An intelligent brain machine interface with wireless micro-stimulation and neural recording
2014
This work presents an intelligent wireless brain machine interface with a biomedical core, two-channel micro-stimulating and neural recording. The biomedical core provides programmable discrete wavelet transform (DWT), DC removal and stimulation parameters setting and control. Neural stimulation is accomplished via voltage-controlled stimulation (VCS). With the proposed system, we can record and stimulate from the same neural electrodes, which can significantly reduce the stimulation artifact. Neural signals are time-division-multiplexed sampled by an A/D converter at a maximum rate of 4k samples per channel. The stimulation and recording of each channel can be controlled by a graphical user interface (GUI) on a laptop, and different types of neural signals can be observed independently.
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