title: Brain and behavioural evidence for rest-activity cycles in Octopus vulgaris.
abstract: Octopus vulgaris maintained under a 12/12h light/dark cycle exhibit a pronounced nocturnal activity pattern. Animals deprived of rest during the light period show a marked 'rebound' in activity in the following 24h. 'Active' octopuses attack faster than 'quiet' animals and brain activity recorded electrically intensifies during 'quiet' behaviour. Thus, in Octopus as in vertebrates, brain areas involved in memory or 'higher' processes exhibit 'off-line' activity during rest periods.
authors.affiliation: Neurobiology Laboratory, Stazione Zoologica "Anton Dohrn", Naples, Italy. brown@szn.it
authors.forename: Euan R
authors.initials: ER
authors.lastname: Brown
authors.forename: Stefania
authors.initials: S
authors.lastname: Piscopo
authors.forename: Rosanna
authors.initials: R
authors.lastname: De Stefano
authors.forename: Antonio
authors.initials: A
authors.lastname: Giuditta
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D001921:Brain / Q000502:physiology; D002940:Circadian Rhythm / Q000502:physiology*; D004594:Electrophysiology; D049831:Octopodiformes / Q000502:physiology*; D010507:Periodicity; D012890:Sleep / Q000502:physiology*; D014851:Wakefulness / Q000502:physiology*