Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2020 Jun 2;117(22):12486-12496.
doi: 10.1073/pnas.1819707117. Epub 2020 May 19.

Spike-induced Ordering: Stochastic Neural Spikes Provide Immediate Adaptability to the Sensorimotor System

Affiliations

Spike-induced Ordering: Stochastic Neural Spikes Provide Immediate Adaptability to the Sensorimotor System

Shogo Yonekura et al. Proc Natl Acad Sci U S A. .

Abstract

Most biological neurons exhibit stochastic and spiking action potentials. However, the benefits of stochastic spikes versus continuous signals other than noise tolerance and energy efficiency remain largely unknown. In this study, we provide an insight into the potential roles of stochastic spikes, which may be beneficial for producing on-site adaptability in biological sensorimotor agents. We developed a platform that enables parametric modulation of the stochastic and discontinuous output of a stochastically spiking neural network (sSNN) to the rate-coded smooth output. This platform was applied to a complex musculoskeletal-neural system of a bipedal walker, and we demonstrated how stochastic spikes may help improve on-site adaptability of a bipedal walker to slippery surfaces or perturbation of random external forces. We further applied our sSNN platform to more general and simple sensorimotor agents and demonstrated four basic functions provided by an sSNN: 1) synchronization to a natural frequency, 2) amplification of the resonant motion in a natural frequency, 3) basin enlargement of the behavioral goal state, and 4) rapid complexity reduction and regular motion pattern formation. We propose that the benefits of sSNNs are not limited to musculoskeletal dynamics. Indeed, a wide range of the stability and adaptability of biological systems may arise from stochastic spiking dynamics.

Keywords: bipedal walking; instantaneous self-organization; musculoskeletal system; spike-induced ordering; spiking neural network.

Conflict of interest statement

The authors declare no competing interest.

Similar articles

See all similar articles

LinkOut - more resources

Feedback