Circadian periodicity of brain activity and urinary excretion in the epileptic baboon.


A 24-H rhythm in the proclivity of the baboon Papio papio to exhibit a seizure response to intermittent light stimulation (ILS) has been uncovered. Seizure response to ILS was found to be greatest in the morning at about 0900 h, 2 h after lights on, and least severe in the evening at about 2000 h 1 h after lights off. Urine cortisol and potassium excretion… (More)