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. 2014 Jun 24;8:222. doi: 10.3389/fnbeh.2014.00222

Figure 6.

Figure 6

Cross-correlations under conditions of light (S1), dark (S2) and re-exposure to light (S3). Cross-correlation coefficients were significantly lower in the dark (S2) than those conducted in the light, i.e., S1 and S3 (Friedman ANOVA + post hoc tests; * p < 0.05). No significance was observed between two trial conducted in the light. This suggests that the intra-trial stability of place fields was impaired in the dark due to drifts in place cell firing.