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An online neuro-robotic platform in the form of a small vehicle, the “RatCar” has been developed. First, a rat had neural electrodes implanted in the motor cortices to record extracellular potentials. Then, our system combined the rat and its vehicle body by hanging the rat under its floor. In this paper, an experimental platform is proposed to observe and analyze motor commands by correlating neural...
Electromyographic (EMG) signals have been used to control active prosthetic arms for amputees. One of the obstacles in making such prosthetic arms is the timed estimation of posture, because EMG signals and muscle movements are not necessarily synchronized. We estimated the finger motions for trumpet players by using both surface EMG (sEMG) and the timing information using body motion. The algorithms...
We have developed a brain-machine interface (BMI) that we call the RatCar. The system consists of a vehicle body to support a rat, a locomotion estimator based on neural signals recorded in the rat's motor cortex, and an optical behavior recorder. We chronically implanted wire electrodes in the motor cortex of a rat's brain to record neural signals while the position and the body direction of the...
We have developed a brain-machine interface (BMI) in the form of a small vehicle, which we call the RatCar. In this system, we implanted wire electrodes in the motor cortices of rat's brain to continuously record neural signals. We applied a linear model to estimate the locomotion state (e.g., speed and directions) of a rat using a weighted summation model for the neural firing rates. With this information,...
A prototype of a small vehicle controlled by the neural signals from the primary motor cortex of a rat's brain that we named 'RatCar' system has been developed. We implanted wire electrodes in the regions of a rat's brain that control the hind limbs to chronically record its neural signals. Next, we assumed a linear model to estimate the walking speed of a rat by the weighted firing rates in the primary...
In this paper, descriptions of various flexible neural probes and a rat car system, which we developed, are presented. The probe is sufficiently flexible to enable minimally invasive recording. Some of these probes have micro-fluidic channels integrated into the probe that can be used to inject chemicals into neural tissues and achieve a stable interface with the nervous system. The focus is on issues...
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