Research Article

Involvement of Cholinergic Dysfunction and Oxidative Damage in the Effects of Simulated Weightlessness on Learning and Memory in Rats

Figure 4

Effects of HU (hindlimb unloading) on cognitive function of rats in the shuttle box test. (a)–(d) Number of active avoidance instances on each training day for 7 d-groups, 14 d-groups, 21 d-groups, and 28 d-groups, respectively. (e) Average number of active avoidance instances in each group. (f) Average time spent in electric area in each group. Values represent mean ± SEM. and , compared with time-matched control.
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