Results 91 to 100 of about 187,009 (324)

Role of zero synapses in unsupervised feature learning [PDF]

, 2017
Synapses in real neural circuits can take discrete values, including zero (silent or potential) synapses. The computational role of zero synapses in unsupervised feature learning of unlabeled noisy data is still unclear, thus it is important to understand how the sparseness of synaptic activity is shaped during learning and its relationship with ...
arxiv   +1 more source

Chiroferromagnetic Quantum Dots for Chiroptical Synapse (ChiropS)

Advanced Materials, EarlyView.
Chiroptical activity is enhanced by up to 0.003 in the g‐factor through the induction of ferromagnetism in quantum dots. A chiroptical neuromorphic synapse, composed of chiroferromagnetic quantum dots, generates different synaptic weights from multiple wavelengths and circularly polarized light.
Junyoung Kwon, Jae Bum Jeon, Walber Gonçalves Guimarães Júnior, Min Gu Lee, Changhyeon Lee, Geunyoung Kim, Hanchan Song, Woon Hyung Cheong, Sung Gap Im, André F. de Moura, Kyung Min Kim, Jihyeon Yeom   +11 more
wiley   +1 more source

Polyoxometalates‐Modulated Reduced Graphene Oxide Flash Memory with Ambipolar Trapping as Bidirectional Artificial Synapse

Advanced Electronic Materials, 2018
Employing flash memories that function as the analogue synapse cleft for implementation of neural systems is a popular approach. For practical application in synapse mimicking, ambipolar trapping of both holes and electrons enables the weight updated ...
Xiaoli Chen, Jingyi Pan, Jingjing Fu, Xin Zhu, Chen Zhang, Li Zhou, Yan Wang, Ziyu Lv, Ye Zhou, Su‐Ting Han   +9 more
doaj   +1 more source

Comparing domain wall synapse with other Non Volatile Memory devices for on-chip learning in Analog Hardware Neural Network [PDF]

arXiv, 2019
Resistive Random Access Memory (RRAM) and Phase Change Memory (PCM) devices have been popularly used as synapses in crossbar array based analog Neural Network (NN) circuit to achieve more energy and time efficient data classification compared to conventional computers.
arxiv  

Responsive Molecules for Organic Neuromorphic Devices: Harnessing Memory Diversification

Advanced Materials, EarlyView.
Responsive molecules are essential for organic in‐sensor computing devices. This Review highlights recent advances in thedesign, synthesis, and incorporation of electrically, optically, and magnetically responsive molecules in multifunctional synaptic perception devices endowedwith both nonvolatile and volatile memory diversification. By exploiting the
Yusheng Chen, Bin Han, Marco Gobbi, Lili Hou, Paolo Samorì   +4 more
wiley   +1 more source

A Neuransistor with Excitatory and Inhibitory Neuronal Behaviors for Liquid State Machine

Advanced Materials, EarlyView.
The neuransistor integrates hybrid excitatory and inhibitory dynamics, enabling liquid state machine implementation. It operates via charge trapping in a two‐dimensional electron electron gas (2DEG)/TiO2−x structure and features a three‐terminal design for efficient masking functionality. Simulations demonstrate its effectiveness in predicting temporal
Woon Hyung Cheong, Geunyoung Kim, Younghyun Lee, Eun Young Kim, Jae Bum Jeon, Do Hoon Kim, Kyung Min Kim   +6 more
wiley   +1 more source

Neurons Communication in the Hippocampus of Field CA3 of the White Rat Brain after Acute ischemia

Общая реаниматология, 2018
The aim of this study was to compare the pyramidal neurons, their processes and synapses in the stratum lucidum, stratum radiatum and stratum lacunosum of the molecular layer of the field CA3 of the hippocampus of the brain of white rats in the normal ...
A. S. Stepanov, V. A. Akulinin, S. S. Stepanov, D. B. Avdeev, A. V. Gorbunova   +4 more
doaj   +1 more source

Challenges and Opportunities of Upconversion Nanoparticles for Emerging NIR Optoelectronic Devices

Advanced Materials, EarlyView.
The special photo‐responsiveness of upconversion nanoparticles has opened up a new path for the advancement of near‐infrared (NIR)‐responsive optoelectronics. However, challenges such as low energy‐conversion efficiency and high nonradiative losses still persist.
Sunyingyue Geng, Hangfei Li, Ziyu Lv, Yongbiao Zhai, Bobo Tian, Ying Luo, Ye Zhou, Su‐Ting Han   +7 more
wiley   +1 more source

Next‐Generation Image Sensors Based on Low‐Dimensional Semiconductor Materials

Advanced Materials, EarlyView.
Low‐dimensional semiconductor materials are promising candidates for photosensitive components in next‐generation image sensors. This review offers a thorough and timely examination of novel image sensors, covering their working principles, intriguing materials categorized into four main groups, and advanced imaging applications.
Yunxia Hu, Zhaoli Gao, Zhengtang Luo, Liang An   +3 more
wiley   +1 more source

Stimulation of the Hippocampal POMC/MC4R Circuit Alleviates Synaptic Plasticity Impairment in an Alzheimer’s Disease Model

Cell Reports, 2016
Hippocampal synaptic plasticity is modulated by neuropeptides, the disruption of which might contribute to cognitive deficits observed in Alzheimer’s disease (AD).
Yang Shen, Min Tian, Yuqiong Zheng, Fei Gong, Amy K.Y. Fu, Nancy Y. Ip   +5 more
doaj   +1 more source