The neuron as a direct data-driven controller

• 成果类型: Article
• 署名作者: Moore, Jason J.; Genkin, Alexander; Tournoy, Magnus; Pughe-Sanford, Joshua L.; van Steveninck, Rob R. de Ruyter; Chklovskii, Dmitri B.
• 署名单位: New York University; Simons Foundation; Flatiron Institute; Indiana University System; Indiana University Bloomington
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-8607
• DOI: 10.1073/pnas.2311893121
• 发表日期: 2024-07-02
• 关键词: pyramidal cells; spike; INFORMATION; plasticity; stimulation; reliability; movements; responses; release; STATES

摘要

In the quest to model neuronal function amid gaps in physiological data, a promising strategy is to develop a normative theory that interprets neuronal physiology as optimizing a computational objective. This study extends current normative models, which primarily optimize prediction, by conceptualizing neurons as optimal feedback controllers. We posit that neurons, especially those beyond early sensory areas, steer their environment toward a specific desired state through their output. This environment comprises both synaptically interlinked neurons and external motor sensory feedback loops, enabling neurons to evaluate the effectiveness of their control via synaptic feedback. To model neurons as biologically feasible controllers which implicitly identify loop dynamics, infer latent states, and optimize control we utilize the contemporary direct data -driven control (DD -DC) framework. Our DD -DC neuron model explains various neurophysiological phenomena: the shift from potentiation to depression in spike -timing -dependent plasticity with its asymmetry, the duration and adaptive nature of feedforward and feedback neuronal filters, the imprecision in spike generation under constant stimulation, and the characteristic operational variability and noise in the brain. Our model presents a significant departure from the traditional, feedforward, instant -response McCulloch-Pitts-Rosenblatt neuron, offering a modern, biologically informed fundamental unit for constructing neural networks.