Amacrine cells are a type of interneuron found in the retina of the eye. They play a crucial role in processing visual information by connecting bipolar cells to ganglion cells. These cells help integrate and modulate signals before they are sent to the brain, contributing to various aspects of vision, such as contrast sensitivity and motion detection. There are many types of amacrine cells, each with distinct functions and neurotransmitters. They can influence the activity of other retinal cells through both excitatory and inhibitory signals, making them essential for the complex processing of visual stimuli in the visual system.