Dynamic Concerted Activities among Retinal Ganglion Cells

Concerted firing is one of the important ways for neurons to encode sensory stimuli. In the present study, we investigated dynamic concerted activities among retinal ganglion cells (RGCs) in response to natural movie and pseudo-random checkerboard flicking stimuli. The results showed that concerted activity patterns among RGCs changed dynamically during both stimuli, which were represented by the number of synchronously activated neurons and synchronous groups formed among the activated neurons. During natural movie stimulation, concerted activities were varying with time. On the contrary, the number of synchronized neurons and synchronous groups during pseudo-random checkerboard stimulation had a decreasing tendency.