The single-trial extraction method of single-channel flash visual evoked potential(FVEP) signal based on empirical mode decomposition(EMD) has been studied.

With several montages of component features from 4 channels,and with carefully parameters optimizing,the single-trial estimation of evoked potentials using support vector.

One of the key issues in constructing a brain-computer interface is the single-trial estimation of its communication carriers.

Single-trial estimation of ERP plays an important role both in clinic and in advanced brain function research.

To realize the single extraction of auditory induced potential by wavelet transformation;

In this paper, the basic properties, behavior of residual microcrystal in industry glutamic acid mother liquid, especially secondary extraction of glutamic acid which is the key technology of“Glutamic acid extraction of non-waste process with double crystallization”are studied.