A bio-physically inspired silicon neuron
A bio-physically inspired silicon neuron
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DOI：
10.1109/tcsi.2004.842871
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发表时间：
2005-03-01
影响因子：
5.1
通讯作者：
Hasler, P
中科院分区：
文献类型：
--
作者：
Farquhar, E;Hasler, P
支配离子流动的物理原理。在生物领域，神经元与电子流经MOSFET晶体管的通道有有趣的相似之处。在这里，描述了一种电路，它比以前的方法更好地利用这些相似性来构建具有类似于真实生物的电特性的优雅电路。神经元。讨论了一个包括钠(Na+)和钾(K+)的双通道模型。钠离子通道使用四个晶体管和两个电容。K+通道使用两个晶体管和一个电容器。另一个电容器模拟神经元膜电容，产生四个电容器和六个晶体管的总电路。该电路实时工作，采用标准的cmos工艺，工作在亚阈值下，电源与真实生物的电源相似。这个电路的电压和电流响应在形状、大小和时间上都与生物学很好地吻合。
The physical principles governing ion flow. in biological neurons share interesting similarities to electron flow through the channels of MOSFET transistors. Here, is described a circuit which exploits the similarities better than previous approaches to build an elegant circuit with electrical properties similar to real biological. neurons. A two-channel model is discussed including sodium (Na+) and potassium (K+). The Na+ channel uses four transistors and two capacitors. The K+ channel uses two transistors and one capacitor. One more capacitor simulates the neuron membrane capacitance yielding a total circuit of four capacitors and six transistors. This circuit operates in real-time, is fabricated on standard CMOS processes, runs in subthreshold, and has a power supply similar to that of real biology. Voltage and current responses of this circuit correspond well with biology in terms of shape, magnitude, and time.