Premotor and Posterior Parietal Cortex Activity is Increased for Slow, as well as Fast Walking Poststroke: An fNIRS Study

Table 3

Pearson’s correlation results for Aim 3 with comparisons to between brain activation changes, gait speed modulation, and impairment.

Region of interest		Gait speed modulation				Impairment (Fugl-Meyer lower extremity)
		NORM minus SLOW		FAST minus NORM		NORM minus SLOW		FAST minus NORM
		r	p	r	p	r	p	r	p
Contralesional hemisphere	PFC	−0.222	0.360	0.402	0.079	0.009	0.969	0.323	0.165
	PMC	−0.326	0.173	−0.183	0.439	−0.006	0.981	−0.155	0.513
	SMC	−0.234	0.350	0.237	0.330	0.388	0.101	0.375	0.114
	PPC	−0.295	0.234	0.353	0.138	0.208	0.394	0.235	0.332
Ipsilesional hemisphere	PFC	−0.282	0.241	0.598	0.005	0.172	0.469	0.503	0.024
	PMC	−0.310	0.197	0.204	0.387	−0.118	0.620	0.250	0.287
	SMC	−0.104	0.682	0.201	0.410	−0.025	0.919	0.249	0.303
	PPC	−0.382	0.117	0.137	0.576	0.186	0.446	0.242	0.318

Note: Change in brain activation and gait speed modulations were calculated as a change from the SLOW to NORM condition and change from the NORM to FAST condition. Italic p-values indicate significant relationships with an alpha of 0.05. Indicates significant relationships after Benjamini–Hochberg correction for multiple comparisons (using a false discovery rate of 5%). PFC = prefrontal cortex; PMC = premotor cortex; SMC = sensorimotor cortex; PPC = posterior parietal cortex.