Table 2.

Volume of 10% WGA-HRP (in μl) injected into the primary motor cortex hand area in the different cases

Case	Age	WGA-HRP (μl)	Hand area	Area 4		Area 3a	Area 3b
				More medial	More rostral
7	5 d	4.0	+		+	+
15	1 month	4.6	+	+			+
11	2.5 months	4.6	+
2	3 months	8.1	+
5	5 months	4.9	+	+
4	7 months	4.7	+
9	9 months	5.6	+
8	11 months	5.5	+	+		+
10	13 months	5.6	+		+	+
3	3 years	8.7	+		+	+	+
6	3 years	4.6	+		+

Spread of the injection site to adjacent regions of M1 and to areas 3a and 3b is indicated.