Sex differences in object location memory and spatial navigation in Long-Evans rats
- 12 June 2007
- journal article
- Published by Springer Science and Business Media LLC in Animal Cognition
- Vol. 11 (1), 129-137
- https://doi.org/10.1007/s10071-007-0096-1
Abstract
In both humans and rodents, males typically excel on a number of tasks requiring spatial ability. However, human females exhibit advantages in memory for the spatial location of objects. This study investigated whether rats would exhibit similar sex differences on a task of object location memory (OLM) and on the watermaze (WM). We predicted that females should outperform males on the OLM task and that males should outperform females on the WM. To control for possible effects of housing environment, rats were housed in either complex environments or in standard shoebox housing. Eighty Long-Evans rats (40 males and 40 females) were housed in either complex (Complex rats) or standard shoebox housing (Control rats). Results indicated that males had superior performance on the WM, whereas females outperformed males on the OLM task, regardless of housing environment. As these sex differences cannot be easily attributed to differences in cognitive style related to linguistic processing of environmental features or to selection pressures related to the hunting gathering evolutionary prehistory of humans, these data suggest that sex differences in spatial ability may be related to traits selected for by polygynous mating strategies.Keywords
This publication has 35 references indexed in Scilit:
- Analysis of spatial orientation strategies of male and female Wistar rats in a Morris water escape taskBehavioural Brain Research, 2006
- Effects of social and physical enrichment on open field activity differ in male and female Sprague–Dawley ratsBehavioural Brain Research, 2005
- Detailed analysis of the behavior of Lister and Wistar rats in anxiety, object recognition and object location tasksBehavioural Brain Research, 2005
- Contribution of sex differences in the acute stress response to sex differences in water maze performance in the ratBehavioural Brain Research, 2004
- Have sex differences in spatial ability evolved from male competition for mating and female concern for survival?Cognition, 2004
- Integrated Memory for Object, Place, and Context in Rats: A Possible Model of Episodic-Like Memory?Journal of Neuroscience, 2004
- Sex differences in behavioral and neurochemical profiles after chronic stress: Role of housing conditionsPhysiology & Behavior, 2002
- Extending the spontaneous preference test of recognition: evidence of object-location and object-context recognitionBehavioural Brain Research, 1999
- Sex differences in learning and memory in mice: Effects of sequence of testing and cholinergic blockade.Behavioral Neuroscience, 1995
- Polypropylene pellets as an inexpensive reusable substitute for milk in the Morris milk mazeJournal of Neuroscience Methods, 1993