Table 7.

Brain activity due to sensory challenges to dynamic balance control.

Name, year	Balance challenge	TM or OG	Modality	Mobile	Spatial information	Brain activity
Clark et al., 2014a	Sensory enhancement (textured insoles or bare feet) in older adults	TM vs. OG	fNIRS	No	Bilateral PFC	Reduction in activation for textured insole and OG conditions
						Decrease in activity in no shoe walking
Clark et al., 2014b	Dim lighting while walking in older adults	OG	fNIRS	No	PFC	Increased activation during preparation and performance phase
Haefeli et al., 2011	Please refer to Table 5

TM, treadmill; OG, overground; PFC, prefrontal cortex.