Table 1

Statistical comparison between the clk-mov curves of the hand and foot.

segment
 coupled with
 coupling main effect
 frequency main effect
 interaction
isodirectional association
 hand unloaded
 alone




foot unloaded
 F(2,18) = 0.32
 F(8,72) = 1.25
 F(16,144) = 1.20


foot loaded
 p = 0.732
 p = 0.284
 p = 0.274


foot unloaded
 alone




hand unloaded
 F(2,18) = 1.80
 F(8,72) = 1.98
 F(16,144) = 1.19


hand loaded
 p = 0.194
 p = 0.060
 p = 0.278


hand loaded
 alone
 F(1,9) = 1.61
 F(8,72) = 3.02
 F(8,72) = 1.02


foot unloaded
 p = 0.236
 p < 0.0055*
 p = 0.426



foot loaded
 alone
 F(1,9) = 2.66
 F(8,72) = 7.13
 F(8,72) = 0.49


hand unloaded
 p = 0.137
 p < 0.000001*
 p = 0.856
antidirectional association
 hand unloaded
 alone




foot unloaded
 F(2,18) = 0.16
 F(5,45) = 1.94
 F(10,90) = 0.68


foot loaded
 p = 0.854
 p = 0.105
 p = 0.739


foot unloaded
 alone




hand unloaded
 F(2,18) = 2.17
 F(5,45) = 1.04
 F(10,90) = 0.96


hand loaded
 p = 0.143
 p = 0.406
 p = 0.481


hand loaded
 alone
 F(1,9) = 1.71
 F(5,45) = 11.03
 F(5,45) = 1.06


foot unloaded
 p = 0.224
 p = 0.000001*
 p = 0.394


foot loaded
 alone
 F(1,9) = 1.93
 F(5,45) = 8.06
 F(5,45) = 1.33


hand unloaded
 p = 0.198
 p = 0.00002*
 p = 0.270

Two-way repeated measures ANOVA, 2 or 3 coupling modalities × 9 frequencies. Direction of movement association is indicated in col.1, moving segment in col.2 and coupling modality in col.3. Significant effects marked by asterisk. In all the configurations examined, the ANOVA test failed to reveal any significant effect of coupling on the clk-mov curves. The p values were very high in two configurations and much lower (0.137 <p < 0.236) in the others. It is worth noting, however, that in all the latter cases, the effect of coupling, even if not significant, was opposite to that expected, i.e. the lagging segment was phase-delayed or the leading segment was phase-advanced.

Baldissera et al. BMC Neuroscience 2006 7:70   doi:10.1186/1471-2202-7-70