Cardiorespiratory and electroencephalographic responses to stimulation of the mesencephalic tegmentum in toads, lizards, and rats
Rectangular pulses delivered to the mesencephalic tegmentum were used as central step-like stimuli, and their effects on blood pressure, heart and respiratory rates, and brain waves were tested in toads, lizards, and rats under urethane anesthesia. The delay response was much shorter and the rate of...
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1977
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00144886_v57_n2_p364_Segura http://hdl.handle.net/20.500.12110/paper_00144886_v57_n2_p364_Segura |
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paper:paper_00144886_v57_n2_p364_Segura2023-06-08T14:37:22Z Cardiorespiratory and electroencephalographic responses to stimulation of the mesencephalic tegmentum in toads, lizards, and rats autonomic nervous system blood pressure brain depth electrode breathing electrocardiography electroencephalography heart rate mesencephalon rat reptile reticular formation tegmentum theoretical study Animal Blood Pressure Bufo arenarum Comparative Study Electric Stimulation Heart Heart Rate Lizards Male Mesencephalon Physiology, Comparative Rats Respiration Rectangular pulses delivered to the mesencephalic tegmentum were used as central step-like stimuli, and their effects on blood pressure, heart and respiratory rates, and brain waves were tested in toads, lizards, and rats under urethane anesthesia. The delay response was much shorter and the rate of change was faster in rats than in toads or lizards. Response duration was longer in toads and lizards than in rats. Long-lasting error and post-stimulus oscillations were observed in toads and lizards but not in rats. Eighty percent of responses in rats, 53.33% in toads, and only 2.22% in lizards showed adaptation to the stimulus. In toads and lizards the whole variables were systematically affected, whereas in rats 42% of responses were discriminative. Tegmental stimulation induced desynchronization in rats, synchronization in lizards, and had no effect in toads. These results suggest that whereas the cardiovascular control in the rat may act as proportional, derivative, or intergrative and in the toad only as proportional, a derivative component becomes apparent in the lizard. © 1977. 1977 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00144886_v57_n2_p364_Segura http://hdl.handle.net/20.500.12110/paper_00144886_v57_n2_p364_Segura |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
autonomic nervous system blood pressure brain depth electrode breathing electrocardiography electroencephalography heart rate mesencephalon rat reptile reticular formation tegmentum theoretical study Animal Blood Pressure Bufo arenarum Comparative Study Electric Stimulation Heart Heart Rate Lizards Male Mesencephalon Physiology, Comparative Rats Respiration |
| spellingShingle |
autonomic nervous system blood pressure brain depth electrode breathing electrocardiography electroencephalography heart rate mesencephalon rat reptile reticular formation tegmentum theoretical study Animal Blood Pressure Bufo arenarum Comparative Study Electric Stimulation Heart Heart Rate Lizards Male Mesencephalon Physiology, Comparative Rats Respiration Cardiorespiratory and electroencephalographic responses to stimulation of the mesencephalic tegmentum in toads, lizards, and rats |
| topic_facet |
autonomic nervous system blood pressure brain depth electrode breathing electrocardiography electroencephalography heart rate mesencephalon rat reptile reticular formation tegmentum theoretical study Animal Blood Pressure Bufo arenarum Comparative Study Electric Stimulation Heart Heart Rate Lizards Male Mesencephalon Physiology, Comparative Rats Respiration |
| description |
Rectangular pulses delivered to the mesencephalic tegmentum were used as central step-like stimuli, and their effects on blood pressure, heart and respiratory rates, and brain waves were tested in toads, lizards, and rats under urethane anesthesia. The delay response was much shorter and the rate of change was faster in rats than in toads or lizards. Response duration was longer in toads and lizards than in rats. Long-lasting error and post-stimulus oscillations were observed in toads and lizards but not in rats. Eighty percent of responses in rats, 53.33% in toads, and only 2.22% in lizards showed adaptation to the stimulus. In toads and lizards the whole variables were systematically affected, whereas in rats 42% of responses were discriminative. Tegmental stimulation induced desynchronization in rats, synchronization in lizards, and had no effect in toads. These results suggest that whereas the cardiovascular control in the rat may act as proportional, derivative, or intergrative and in the toad only as proportional, a derivative component becomes apparent in the lizard. © 1977. |
| title |
Cardiorespiratory and electroencephalographic responses to stimulation of the mesencephalic tegmentum in toads, lizards, and rats |
| title_short |
Cardiorespiratory and electroencephalographic responses to stimulation of the mesencephalic tegmentum in toads, lizards, and rats |
| title_full |
Cardiorespiratory and electroencephalographic responses to stimulation of the mesencephalic tegmentum in toads, lizards, and rats |
| title_fullStr |
Cardiorespiratory and electroencephalographic responses to stimulation of the mesencephalic tegmentum in toads, lizards, and rats |
| title_full_unstemmed |
Cardiorespiratory and electroencephalographic responses to stimulation of the mesencephalic tegmentum in toads, lizards, and rats |
| title_sort |
cardiorespiratory and electroencephalographic responses to stimulation of the mesencephalic tegmentum in toads, lizards, and rats |
| publishDate |
1977 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00144886_v57_n2_p364_Segura http://hdl.handle.net/20.500.12110/paper_00144886_v57_n2_p364_Segura |
| _version_ |
1768544805566021632 |