The Radial Arm Maze (RAM) for the Evaluation of Working and Reference Memory Deficits in the Diurnal Rodent Octodon degus

Abstract

Spatial memory is highly relevant in biology because it is related with both individual and species survival. Among behavioural tests, one of the most suitable devices for measuring spatial learning and memory is the radial arm maze (RAM) [1,2]. Briefly, RAM consists of eight horizontal arms (57x11 cm) placed radially around a central platform above the floor. Automated doors (20 cm high) are located at the entrance of each arm (Fig. 1). Experimental subjects are placed on a central platform from which they have to collect hidden baits placed at the end of the arms.