Figure 1.

Identification of major RGC types in primate retina using visual response properties. Center, Receptive field (RF) diameter and the first principal component (PC1) of the STA time course were used to subdivide the cells recorded in a single preparation into distinct groups. Surrounding, RFs of cells in each group tiled visual space. Ellipses depict the 1.25 SD boundaries of Gaussian fits to the spatial component of the STA (see Materials and Methods). Hexagons represent the outline of the electrode array and filled gray circles indicate electrode positions. Some cells with RFs lying outside the array boundary were detected based on axonal signals (see Materials and Methods).