Table 1.

Phase relationships between activity of rostral STN units and frontal ECoG

	Frequency range				STN lead	Latency (ms)
Record no.	(Hz)	n	r2	P value	(Y/N)	(±95%CL)
228 m	12.2	29.3	8	0.985	<0.00001	Y	41 ± 5
228r	7.3	17.1	5	0.814	0.0361	Y	39 ± 26
223k1	9.8	22	6	0.927	0.0021	Y	39 ± 15
228b	17.1	26.9	5	0.852	0.0253	Y	20 ± 15
227aa	17.1	29.3	6	0.890	0.0047	Y	38 ± 18
223b2	7.3	17.1	5	0.994	0.0028	Y	20 ± 4
223b2	22	31.7	5	0.915	0.0028	Y	11 ± 4
227z	7.3	29.3	10	0.679	0.0034	Y	21 ± 11
Mean	12.5	25.3	6.3				28.6
s.d.	5.6	5.8	1.8				11.8

STN, subthalamic nucleus; n, number of data points used in linear regression analysis. Note that unit 223b2 showed two peaks of coherence with electrocorticogram (ECoG; shown in Fig. 4C) so that two phase estimates were possible (see Fig. 4D).