Karen Mosher

TL;DR: The experiments support the conclusion that the amount and/or duration of dark‐time NAT is limited, and are interpreted as supporting the idea that a fixed amount of some substance, an initiator, is synthesized during the subjective day.

TL;DR: Individuals had characteristic patterns in which visible changes in the patterns were observed mainly when time zones were changed because of travel, and throughout the year, wake-up times were close to the time of sunrise, but to-sleep times were several hours past sunset.

TL;DR: Melanophores were studied in tadpoles of the South African clawed toad during the first week after hatching and became punctate in response to a series of melatonin concentrations in their bathing water irrespective of the time of day melatonin was administered.

TL;DR: House sparrows, Passer domesticus, have perch-hopping activity which was elicited by light (direct), and which exhibited daily rhythms that were entrained by environmental light-dark cycles (circadian), which was dependent on photoperiod.

TL;DR: Circadian responses were studied using the perching activity of house sparrows using single or double 4-hr light pulses or the second pulses of the doublets scanned 24 hr to determine phase shifts in response to single light pulses.