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Behavioral evidence for cone-based ultraviolet vision in divergent bat species and implications for its evolution Rev. Bras. Zool.
Fujun,Xuan; Kailiang,Hu; Tengteng,Zhu; Paul,Racey; Xuzhong,Wang; Yi,Sun.
We investigated the reactions of four bat species from four different lineages to UV light: Hipposideros armiger (Hodgson, 1835) and Scotophilus kuhlii Leach, 1821, which use constant frequency (CF) or frequency modulation (FM) echolocation, respectively; and Rousettus leschenaultii (Desmarest, 1820) and Cynopterus sphinx (Vahl, 1797), cave and tree-roosting Old World fruit bats, respectively. Following acclimation and training involving aversive stimuli when exposed to UV light, individuals of S. kuhlii and C. sphinx exposed to such stimuli displayed conditioned reflexes such as body crouching, wing retracting, horizontal crawling, flying and/or vocalization, whereas individuals of H. armiger and R. leschenaultii, in most cue-testing sessions, remained...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chiroptera; Evolution; Fear conditioning; UV vision.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000200002
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Flavones from Erythrina falcata are modulators of fear memory. Repositório Alice
OLIVEIRA, D. R. de; ZAMBERLAM, C. R.; GAIARDO, R. B.; REGO, G. M.; CERUTTI, J. M.; CAVALHEIRO, A. J.; CERUTTI, S. M..
Background: Flavonoids, which have been identified in a variety of plants, have been demonstrated to elicit beneficial effects on memory. Some studies have reported that flavonoids derived from Erythrina plants can provide such beneficial effects on memory. The aim of this study was to identify the flavonoids present in the stem bark crude extract of Erythrina falcata (CE) and to perform a bioactivity-guided study on conditioned fear memory. Methods: The secondary metabolites of CE were identified by high performance liquid chromatography combined with a diode array detector, electrospray ionization tandem mass spectrometry (HPLC-DAD-ESI/MSn) and nuclear magnetic resonance (NMR). The buthanolic fraction (BuF) was obtained by partitioning. Subfractions from...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Erythrina falcata; Flavona; Uso terapêutico; Memória; Medo condicionado; Flavone; Acquisition; Extinction; Fear conditioning.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/999163
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Induction of Zenk protein expression within the nucleus taeniae of the amygdala of pigeons following tone and shock stimulation BJMBR
Brito,I.; Britto,L.R.G.; Ferrari,E.A.M..
In this study, we evaluated the expression of the Zenk protein within the nucleus taeniae of the pigeon’s amygdala (TnA) after training in a classical aversive conditioning, in order to improve our understanding of its functional role in birds. Thirty-two 18-month-old adult male pigeons (Columba livia), weighing on average 350 g, were trained under different conditions: with tone-shock associations (experimental group; EG); with shock-alone presentations (shock group; SG); with tone-alone presentations (tone group; TG); with exposure to the training chamber without stimulation (context group; CG), and with daily handling (naive group; NG). The number of immunoreactive nuclei was counted in the whole TnA region and is reported as density of Zenk-positive...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Amygdala; Nucleus taeniae of the amygdala; Fear conditioning; Zenk; Pigeon.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000800005
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The 'whole-animal approach' as a heuristic principle in neuroscience research Biol. Res.
SERANI-MERLO,ALEJANDRO; PAZ,RODRIGO; CASTILLO,ANDRÉS.
Neuroscience embraces a heterogeneous group of disciplines. A conceptual framework that allows a better articulation of these different theoretical and experimental perspectives is needed. A `whole-animal approach' is proposed as a theoretical and hermeneutic tool. To illustrate the potential of this point of view, an overview of the research that has been performed in the extinction of fear-conditioned responses from Pavlov to the present is discussed. This is an example of how a whole-animal-based approach may help to organize and integrate basic and clinical neuroscience research. Our proposal is in agreement with recent statements calling for more integrative approaches in biological and neuropsychiatric research
Tipo: Journal article Palavras-chave: Epistemology; Neurophilosophy; Fear conditioning; Extinction; Reductionism.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000400008
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