Cyclic alternation of quiet and active sleep states in the octopus

Medeiros, Sylvia Lima de Souza; Paiva, Mizziara Marlen Matias de; Lopes, Paulo Henrique; Blanco, Wilfredo; Lima, Françoise Dantas de; Oliveira, Jaime Bruno Cirne de; Medeiros, Inácio Gomes; Sequerra, Eduardo Bouth; Souza, Sandro José de; Leite, Tatiana Silva; Ribeiro, Sidarta Tollendal Gomes

Cyclic alternation of quiet and active sleep states in the octopus

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dc.contributor.author	Medeiros, Sylvia Lima de Souza
dc.contributor.author	Paiva, Mizziara Marlen Matias de
dc.contributor.author	Lopes, Paulo Henrique
dc.contributor.author	Blanco, Wilfredo
dc.contributor.author	Lima, Françoise Dantas de
dc.contributor.author	Oliveira, Jaime Bruno Cirne de
dc.contributor.author	Medeiros, Inácio Gomes
dc.contributor.author	Sequerra, Eduardo Bouth
dc.contributor.author	Souza, Sandro José de
dc.contributor.author	Leite, Tatiana Silva
dc.contributor.author	Ribeiro, Sidarta Tollendal Gomes
dc.date.accessioned	2021-03-29T17:13:37Z
dc.date.available	2021-03-29T17:13:37Z
dc.date.issued	2021-03-25
dc.description.resumo	Previous observations suggest the existence of ‘Active sleep’ in cephalopods. To investigate in detail the behavioral structure of cephalopod sleep, we video-recorded four adult specimens of Octopus insularis and quantified their distinct states and transitions. Changes in skin color and texture and movements of eyes and mantle were assessed using automated image processing tools, and arousal threshold was measured using sensory stimulation. Two distinct states unresponsive to stimulation occurred in tandem. The first was a ‘Quiet sleep’ state with uniformly pale skin, closed pupils, and long episode durations (median 415.2 s). The second was an ‘Active sleep’ state with dynamic skin patterns of color and texture, rapid eye movements, and short episode durations (median 40.8 s). ‘Active sleep’ was periodic (60% of recurrences between 26 and 39 min) and occurred mostly after ‘Quiet sleep’ (82% of transitions). These results suggest that cephalopods have an ultradian sleep cycle analogous to that of amniotes	pt_BR
dc.identifier.citation	MEDEIROS, Sylvia Lima de Souza; PAIVA, Mizziara Marlen Matias de; LOPES, Paulo Henrique; BLANCO, Wilfredo; LIMA, Françoise Dantas de; OLIVEIRA, Jaime Bruno Cirne de; MEDEIROS, Inácio Gomes; SEQUERRA, Eduardo Bouth; SOUZA, Sandro de; LEITE, Tatiana Silva. Cyclic alternation of quiet and active sleep states in the octopus. Iscience, [S.L.], p. 102223, mar. 2021. doi: http://dx.doi.org/10.1016/j.isci.2021.102223.	pt_BR
dc.identifier.doi	10.1016/j.isci.2021.102223
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/32013
dc.language	en	pt_BR
dc.publisher	Elsevier BV	pt_BR
dc.rights	Attribution-NonCommercial-ShareAlike 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-sa/3.0/br/	*
dc.subject	Splee state	pt_BR
dc.subject	Octopus insularis	pt_BR
dc.subject	Ethology	pt_BR
dc.subject	Zoology	pt_BR
dc.subject	Biological	pt_BR
dc.title	Cyclic alternation of quiet and active sleep states in the octopus	pt_BR
dc.type	article	pt_BR