Angewandte Chemie - International Edition
Angewandte Chemie - International Edition
5 years ago

Optical Communication among Oscillatory Reactions and Photo-Excitable Systems: UV and Visible Radiation Can Synchronize Artificial Neuron Models

Optical Communication among Oscillatory Reactions and Photo-Excitable Systems: UV and Visible Radiation Can Synchronize Artificial Neuron Models
Maria Sole Giubila, Andrea Nicoziani, Raimondo Germani, Aldo Romani, Anna Spalletti, B. Mark Heron, Pier Luigi Gentili
Neuromorphic engineering promises to have a revolutionary impact in our societies. A strategy to develop artificial neurons (ANs) is to use oscillatory and excitable chemical systems. Herein, we use UV and visible radiation as both excitatory and inhibitory signals for the communication among oscillatory reactions, such as the Belousov–Zhabotinsky and the chemiluminescent Orban transformations, and photo-excitable photochromic and fluorescent species. We present the experimental results and the simulations regarding pairs of ANs communicating by either one or two optical signals, and triads of ANs arranged in both feed-forward and recurrent networks. We find that the ANs, powered chemically and/or by the energy of electromagnetic radiation, can give rise to the emergent properties of in-phase, out-of-phase, anti-phase synchronizations and phase-locking, dynamically mimicking the communication among real neurons. Some light conversation: UV/visible radiation is a rich code for communicating excitatory and inhibitory signals among oscillatory reactions and photo-excitable systems, functioning as artificial neuron models. Pairs or triads of such chemical systems organized in both feed-forward and recurrent networks synchronize in phase, out of phase, in anti-phase and phase-locking as real neurons do through chemical neuro-transmitters.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/anie.201702289

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