Abstract
AbstractThe brains of rats, almost a year old, were found to be similarly susceptible to the influences of differential housing as had been those of weanling rats. In 3 experiments, male S1 rats, about 285 days of age, remained for 30, 60, or 90 days in enriched (EC), impoverished (IC), or standard colony (SC) conditions before sacrifice for measures of weights and enzymatic activities of standardized brain sections. Occipital and total cortical brain weights increased significantly after EC, whereas subcortical regions seemed to be resistant to environmental influences. Year‐old rats responded with greater cortical weight increases and enhanced occipital cholinesterase activities from a period of enrichment extended beyond 60 days than SC agemates. The cortices of IC rats, in contrast, showed a decline in weights with longer duration in isolation. Environmental enrichment, furthermore, disposed year‐old rats to faster learning in the Lashley III maze.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
