Radial maze performance in young and aged grey mouse lemurs
Picq, Jean Luc
Primates 34(2): 223-226
ISSN/ISBN: 0032-8332 DOI: 10.1007/bf02381394
Young and aged grey mouse lemurs have been tested in an eight-arm radial maze out of which four arms were blind. An access to a nesting box was only feasible from the far end of the fourth arm, free to visit (= positive reinforcement). Both age groups memorized the position of the blind arms with an equal efficiency and learned very quickly to avoid them. However, repeated visits to the free arms already explored during the trial were noticed with the aged grey mouse lemurs, while the young group returned much less. These results corroborate the theory that age would preferably deteriorate working memory and less the reference memory.