecting EEG signals and blood oxygen signals. A disc electrode of an EEG collection system and a fiber probe of a near-infrared spectral cerebral function imaging system are integrated to form the photoelectric electrode. Therefore, the problem that cerebral neuronal firing activity and blood oxygen metabolic information cannot be collected synchronously is solved. The photoelectric electrode includes two separable parts, including an electrode part and a photo-electrode part. The electrode part is composed of a hollow disc electrode and a base and is used independently for collecting electroencephalograms; the photo-electrode part can be directly inserted into the base of the electrode part and is firmed through an L-shaped groove. On the basis of nationally standard 10-20 system electrode distribution, 64-channel EEG signals and 42-channel blood oxygen signals can be collected synchronously.

Description

technical field [0001] The invention relates to the field of brain science information acquisition, in particular to synchronous data acquisition of an EEG acquisition system and a near-infrared spectrum brain function imaging system. Background technique [0002] EEG signals are the main technical means to monitor the electrical activity of neurons, and are widely used in clinical and scientific research fields. Near-infrared spectral brain functional imaging is an emerging imaging technique that nondestructively detects changes in blood oxygen concentration induced by brain activity in tissues. Due to the small absorption of biological tissues in this near-infrared light band, near-infrared light can penetrate the scalp and skull to reach a depth of about 1.5cm in the cerebral cortex, and obtain oxyhemoglobin and deoxygenated hemoglobin that can reflect brain tissue metabolism and hemodynamic information. The amount of change in hemoglobin concentration. [0003] The spo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0478A61B5/1455
Inventor 徐刚李小俚
Owner BEIJING NORMAL UNIVERSITY
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