Maze exploration in the rat under different levels of illumination

Male hooded rats were tested in an enclosed symmetrical Y-maze, constructed entirely of clear Perspex, for 3 min on each of four successive days, and defaecation scores were higher for group W on all trials than for group R.

Abstract

Abstract Male hooded rats were tested in an enclosed symmetrical Y-maze, constructed entirely of clear Perspex, for 3 min on each of four successive days. The maze was illuminated by either a 15-W red bulb (group R) or a 150-W white bulb (group W). Section entry scores were similar for both groups on day 1; there was a marked decline on subsequent days for group W but not for group R. Defaecation scores were higher for group W on all trials. The results are discussed in relation to comparisons of behaviour in elevated and enclosed mazes.