Table 3.

Summary of the 20 independent components (IC) that were isolated by the tensorial Independent Component Analysis of the olfactory fMRI, including the explained variance of the signal, the effect size (s-mode) for each component (separately for healthy controls and PD patients), the p-value from the Mann-Whitney U test (only when p < .05) and the maximum spectral power (including the frequency in which that occurred). IC 6 was an olfactory component. IC 7 was a cerebellar component. n.s.: not significant, SD: standard deviation.

IC	Explained Signal Variance	s-mode healthy controls		s-mode PD patients		p	Spectral Power
		mean	SD	mean	SD		Max power	frequency (Hz/100)
1	15.29%	2.009	0.974	2.036	0.987	n.s.	5397	1.316
2	15.02%	2.041	0.896	1.813	1.166	n.s.	13,292	3.76
3	14.66%	1.762	0.786	1.910	0.888	n.s.	8637	3.948
4	14.41%	1.947	0.878	1.990	1.012	n.s.	8375	3.76
5	11.84%	1.662	0.737	1.662	0.728	n.s.	9162	3.948
6	7.80%	1.708	1.088	0.715	1.321	0.014	81,240	3.76
7	6.52%	1.461	0.943	0.503	1.635	0.026	60,551	3.76
8	5.54%	0.886	0.899	1.051	0.835	n.s.	8432	0.94
9	4.43%	0.900	1.869	0.594	0.596	n.s.	41,798	0.376
10	2.26%	0.155	1.790	0.179	0.691	n.s.	11,236	2.444
11	1.37%	0.546	1.945	0.097	0.463	n.s.	9422	2.632
12	1.26%	0.775	1.941	0.204	0.569	n.s.	20,291	0.376
13	1.00%	0.681	2.562	0.084	0.197	n.s.	5136	2.256
14	0.62%	0.408	1.491	0.048	0.115	n.s.	3571	18.8
15	0.24%	0.002	0.388	0.807	3.270	n.s.	6113	11.656
16	0.11%	−0.255	1.210	0.425	1.099	n.s.	8335	22.184
17	0.29%	−0.066	0.256	0.419	1.491	n.s.	7385	19.928
18	0.50%	−0.066	0.373	0.637	3.160	n.s.	3783	27.824
19	0.59%	0.004	2.229	0.033	0.719	n.s.	32,786	0.94
20	0.99%	0.217	1.760	−0.170	0.660	n.s.	48,103	0.752