Table 1. Peak power and coherence values for monkey GE.

		Coherence
Electrode site	Power		2			3			4			5			6
	Peak	f, Hz	Peak	f, Hz	lag, ms	Peak	f, Hz	lag, ms	Peak	f, Hz	lag, ms	Peak	f, Hz	lag, ms	Peak	f, Hz	lag, ms
1	NP		0.203	22	10	0.140	22	−6	0.080	22	1	0.072	22	−7	0.029	16	3
2	6.75	22		—		0.304	23	−17	0.144	23	−13	0.053	22	−19		NS
3	8.80	22		—			—		0.517	23	3	0.086	23	−3		NS
4	5.37	21		—			—			—		0.060	23	−6		NS
5	NP			—			—			—			—			NS
6	NP			—			—			—			—			—

Electrode site numbers correspond to the numbered locations in Fig. 2. The primary motor site is numbered 1, and the postcentral sites are numbered 2, 3, and 4. The two additional precentral sites are numbered 5 and 6. The columns under Power show the power (normalized by the mean power) of the largest spectral peak and its frequency in Hz. NP, no peak. In the columns under Coherence are shown the peak coherence value, peak frequency in Hz, and phase difference converted to time lag in milliseconds for each pair of sites. Values are shown only for coherence spectra determined to be significant by the permutation procedure described in Methods. NS, not significant.—, a redundant pairing or the pairing of a site with itself, because coherence is a pairwise measure between different sites. A positive number for the time lag indicates that the electrode site at the left leads the site at the top, and a negative number indicates that it lags.