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| OCAMPO-GARCÉS,ADRIÁN; MENA,WILSON; HERNÁNDEZ,FELIPE; CORTÉS,NELSON; PALACIOS,ADRIÁN G. |
| Rest activity pattern was studied in wild-captured males of Octodon degus (n=9), Octodon bridgesi (n=3), and Spalacopus cyanus (n=6) (Rodentia: Octodontidae). Ten-minute resolution actograms were constructed from data obtained by an automated acquisition system. After two months of habituation to a stable light-dark schedule, recordings were performed in isolation chambers under a 12: 12 Light Dark schedule. A free-running period (constant darkness) was recorded for O. bridgesi and S. cyanus. O. degus displayed a crepuscular pattern of rest activity rhythm. Entrained O. bridgesi and S. cyanus displayed nocturnal preference, with rest anticipating light phase and without crepuscular activity bouts. Under constant darkness, active phase occurred at... |
| Tipo: Journal article |
Palavras-chave: Circadian rhythms; Chronotype; Octodon; Octodontids; Spalacopus cyanus. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602006000200003 |
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| VIVALDI,ENNIO A; BASSI,ALEJANDRO; ESTRADA,JORGE; GARRIDO,IGNACIO; DÍAZ,JAVIER; OCAMPO-GARCÉS,ADRIÁN. |
| A computer-based system that automates sleep studies, including sleep deprivation paradigms, is described. The system allows for total or REM-specific sleep deprivation and is based on a reliable, fast-responding, on-line state detection algorithm linked to a dependable intervention device. Behavioral state detection is achieved by dimensión reduction of short-term EEG power spectrum. Interventions are made by serial outputs to servomotors that move a cage with different patterns and variable intensity. The system can adapt itself to individual characteristics and to changes in recording conditions. Customized protocols can be designed by defining the states or stages to be deprived, including scheduling temporal patterns. A detailed analysis of the... |
| Tipo: Journal article |
Palavras-chave: Sleep; Sleep deprivation; Biosignal analysis; Digital control; Automation. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602008000400009 |
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