Table 2.

Spearman rank–rank correlations between spike parameters and measures of rhythmicity during swimming and scratching

	Sw Osc Amp r_s	Sw Osc Amp p	Sc Osc Amp r_s	Sc Osc Amp p	Sw MVL r_s	Sw MVL p	Sc MVL r_s	Sc MVL p
Membrane potential	−0.21	0.15	−0.27	0.057	−0.15	0.36	−0.15	0.31
Spike height	0.32	0.007	0.31	0.01	0.1	0.46	0.03	0.79
Spike width	0.08	0.54	0.006	0.97	0.14	0.33	0.006	0.96
AHP amplitude	0.08	0.50	0.17	0.17	0.11	0.43	0.12	0.32
AHP duration	−0.36	0.002	−0.26	0.03	−0.07	0.62	−0.08	0.51

Sw, swimming; Sc, scratching; Osc, oscillation; Amp, amplitude; MVL, mean vector length; r_s, correlation coefficient; p, probability; AHP, afterhyperpolarization. Note that the only statistically significant correlations were between spike height and oscillation amplitudes and between AHP duration and oscillation amplitudes.