Table 1.

Details of macaque monkeys used for this investigation and in our parallel electrophysiological study (Olivier et al., 1997)

	Case	Age	Weight (kg)	Species	Sex	Anterograde labeling of CS projections	Densitometric analysis of C7–Th1	Electrophysiology
Neonate	7	5 d	0.6	m.m.	♀	+		+
Infants	15	1 month	0.6	m.m.	♂	+	+	+
	11	2.5 months	0.7	m.m.	♀	+	+	+
	2	3 months	0.7	m.m.	♀	+		+
	5	5 months	0.8	m.f.	♂	+	+	+
	4	7 months	1.0	m.f.	♀	+		+
	9	9 months	1.2	m.m.	♀	+	+	+
	8	11 months	2.9	m.m.	♂	+	+	+
	10	13 months	2.5	m.m.	♂	+		+
Adults	3	3 years	2.2	m.f.	♂	+	+
	6	3 years	2.1	m.f.	♀	+		+
	1	3 years	2.3	m.f.	♂			+
	12	12 years	5.9	m.m.	♀			+
	14	10 years	6.7	m.m.	♀			+

+, The monkey was used for the purpose indicated. m.m., m.f.,Macaca mulatta and M. fascicularis, respectively.