Table 1.

Mean firing rate for each group of cells

	F	P	Rand1	Rand2	Total pop
n	84	87	234	219	1270
Firing rate (sp/s)	3.7	4.0	3.2	3.3	3.3
SD	4.2	4.6	4.7	5.3	5.0

Note: Data from 2 monkeys are combined. Firing rates were calculated using the data from 2-s period from the start of fixation (i.e., including both fixation period and minimal cue period). F and P indicate future- and previous-goal cells, respectively, and Rand1 and Rand2 indicate cells used for each group for random-pair analysis. “Total pop” denotes total population of cells, excluding both F and P cells.