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. Author manuscript; available in PMC: 2012 Jun 19.
Published in final edited form as: Neuron. 2010 Jul 15;67(1):116–128. doi: 10.1016/j.neuron.2010.05.030

Figure 8. Intrahippocampal Injection of Hyaluronidase Impairs Contextual Fear Conditioning in Mice.

Figure 8

(A) Scheme of experiments with intrahippocampal injections of Hyase or vehicle. B denotes baseline; S denotes time interval between unconditioned stimuli; d1 denotes memory retention test on posttraining day 1.

(B) Mean + SEM of freezing time before, during, and after fear conditioning for experimental groups shown in (A). ***p < 0.001, unpaired t test, significant differences in freezing between vehicle and Hyase-injected mice on posttraining day 1. Numbers of tested mice, N, are indicated in parentheses. See also Figure S7.