Neuromorphic systems emulate the organization and function of nervous systems. They are
usually composed of analogue electronic circuits that are fabricated in the complementary …

The computational power of formal models for networks of spiking neurons is compared with
that of other neural network models based on McCulloch Pitts neurons (ie, threshold gates) …

A functional two-dimensional silicon retina that computes a complete set of local direction-
selective outputs is reported. The chip motion computation uses unidirectional delay lines as …

We present two algorithms for estimating the velocity of a visual stimulus and their
implementations with analog circuits using CMOS VLSI technology. Both are instances of so …

Attentional selectivity tends to follow events considered as interesting stimuli. Indeed, the
motion of visual stimuli present in the environment attract our attention and allow us to react …

Apparent motion of the surroundings on an agent's retina can be used to navigate through
cluttered environments, avoid collisions with obstacles, or track targets of interest. The …

Visual motion estimation is a computationally intensive, but important task for sighted
animals. Replicating the robustness and efficiency of biological visual motion estimation in …

Estimating the speed and direction of moving objects is a crucial component of agents
behaving in a dynamic world. Biological organisms perform this task by means of the neural …

This paper discusses some of the fundamental issues in the design of highly parallel, dense,
low-power motion sensors in analog VLSI. Since photoreceptor circuits are an integral part …

An integrated circuit with on-chip photoreceptors is described, that computes the bi-
directional velocity of a visual stimulus moving along a given axis in the focal plane by …