Do bearded dragons dream? Reptiles share sleep patterns with mammals and birds

Brain sleep appeared early in vertebrate evolution. Researchers describe the existence of REM and slow-wave sleep in the Australian dragon, with many common features with mammalian sleep: a phase characterized by low frequency/high amplitude average brain activity and rare and bursty neuronal firing (slow-wave sleep); another characterized by awake-like brain activity and rapid eye movements.
Paleontology News — ScienceDaily

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