[The ability to extrapolate the direction of movement in mice selected for large and small brain weight: the influence of environmental enrichment].

Female mice from the strains selected for large and small brain weight (LB, SB) were kept either in "enriched" or in standard laboratory environment for 3 months. At the end of this period they were tested in the open field and for the ability to extrapolate the direction of the food stimulus movement. Scores of the LB mice kept in the "enriched" environment were significantly higher in the extrapolation test as compared to the LB mice kept in the standard environment as well as to the SB mice of both groups.