Table 3.

Errors compared in different targets

	GPi (n = 9)	STN (n = 63)	Vim (n = 13)	ZI (n = 2)	p value
x coordinate	0.29 (0.16)	0.3 (0.55)	0.19 (0.28)	0.26 (0.4)	0.92
y coordinate	0.21 (o.17)	0.4 (0.5)	0.55 (0.24)	0.22 (0.24)	0.22
Radial error	0.38 (0.15)	0.60 (0.67)	0.69 (0.48)	0.34 (0.46)	0.45

This table illustrates the median (IQR) error for each target. GPi, globus pallidus interna; STN, subthalamic nucleus; Vim, ventral intermediate thalamic nucleus; ZI, zona incerta. n refers to the number of adjustments made per target. x and y coordinate errors are absolute errors. No statistically significant differences were found comparing x and y coordinate errors or radial errors.