Age-related changes in the organization of spontaneously occurring behaviors
Author ORCID Identifier
Jenna Osterlund Oltmanns: https://orcid.org/0000-0003-4461-6205
Ericka A. Schaeffer: https://orcid.org/0000-0002-7006-0178
R. I. Lake: https://orcid.org/0000-0002-0245-1636
Rachel Einhaus: https://orcid.org/0000-0003-4379-0762
Age-related changes in spatial and temporal processing have been documented across a range of species. Rodent studies typically investigate differences in performance between adult and senescent animals; however, progressive loss of neurons in the hippocampus and cortex has been observed to occur as early as after adolescence. Therefore, the current study evaluated the effects of age in three- and ten-month-old female rats on the organization of movement in open field and food protection behaviors, two tasks that have previously dissociated hippocampal and cortical pathology. Age-related differences were observed in general measures of locomotion, spatial orientation, and attentional processing. The results of the current study are consistent with age-related changes in the processing of spatial information and motivation that occur earlier in life than previously anticipated. These observations establish a foundation for future studies evaluating interventions that influence these age-related differences in performance.
Exploration, Food protection, Movement kinematics, Open field, Rats, Senescence
Osterlund Oltmanns, Jenna R.; Schaeffer, Ericka A.; Blackwell, A. A.; Lake, R. I.; Einhaus, R. M.; Kartje, G. L.; and Wallace, Douglas G., "Age-related changes in the organization of spontaneously occurring behaviors" (2022). NIU Bibliography. 59.
Department of Psychology