Electroencephalography head band applied to depressive emotion monitoring

Abstract

The invention discloses an electroencephalography head band applied to depressive emotion monitoring. The electroencephalography head band can be applied to analysis on emotional competence, attentionlevel, memory, outdoor activity time, exercise amount and other indexes by monitoring electroencephalogram of the prefrontal lobe, acceleration and photosensitive data and achieves real-time monitoring of depressive emotion. The electroencephalography head band comprises an electroencephalogram acquisition module, an acceleration module, a photosensitive module, a WIFI module, a processor module,an SD card module, an indicating lamp and button module and a power supply module. The electroencephalogram data, acceleration data and photosensitive data acquired by the electroencephalography headband are transmitted to an external upper computer through WIFI. The electroencephalography head band adopts a novel nanomaterial semi-flexible electrode to replace a traditional wet electrode, is put at the forehead part, is convenient and comfortable and has the advantages of being portable, low in power consumption and high in precision.

Description

technical field [0001] The invention relates to the technical field of biosensing and wearable devices, in particular to an EEG headband applied to depression monitoring. Background technique [0002] Electroencephalography (electroencephalogram, EEG) is a synthesis of potentials generated by the physiological activities of neuron cell bodies in the brain, and it has a wealth of brain activity information. It is widely used in clinical, scientific research and various applications. Clinical uses include: diagnosis of epilepsy, diagnosis of brain diseases, judgment of brain death and coma, etc.; applications in scientific research include: sleep EEG analysis, children's brain It is widely used in daily applications, including the following categories: sleep monitoring, brain-computer interface, real-time monitoring, and prediction of brain diseases. [0003] However, due to the very weak EEG signal, coupled with the particularity of human body impedance, external and interna...

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Problems solved by technology

[0003] However, due to the very weak EEG signal, coupled with the particularity of human body impedance, external and internal interference, etc., the traditional EEG acquisition system currently used in hospitals, the electrode cap with 64 / 18 / 256 leads, is regenerated by a separate amplifier device. access computer

There are the following problems: 1. The amplifier is large and heavy, and it is not easy to move the position; 2. The use of the electrode cap is cumbersome, not only requiring shampooing within 30 minutes before use and after the test is completed, but also the process of applying conductive paste (64 lead It takes about 30 minutes to connect the electrode cap), and it takes longer to use more leads; 3. Some people are allergic to conductive paste; 4. Because the EEG data is transmitted through the data line, the subjects cannot move around at will. According to experience, complete The detection process takes about 2 hours

The common problems of these portable EEG devices are: 1. The sampling rate is low enough to support scientific research purposes; 2. Signal preprocessing, almost all devices have carried out band-pass filtering to filter out high-frequency signals and low-frequency signals, which cannot Ensure the integrity of the original signal; 3. The appearance design of the device cannot meet the needs of use. As we all know, sleep EEG monitoring is one of the reference indicators for many diseases. This is because the EEG during sleep is not only more stable than the daily EEG , and the EEG reflects useful characteristic signals during sleep, but many current devices place hardware integration modules at the back of the brain, which hinders the comfort of sleep and is not conducive to the monitoring of sleep EEG

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