The dorsal mesencephalic tegmentum of the carp was explored for respiratory rhythmic neurons. The properties of two types of neurons which could be distinguished on the grounds of their firing pattern and their behaviour during paralysis and electrical stimulation were analysed. One group is involved in the control of a special type of respiration called bout-respiration and besides influences the frequency of the respiratory rhythm. The other group can modulate the output of the motor neurons of the cranial respiratory muscles via a multiple central route. HRP injections revealed extensive connections between these tegmental respiratory neurons and the respiratory centres in the medulla oblongata.
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http://dx.doi.org/10.1016/0034-5687(83)90104-4 | DOI Listing |
Am J Respir Crit Care Med
January 2025
National and Kapodistrian University of Athens, Athens, Greece;
Am J Respir Crit Care Med
January 2025
Shanghai Jiao Tong University Medical School Affiliated Ruijin Hospital, Respiratory and Critical Care Medicine, Shanghai, China;
N Z Med J
January 2025
Associate Professor, University of Otago, Christchurch.
Aim: Electronic cigarette use (vaping) has increased rapidly among adolescents globally. Most electronic cigarettes (e-cigarettes) contain nicotine, which is addictive and can cause behaviour problems and mood dysregulation. We sought to assess whether an educational intervention increased knowledge about vaping-related health risks and desire to quit among high school students.
View Article and Find Full Text PDFInvest Radiol
January 2025
From the Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany (A. Schwarz, A. Simon, A.M.); Siemens Healthineers AG, Forchheim, Germany (A. Schwarz, C.H., J.D., A. Simon); Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany (F.K.W., S.G., M.S.); and Institut for Radiology, Pediatric and Neuroradiology, Helios Hospital, Schwerin, Germany (H.-J.R.).
Objective: Respiratory motion can affect image quality and thus affect the diagnostic accuracy of CT images by masking or mimicking relevant lung pathologies. CT examinations are often performed during deep inspiration and breath-hold to achieve optimal image quality. However, this can be challenging for certain patient groups, such as children, the elderly, or sedated patients.
View Article and Find Full Text PDFAm J Respir Crit Care Med
January 2025
Assistance Publique - Hopitaux de Paris, Department of Respiratory and Intensive Care Medicine, Paris, Île-de-France, France.
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