A computationally efficient method for incorporating spike waveform information into decoding algorithms

Neural Computation
Valérie Ventura, Sonia Todorova

Abstract

Spike-based brain-computer interfaces (BCIs) have the potential to restore motor ability to people with paralysis and amputation, and have shown impressive performance in the lab. To transition BCI devices from the lab to the clinic, decoding must proceed automatically and in real time, which prohibits the use of algorithms that are computationally intensive or require manual tweaking. A common choice is to avoid spike sorting and treat the signal on each electrode as if it came from a single neuron, which is fast, easy, and therefore desirable for clinical use. But this approach ignores the kinematic information provided by individual neurons recorded on the same electrode. The contribution of this letter is a linear decoding model that extracts kinematic information from individual neurons without spike-sorting the electrode signals. The method relies on modeling sample averages of waveform features as functions of kinematics, which is automatic and requires minimal data storage and computation. In offline reconstruction of arm trajectories of a nonhuman primate performing reaching tasks, the proposed method performs as well as decoders based on expertly manually and automatically sorted spikes.

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Apr 18, 2009·Proceedings of the National Academy of Sciences of the United States of America·Valérie Ventura
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Apr 25, 2012·Proceedings of the National Academy of Sciences of the United States of America·Valérie Ventura, Richard C Gerkin
Aug 6, 2013·IEEE Transactions on Bio-medical Engineering·David E CarlsonLawrence Carin
Oct 4, 2013·Journal of Neurophysiology·Fabian KloostermanMatthew A Wilson
Aug 2, 2014·Journal of Neural Engineering·Sonia TodorovaValérie Ventura

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Citations

Sep 29, 2017·Neural Computation·Sonia Todorova, Valérie Ventura
Apr 13, 2019·Annual Review of Statistics and Its Application·Robert E KassMark A Kramer
Feb 27, 2020·Journal of Neurophysiology·Deepa IssarMatthew A Smith
Aug 5, 2017·Frontiers in Neuroscience·Jie Li, Zheng Li

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