A directionally-selective neuromorphic circuit based on reciprocal synapses in Starburst Amacrine Cells.

Starburst Amacrine Cells (SACs) play a major role in the detection of directional motion in the biological retina. The starburst amacrine cell has intrinsic electrical mechanisms for producing directional selectivity (DS). GABA transmitter-receptor interactions between two overlapping SACs make DS more robust.

A carbon nanotube cortical neuron with spike-timing-dependent plasticity.

This paper describes a carbon nanotube synapse circuit that exhibits Spike-Timing Dependant Plasticity (STDP). These synapses are found in cortical (e.g.