Topic: constant darkness

Diurnal animals with monophasic sleep patterns exhibit species-specific cycles of slow-wave sleep (SWS) alternating with rapid eye movement sleep (REMS). A recent study revealed that in the diurnal reptile Pogona vitticeps, SWS and REMS regularly alternate with approximately 2-min cycles throughout the night, generating more than 300 SWS/REMS cycles. Although the cycle varies significantly across species, common neural mechanisms may be involved. However, the precise mechanisms responsible for maintaining these regular cycles remain elusive. Sleep-wake patterns are predominantly regulated by t