Figure 2. Enrichment increases exploratory behaviour in an ‘open field’ test in young mice.

Representative traces (red) of (A) non-enriched and (B) enriched P10 mice. Enriched mice typically traverse a much higher proportion of the test arena than non-enriched mice. (C) Percentage of area explored for non-enriched (‘N’, n = 17) and enriched (‘E’, n = 17) P10 mice, as obtained from the traces. The increase in the percentage of the open-field explored by enriched mice is statistically significant (t-test, p = 0.0237). *: p<0.03. (D) Total cumulative distance travelled by non-enriched and enriched mice. There was no detectable difference in absolute distance travelled between the two groups (Student's t-test, p = 0.334).