Abstract
Performance and learning of a spatial water maze was investigated in 120 male C57BL/6J mice of three ages, 30, 150, and 365 days old. Motivation was manipulated by varying the water temperature (12.5, 23–5, 34.5, or 45.5°C). The results indicated that swimming performance was affected significantly by both age and motivation, with older animals requiring longer swimming time to escape at ail temperature levels. Swimming time decreased at extreme water temperatures for all age groups, with the greatest effect evident in the oldest age group. No age differences in learning as measured by errors or days to criterion were found. Extreme water temperatures (12.5 and 45.5°C) improved learning for all age groups.
Get full access to this article
View all access options for this article.
