Psychological behaviors are influenced from the circadian timing system. on emotionality. In aged (14-18 weeks of age) male Siberian hamsters circadian arrhythmia improved behavioral despair and decreased sociable motivation but decreased exploratory panic. These effects were not evident in more youthful (5-9 weeks of age) hamsters. Sociable housing (3-5 hamsters/cage) abolished the effects of circadian… Continue reading Psychological behaviors are influenced from the circadian timing system. on emotionality.