Table 5.

Challenging beam performance of chronic aged (6–10 months old) MPD^a.

	Aged chronic control (N = 25)	Aged chronic MPD (N = 31)	P value
Average number of slips	5.1 ± 0.3	6.8 ± 0.5	0.008
Average latency (sec)	7.8 ± 0.9	13.5 ± 1.3	0.001

^aSee legends under Table 3 for animal treatment protocols.