Classifier Performance in Primary Somatosensory Cortex Towards Implementation of a Reinforcement Learning Based Brain Machine Interface

Proceedings of the ... Southern Biomedical Engineering Conference
David McNielJoseph Francis

Abstract

Increasingly accurate control of prosthetic limbs has been made possible by a series of advancements in brain machine interface (BMI) control theory. One promising control technique for future BMI applications is reinforcement learning (RL). RL based BMIs require a reinforcing signal to inform the controller whether or not a given movement was intended by the user. This signal has been shown to exist in cortical structures simultaneously used for BMI control. This work evaluates the ability of several common classifiers to detect impending reward delivery within primary somatosensory (S1) cortex during a grip force match to sample task performed by a nonhuman primate. The accuracy of these classifiers was further evaluated over a range of conditions to identify parameters that provide maximum classification accuracy. S1 cortex was found to provide highly accurate classification of the reinforcement signal across many classifiers and a wide variety of data input parameters. The classification accuracy in S1 cortex between rewarding and non-rewarding trials was apparent when the animal was expecting an impending delivery or an impending withholding of reward following trial completion. The high accuracy of classification in S1 co...Continue Reading

Related Concepts

Related Feeds

Barrel cortex

Here is the latest research on barrel cortex, a region of somatosensory and motor corticies in the brain, which are used by animals that rely on whiskers for world exploration.

Related Papers

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society
David McNielJoseph Francis
Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Eric A PohlmeyerJustin C Sanchez
The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Brandi T MarshJoseph T Francis
Proceedings of the ... Southern Biomedical Engineering Conference
Mohammad BatainehJoseph Francis
© 2021 Meta ULC. All rights reserved