Publication Type |
pre-print |
School or College |
College of Engineering |
Department |
Electrical & Computer Engineering |
Creator |
Mathews, V. John |
Other Author |
Dantas, Henrique; Kellis, Spencer; Greger, Bradley |
Title |
Neural decoding using a nonlinear generative model for brain-computer interface |
Date |
2014-01-01 |
Description |
Kalman filters have been used to decode neural signals and estimate hand kinematics in many studies. However, most prior work assumes a linear system model, an assumption that is almost certainly violated by neural systems. In this paper, we show that adding nonlinearities to the decoding algorithm improves the accuracy of tracking hand movements using neural signal acquired via a 32-channel micro-electrocorticographic (μECoG) grid placed over the arm and hand representations in the motor cortex. Experimental comparisons indicate that a Kalman filter with a fifth order polynomial generative model relating the hand kinematics signals to the neural signals improved the mean-square tracking performance in the hand movements over a conventional Kalman filter employing a linear system model. This finding is in accord with the current neurophysiological understanding of the decoded signals. |
Type |
Text |
Publisher |
Institute of Electrical and Electronics Engineers (IEEE) |
First Page |
4683 |
Last Page |
4687 |
Language |
eng |
Bibliographic Citation |
Dantas, H., Kellis, S., Mathews, V. J., & Greger, B. (2014). Neural decoding using a nonlinear generative model for brain-computer interface. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 4683-7. |
Rights Management |
(c) 2014 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. |
Format Medium |
application/pdf |
Format Extent |
4,163,019 bytes |
Identifier |
uspace,18887 |
ARK |
ark:/87278/s60s2zjz |
Setname |
ir_uspace |
ID |
712657 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s60s2zjz |