Compléter Epithalamus A&PVersion en ligne Unit two par Kirsten Storemski 1 humans rhythms epithalamus night body Habenular day circadian puberty gonad eye superior activity nuclei pineal The is to the thalamus . The is involved in emotional and visceral response to orders . The is the of the brain . It is influenced by and length . The pineal body controls , which are the sleep and wake cycles . The pineal body is also involved in the onset of , which would influence in . In mammals , it controls seasonal estrus cycles in many mammals .