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該論文主要設(shè)計了一款便攜式、多通道、低功耗的腦電VR集成系統(tǒng)，主要用于心理狀態(tài)評估與心理疾病輔助康復(fù)，利用該系統(tǒng)，已完成80余例焦慮狀態(tài)的腦電信號檢測，并進行腦電信號分析與焦慮分級。
The combination of Virtual Reality (VR) technology and Electroencephalography (EEG) measurements
has shown tremendous potential in the fields of psychology and neuroscience research.
However, the majority of EEG measurement devices currently available are expensive, bulky,
uncomfortable to wear, and difficult to integrate with VR headsets. These limitations have hindered
the development of related research fields. This study describes a low-cost (60.07 USD),
small-sized, wireless, high-precision, low-power consumption 4-channel EEG measurement system
(NeuroVista) for frontal area EEG measurements, which can be used with a VR headset,
enabling EEG measurements in VR environments. The system has an input-referred noise of less
than 0.9480 μVrms, a common mode rejection ratio of over 96 dB, a measurement resolution of
less than 0.1 μV, a bandwidth of 0.5 ~ 45 Hz, and works at a sampling rate of 250 Hz. It also
supports metal dry electrodes and includes a built-in analog bandpass filter, right-leg drive circuit,
and built-in digital lowpass filter and notch filter, which can reduce noise during measurement.
Researchers can reconstruct the electrode system to measure regions of interest
according to their needs.
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