Age and arousal in the rat
The influence of illumination level on locomotor activity and reaction times of three age groups (25, 90, and 180 days old) of rats was studied. Age-related differences were obtained, and consistent effects on the two behavioral measures were obtained for the individual animals. © 1983, The psychonomic Society, Inc.. All rights reserved.
Delay, Eugene R. and Isaac, Walter, "Age and arousal in the rat" (1983). Regis University Faculty Publications (comprehensive list). 1318.