Research And Design Of The Sistem That Getting And Handling Mice Brain Signal

Electroencephalogram(EEG) signal is a general reflection of electrical activities in the cortical layer, which contains kinds of physiological information and much pathological information. EEG can embodies in not only organisms'health condition, but also the complex psychological and physiological condition. The research on EEG is very important to clinical remedy.With the universal of computer technology, the brain-computer interface(BCI) system has become the main method of researching EEG. In order to analyze final result, the EEG needs to be gathered, handled, and displayed. The most important purpose of BCI is to provide a cybernation way to those people who do not depend on the brain normal output channels of peripheral nerves and muscles, and improve their life quality. BCI research has drawn attention of scientists in the rehabilitation engineering, biomedical engineering and human machine automatic control.This article is based on the lab education. With the study on the basic characteristic of EEG, we design a system which gather the EEG in the wireless way. This system is based on the hardware and software design. The hardware design includes voltage following circuit, amplify circuit, high-pass and low-pass filter circuit, ADC circuit, wireless and USB circuit. The software design uses the powerful Lab VIEW to transmit the EEG to the computer, and then digital filter, frequency spectrum analyze.With lots of experiments and failure, we finally finish the BCI system in the lab. It can display the steady signal waveform, which is the satisfied result and with great consulted value and application value.