Fig. 9.

FF activity is not saccade-related activity or a RF response. A: for the example neuron presented in Fig. 3, when the monkey made a saccade without a FF stimulus, the neuron did not respond (black trace), in contrast to the case with the FF stimulus present (blue trace). B: for the same neuron, a FF stimulus flashed while the monkey fixated without making a saccade did not activate the neuron (black trace). This activity is different from that elicited by a visual stimulus placed in the RF (red trace).