Figure 4.

Temporal encoding of texture during drift: a schematic description. Retinal mosaic scans a stationary smooth (A) and patterned (B) surfaces during horizontal drift (movement parameters and other conventions as in Figures 2 and 3). Every crossing of a light-to-dark luminance border by a single ganglion RF generates a single spike. For clarity, spikes are drawn only during one direction of drift (the “protraction” direction).