Nimodipine ameliorates aging-related changes in open-field behaviors of the rabbit

Richard A. Deyo*, Karen T. Straube, James R. Moyer, John F. Disterhoft

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


The open-field behavior of old rabbits (32-50 months) was compared to that of young-controls (3 months). Old rabbits engaged in less grooming and rearing behaviors and were more active than young controls. The old rabbits demonstrated a pattern of ambulation which did not indicate a preference for any particular area of the open-field. In contrast, young rabbits exhibited a very stereotypic pattern of exploration in the open-field, engaging in relatively low levels of ambulation confined to the area near the sides of the open-field. Old rabbits fed a diet which included 860 ppm nimodipine showed behaviors in the open-field which closely approximated those of the young-controls. Nimodipine-treated rabbits made fewer crossings and more rears and grooms than the old controls. These results indicate that very specific aging-related changes occur in the open-field behaviors of rabbits, and that nimodipine effectively reverses these aging-associated changes. These data are consistent with previous studies that have shown improvements in open-field behaviors by old rats receiving nimodipine.

Original languageEnglish (US)
Pages (from-to)169-175
Number of pages7
JournalExperimental Aging Research
Issue number4
StatePublished - 1989

ASJC Scopus subject areas

  • Aging
  • Arts and Humanities (miscellaneous)
  • Psychology(all)
  • Geriatrics and Gerontology


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