相关实验视频
Updated: Jul 15, 2025
07:38
Author Spotlight: Modular Neuronal Networks for Analyzing Brain Functions
Published on: June 7, 2024
1.6K
灵活的单极IGZO基于晶体管的整合和火神经元用于尖端神经形态应用程序
IEEE transactions on biomedical circuits and systems
|October 2, 2023
概括
研究人员使用无形InGaZnO薄膜晶体管开发了可适应的Axon-Hillock电路,用于神经网络. 这些电路具有可调节的燃烧特性和低功耗,使环境相互作用具有生物学相关的时间表.
科学领域:
- 材料科学与工程 材料科学与工程
- 神经科学是一个神经科学.
- 电气工程 电气工程
背景情况:
- 尖端神经网络 (SNN) 对于模仿生物大脑功能至关重要.
- 阿克森 - 希洛克电路是SNN的基本组成部分,调节神经元发射.
- 现有的实施方案往往缺乏适应性和能源效率.
研究的目的:
- 使用新型薄膜晶体管技术设计和制造可适应的Axon-Hillock电路.
- 探索神经元属性的适应性,如峰值频率和宽度.
- 为了展示功能,如值电压适应和耐火周期调制.
主要方法:
- 在柔性聚胺基板上使用单极无极InGaZnO薄膜晶体管制造Axon-Hillock电路.
- 直接材料沉积和图案制作技术.
- 电路属性的表征,包括发射频率,尖峰宽度,值电压和功耗.
主要成果:
- 在输出尖峰频率和宽度方面表现出一致的适应性.
- 实现了值电压适应,输入信号差异化和耐火周期调制.
- 在单个电压输入时,燃烧频率呈现出三级变化.
- 报告的超低的平均功耗在nW范围内,每次峰值的能量低 (≈700 pJ在30 Hz).
结论:
- 开发的Axon-Hillock电路为尖端神经元模型提供了显著的适应性.
- 该技术可以在生物学上相关的时间尺度 (毫秒到秒) 上进行操作.
- 低功耗和高适应性为可扩展的SNN为环境交互和学习铺平了道路.
相关概念视频
01:25Neural Circuits
1.3K
Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
1.3K
01:19The Role of Ion Channels in Neuronal Computation
3.2K
A postsynaptic neuron usually receives numerous impulses from several other presynaptic neurons. The axon hillock of the postsynaptic neuron integrates all these signals and determines the likelihood of firing an action potential.
Sometimes a single EPSP is strong enough to induce an action potential in the postsynaptic neuron. However, multiple presynaptic inputs must often create EPSPs around the same time for the postsynaptic neuron to be sufficiently depolarized to fire an action potential....
Sometimes a single EPSP is strong enough to induce an action potential in the postsynaptic neuron. However, multiple presynaptic inputs must often create EPSPs around the same time for the postsynaptic neuron to be sufficiently depolarized to fire an action potential....
3.2K
01:28Electrical Synapses
8.4K
Electrical synapses found in all nervous systems play important and unique roles. In these synapses, the presynaptic and postsynaptic membranes are very close together (3.5 nm) and are actually physically connected by channel proteins forming gap junctions.
Gap junctions allow the current to pass directly from one cell to the next. In contrast, in the chemical synapse, the neurotransmitters carry the information through the synaptic cleft from one neuron to the next. They consist of two...
Gap junctions allow the current to pass directly from one cell to the next. In contrast, in the chemical synapse, the neurotransmitters carry the information through the synaptic cleft from one neuron to the next. They consist of two...
8.4K