Effects of hormones on the electrical activity of the brain in the rat and rabbit |
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| Authors: | C Beyer V D Ramirez D I Whitmoyer C H Sawyer |
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| Affiliation: | 1. Department of Anatomy, University of California School of Medicine, Los Angeles, California 90024 USA;2. Brain Research Institute, University of California School of Medicine, Los Angeles, California 90024 USA;1. University Hospitals of Leuven, Belgium;2. Eye Clinic OAMM Maasmechelen, Ziekenhuis Oost-Limburg (Hospital South-Limburg), Belgium;1. Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China;2. Longgang ENT Hospital & Shenzhen ENT Institute, Shenzhen, China;3. Department of Otolaryngology, Head & Neck Surgery, First Hospital of Guangzhou Medical University, Guangzhou, China;4. Brain-Body Institute, McMaster University, Hamilton, Ontario, Canada;5. Department of Pediatric Otolaryngology, Southern Medical University Shenzhen Hospital, Shenzhen, China;6. Department of Respirology, Third Affiliated Hospital of Shenzhen University, Shenzhen, China;1. Epidemiology & Surveillance Branch, Division for Heart Disease and Stroke Prevention, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA;2. IHRC, Inc., Atlanta, GA 30346, USA;1. GEPSI–PSE Group, CIEPQPF, Department of Chemical Engineering, University of Coimbra, Pólo II, R. Sílvio Lima, 3030-790 Coimbra, Portugal;2. Department of Chemical and Biological Engineering, ISEC, Polytechnic Institute of Coimbra, R. Pedro Nunes, 3030-199 Coimbra, Portugal;3. Department of Biostatistics, Fielding School of Public Health, UCLA, 10833 Le Conte Ave., Los Angeles, CA 90095-1772, USA;4. Department of Statistics, London School of Economics, London WC2A 2AE, United Kingdom;1. Section of Psychiatry, Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Italy;2. Psychiatry Unit, Department of Medical Sciences, University of Foggia, Italy;3. Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Italy;4. Internal Medicine Unit, Department of Medical Sciences, University of Foggia, Italy;1. Division of Rheumatology, La Colletta Hospital, Azienda Sanitaria Locale 3, Via del Giappone 3, Arenzano, Genoa 16011, Italy;2. Autoimmunology Laboratory, Department of Internal Medicine, University of Genoa, Viale Benedetto XV 6, Genoa 16132, Italy;3. Rheumatology service, South Tyrolean Health Trust, Hospital of Bruneck, Spitalstraße 11, 39031 Bruneck, Italy;4. Department of Rheumatology, Medical University Graz, Auenbruggerplatz 15-19, Graz 8036, Austria;5. Department of Rheumatology and Clinical Immunology, Charité University Medicine Berlin (CCM), Charitéplatz 1, Berlin 10117, Germany;6. Division of Rheumatology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA;7. Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, MN 55905, USA;8. Department of Rheumatology, Immunology and Allergy, Christchurch Hospital, PB 4710, Christchurch 8140, New Zealand |
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| Abstract: | ![]()
A study has been made of the effects of various hormones on the electrical activity (EEG and background activity) of the brain in the rat and rabbit. In the rat under weak urethane or ether anesthesia the intravenous injection of vasopressin, epinephrine or progesterone induced EEG synchronization and a concomitant decrease in diencephalic background activity. These electrical changes were invariably associated with a rise in blood pressure and were probably the result of activation of baroceptors. In rabbits under urethane, injections of these hormones also elevated the blood pressure but in this species the rise was associated with EEG activation and an increase in background activity. These effects were apparently due to direct excitation of the reticular activating system by the sudden rise in blood pressure. |
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