实现滑动去趋势波动分析，程序内部有解释，在MDFA文件中可以改变相应的参数值，使结果更好。x中存放的是脑电信号，这里没有上传。可以根据需要，用这种方法处理不同数据。-Achieve sliding detrended fluctuation analysis, is explained within the program, the file can be changed in the MDFA the corresponding parameter values ​ ​ so that the results better. x is stored in the brain signal, there is no upload. As needed, using this method to deal with different data.