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- Title
An Artificial Autonomic Nervous System That Implements Heart and Pupil as Controlled by Artificial Sympathetic and Parasympathetic Nerves.
- Authors
Liu, Lu; Ni, Yao; Liu, Jiaqi; Wang, Yihang; Jiang, Chengpeng; Xu, Wentao
- Abstract
The autonomic nervous system maintains homeostasis in organisms through complex neural pathways and responds adaptively to changes in the external and internal environment. The fabrication of an artificial autonomic nervous system is reported that replicates combined effects of sympathetic and parasympathetic nerves on cardiac activity and pupillary control, to mimic the regulation of autonomic nervous system to external changes. The artificial autonomic nerve‐controlled pupil contraction and relaxation, modulating the rate of heartbeats for normal cardiac rhythm and arrhythmia as reflected by blink rates of a signal indicator. These functions are switched by using a parallel‐channeled synaptic transistor with a special n‐i‐p heterostructure that has a 2D h‐BN insulator in the middle to provide barrier against ion injection into the 2D MoS2 bottom n‐channel and enable short‐term plasticity as induced by acetylcholine, and the electrochemical doping reaction occurred at the P3HT nanowire p‐channels on top to enable relatively long‐term plasticity as induced by noradrenaline. Low‐energy consumption down to femtojoule and an ultrahigh paired‐pulse facilitation index up to ≈455% are demonstrated. An artificial neural network based on device characteristics achieves a high recognition accuracy for electrocardiogram patterns. This study extends insights into artificial nerves‐inspired biological signal processing and recognition.
- Subjects
PARASYMPATHETIC nervous system; AUTONOMIC nervous system; INNERVATION of the heart; NEURAL pathways; ARRHYTHMIA; NERVES; SIGNAL processing
- Publication
Advanced Functional Materials, 2023, Vol 33, Issue 9, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202210119