Decoding Kinematics from Human Parietal Cortex using Neural Networks
Abstract
Brain-machine interfaces have shown promising results in providing control over assistive devices for paralyzed patients. In this work we describe a BMI system using electrodes implanted in the parietal lobe of a tetraplegic subject. Neural data used for the decoding was recorded in five 3-minute blocks during the same session. Within each block, the subject uses motor imagery to control a cursor in a 2D center-out task. We compare performance for four different algorithms: Kalman filter, a two-layer Deep Neural Network (DNN), a Recurrent Neural Network (RNN) with SimpleRNN unit cell (SimpleRNN), and a RNN with Long-Short-Term Memory (LSTM) unit cell. The decoders achieved Pearson Correlation Coefficients (ρ) of 0.48, 0.39, 0.77 and 0.75, respectively, in the Y-coordinate, and 0.24, 0.20, 0.46 and 0.47, respectively, in the X-coordinate.
Additional Information
© 2019 IEEE. This IRB approved research was supported by Chen Institute for Neuroscience at the California Institute of technology (Caltech), Pasadena, CA USA 91125.Additional details
- Eprint ID
- 95764
- DOI
- 10.1109/ner.2019.8717137
- Resolver ID
- CaltechAUTHORS:20190523-133828806
- Tianqiao and Chrissy Chen Institute for Neuroscience
- Created
-
2019-05-23Created from EPrint's datestamp field
- Updated
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2023-03-15Created from EPrint's last_modified field
- Caltech groups
- Tianqiao and Chrissy Chen Institute for Neuroscience