Table 3.

Electrophysiological characteristics of GPi neurons with subjects at rest versus during voluntary movement

	HD			PD
	rest	movement	p-value	rest	movement	p-value
# of neurons†	8	8		23	23
Mean firing rate	57.92 +/− 18.24	67.12 +/− 21.22	0.012*	85.50 +/− 18.65	102.06 +/− 24.12	0.007*
Burst index	4.89 +/− 1.79	3.97 +/− 1.18	0.050*	2.44 +/− 0.83	2.26 +/− 0.69	NS
Proportion of spikes in bursts	0.071 +/− 0.065	0.048 +/− 0.40	0.050*	0.066 +/− 0.069	0.033 +/− −.53	0.010*
L-statistic	5.50 +/− 0.53	5.38 +/− 0.52	NS	5.00 +/− 0.80	4.57 +/− 0.79	0.026*

^*denotes statistically significant difference between rest and voluntary movement by Wilcoxin paired sample test

^†Only neurons studied both at rest and during voluntary movement are included in this comparison