Table 1.

Summary of neuronal database^a

	MIo			SIo
	Total recorded	Preparatory epoch	Movement epoch	Total recorded	Preparatory epoch	Movement epoch
Monkey Y	597	47% (279)	77% (461)	628	38% (238)	74% (463)
Monkey B	392	61% (240)	85% (332)	278	33% (93)	67% (187)
Total	989	52% (519)	80% (793)	906	37% (331)	72% (650)

^aTotal number of neurons recorded from MIo and SIo across 6 training days (2nd and 5th columns). Proportion (%) of MIo and SIo neurons whose activity was modulated in the preparatory epoch (3rd and 6th columns) or movement epoch (4th and 7th columns). Shown for each monkey and as total for both monkeys. Numbers in parentheses correspond to the population size.