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	Provedor de dados BJMBR (2) Autor Hoffmann,A. (2) Romero,S.M.B. (2) Palavra-chave Cardiac nerve (2) Heart rate (2) Megalobulimus mogianensis (2) Snail (2) Aversive stimulus (1) Innocuous stimulus (1) Mais... Tipo do documento Info:eu-repo/semantics/other (2) Ano 2008 (1) 2006 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Role of the cardiac nerve in the effect of a novel innocuous stimulus on the heart rate of Megalobulimus mogianensis BJMBR Romero,S.M.B.; Hoffmann,A.. The effects of a brief jet of water delivered to the anterior portion of body-head on the heart rate of Megalobulimus mogianensis were determined in a group of intact snails (N = 8), previously prepared for electrocardiogram recording. The heart rate was significantly increased following stimulation. Nevertheless, with repetition of the stimulus there was a significant decrease in the magnitude of the heart rate variation and in the time for the basal heart rate to recover (first stimulus, 7.4 ± 1.2 bpm and 15.5 ± 1.8 min; second stimulus, 4.8 ± 1.0 bpm and 10.6 ± 1.5 min; third stimulus, 5.0 ± 0.3 bpm and 11.1 ± 1.8 min), indicating that this behavioral response undergoes early habituation. To determine the role of the cardiac nerve in mediating the heart... Tipo: Info:eu-repo/semantics/other Palavras-chave: Innocuous stimulus; Cardiac nerve; Heart rate; Snail; Megalobulimus mogianensis. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000600018 Role of the cardiac nerve in the adaptive changes of heart rate in response to an aversive stimulus in Megalobulimus mogianensis BJMBR Romero,S.M.B.; Hoffmann,A.. The effect of an aversive stimulus represented by contact with a hot plate on the heart rate of Megalobulimus mogianensis was evaluated with electrocardiogram recording in intact snails (N = 8). All stimulated animals showed an increase in heart rate, with mean values ranging from 35.6 ± 1.2 (basal heart rate) to 43.8 ± 0.9 bpm (post-stimulation heart rate). The cardioacceleration was followed by gradual recovery of the basal heart rate, with mean recovery times varying from 4.3 ± 0.3 to 5.8 ± 0.6 min. Repetition of the stimulus did not affect the magnitude of variation nor did it influence the basal heart rate recovery time. To investigate the role of the cardiac nerve in mediating the heart rate alterations induced by the aversive stimulus, denervated (N... Tipo: Info:eu-repo/semantics/other Palavras-chave: Aversive stimulus; Cardiac nerve; Heart rate; Snail; Megalobulimus mogianensis. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000500013 Registros recuperados: 2 Primeira ... 1 ... Última

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