Acquisition of the repeated acquisition task in the Morris water tank by four rat strains. The mean platform escape latencies (s; panels a-d) and the distance traveled to reach the platform (cm; panels e-h) are depicted per strain as means and standard errors of the means (SEMs) of the odd and the even trials per session. The platform was situated in quadrant East, South, West, North, East in the five successive training sessions.
van der Staay et al. Behavioral and Brain Functions 2009 5:50 doi:10.1186/1744-9081-5-50