Table 1. Criteria for Categorizing Individual Cells.

The numbers of cells within each category are shown in parentheses (total n = 128).

		Significantly tuned?	Response field orientation (deg)	Separability
Hand-centered (11 cells satisfy 8/9 criteria)	TH	Yes (53)	−90 (86)	Inseparable (103)
	TG	Yes (35)	0 (62)	Separable (26)
	HG	Yes (36)	0 (49)	Separable (30)
Gaze-centered (7 cells satisfy 8/9 criteria)	TH	Yes (53)	0 (43)	Separable (25)
	TG	Yes (35)	−90 (59)	Inseparable (102)
	HG	Yes (36)	−180 (31)	Separable (30)
Hand – gaze (1 cell satisfies 8/9 criteria)	TH	Yes (53)	−180 (27)	Separable (25)
	TG	Yes (35)	−180 (21)	Separable (26)
	HG	Yes (36)	−90 (62)	Inseparable (98)