Multiplexed neurotransmission emulated for emotion control. (August 2021)

• Record Type: Journal Article
• Authors: Ni, Yao; Ma, Mingxue; Wei, Huanhuan; Gong, Jiangdong; Han, Hong; Liu, Lu; Xu, Zhipeng; Xu, Wentao
• Is Part Of: Nano energy. Volume 86(2021)
• Publication Date: 2021-08
• Subjects: Dual-excitatory -- Artificial synapse (AS) -- Switchable plasticity -- Automatic emotion regulation (AER) -- Electroencephalogram patterns; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2021.106038
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Emotions are closely related to multiplexed neurotransmission of glutamate and acetylcholine in the hippocampus, which are competitors and partners respectively. This paper demonstrates the first hetero-junction two-dimensional dual-excitatory artificial synapse (AS) for mimicking co-release of the two different neurotransmitters. This AS for the first time presents an immediate switchable plasticity between short-term of < 10 s and long-term of > 10 5 s, as both avoidance tendency of negative stimuli and lasting memory of positive emotion. 10 5 s represents so far the best long term memory of ion-regulated ASs. Inclusion of a fourth terminal as a monitor enables the emulation of automatic emotion regulation (AER). The AS array-based neural network achieves up to ~97% recognition accuracy for emotion-correlated electroencephalogram patterns; a new concept of early warning of negative emotions is proposed for monitoring mood changes, especially useful for babies and patients with mental disease, paving the way to future bio-inspired intelligent systems. Graphical Abstract: ga1 Highlights: An artificial synapse showed strong n -type/weak p -type bipolar characteristics for the synergy of two neurotransmitters. This device presented a switchable plasticity between short-term of several seconds and long-term of hours to days. The device achieved so far the longest memory duration of ion-regulated neuromorphic transistor up to 10 5 s. By introducing an additional monitoring terminal, our device implemented main functions of automatic emotion regulation (AER).