Figure 13.
Strength of presaccadic differentiation across cell types. a, Presaccadic differential activity versus visually evoked activity for all (n = 119) recorded neurons. Abscissas indicate the mean firing rate in a time window following the display of the two yellow targets (50–250 ms with zero at stimulus onset), rVis, minus the baseline firing rate, rBase, calculated in a prestimulus window (−300 to 0 ms with zero at stimulus onset). The ordinate is the difference between correct responses into the RF, rIN (target in RF), and correct responses away from the RF, rOUT (distracter in RF), in a time window just before the saccade (−100 to 0 ms with zero at saccade onset). All processing times are included. Symbols correspond to neurons classified as M, VM, or V, as marked; small dots indicate other neurons. White circles and triangles are for VM neurons with and without significant differential activity, respectively. b, Differential presaccadic activity in long-rPT versus short-rPT trials for each recorded neuron. Short and long groups were defined as in Figure 4a. c, Differential activity in short-rPT and long-rPT trials averaged across neurons of the same type. The VM category includes both differential and nondifferential cells. The differentiation of M neurons was weaker in long-rPT compared with short-rPT trials (*p = 0.008, permutation test). All responses are in spikes/s.