Table 3.

Circular statistics for forelimb-hindlimb coordination before and after staggered hemisections

		1:1 coordination	2:1, 1st forelimb cycle	2:1, 2nd forelimb cycle
Cat ID	Time points	r	r	r
TO	Intact	0.79*	-	-
	Hemi 1, wk 2	-	0.74*	0.68*
	Hemi 1, wk 8	-	0.75*	0.44*
	Hemi 2, wk 3	0.91*	0.42	0.60*
	Hemi 2, wk 7	-	0.70*	0.64*
JA	Intact	0.86*	-	-
	Hemi 1, wk 2	0.45	0.64	0.27
	Hemi 1, wk 8	0.74*	0.30	0.35
	Hemi 2, wk 2	-	0.83*	0.86*
	Hemi 2, wk 6	-	0.58*	0.33
AR	Intact	0.88*	-	-
	Hemi 1, wk 2	0.94*	0.85	0.49
	Hemi 1, wk 8	-	0.84*	0.80*
	Hemi 2, wk 1	0.80*	0.47*	0.54*
	Hemi 2, wk 7	-	0.51*	0.57*
HO	Intact	0.97*	-	-
	Hemi 1, wk 2	0.57*	0.23	0.48
	Hemi 1, wk 8	0.69*	-	-
	Hemi 2, wk 3	0.44	0.46	0.48
	Hemi 2, wk 7	0.87*	0.42	0.42
MB	Intact	0.96*	-	-
	Hemi 1, wk 2	-	0.23	0.54*
	Hemi 1, wk 7	0.52	0.33	0.50*
	Hemi 2, wk 3	0.71*	0.39	0.49
	Hemi 2, wk 8	0.60*	0.48	0.10
GR	Intact	1.00*	-	-
	Hemi 1, wk 1	0.92*	-	-
	Hemi 1, wk 8	0.75*	0.37	0.17
	Hemi 2, wk 3	0.38	0.61*	0.12
	Hemi 2, wk 8	0.44	0.41	0.39
KA	Intact	0.97*	-	-
	Hemi 1, wk 2	0.93*	0.12	0.64
	Hemi 1, wk 8	0.85*	0.42	0.12
	Hemi 2, wk 3	-	0.46*	0.38
	Hemi 2, wk 7	0.97*	0.48	0.57*
PO	Intact	0.90*	-	-
	Hemi 1, wk 1	0.88*	0.55	0.70*
	Hemi 1, wk 8	0.13	-	-
	Hemi 2, wk 4	0.46	0.46*	0.47*
	Hemi 2, wk 7	-	0.35	0.43

The table shows r values from Rayleigh’s test at the different time points for individual cats before and after hemisections for cycles with 1:1 and 2:1 (first and second forelimb cycles) coordination for right homolateral coupling (the phasing between right forelimb and right hindlimb contacts). The r value measures the dispersion of phase interval values around the mean, with a value of 1 indicating a perfect concentration in one direction and a value of 0 indicating uniform dispersion. We performed Rayleigh’s z test: z = nr², where n is the sample size (number of cycles) and compared the z value to a critical z value on Rayleigh’s table to determine whether there was a significant concentration around the mean (p < 0.05). Asterisks indicate a significant r value. The left column is cat identification (ID). wk = week.