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Electroencephalogram of Normotensive Individuals During Sitting and Standing Blood Pressure Measurement Positions.
Cureus
October 2024
College of Medicine, University of Illinois, Chicago, USA.
Background Investigating changes in brain electroencephalogram activity during blood pressure measurement in sitting and standing positions is clinically significant for understanding the neural correlates of postural changes, which may affect cerebral perfusion and autonomic regulation. Shifts in blood pressure can influence visual cortical activity, potentially altering cognitive and sensory processing. This research holds clinical relevance in evaluating disorders like orthostatic hypotension and syncope, where postural changes compromise cerebral blood flow.
View Article and Find Full Text PDFChanges Over Time in Masseter Muscle Activity, Symptoms of Discomfort, Stress Level and Salivary Flow Rate Following Intra-Oesophageal Acid Infusion.
J Oral Rehabil
November 2024
Department of Orthodontics and Dentofacial Orthopedics, Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
Background: Intra-oesophageal acid stimulation increases masseter muscle activity. However, the infusion speeds used in previous studies are significantly slow, with minimal acid volume (30 mL over 30 min). Additionally, it is unclear how masseter muscle activity, symptoms of discomfort, stress levels and saliva quantity change over time.
View Article and Find Full Text PDF[Obstructive apnea hypopnea syndrome in pregnancy].
Rev Mal Respir
December 2024
Inserm CIC 1402-Is-Alive, service de pneumologie, CHU de Poitiers, université de Poitiers, 2, rue de la Milétrie, BP 577, 86021 Poitiers, France. Electronic address:
Obstructive sleep apnea hypopnea syndrome (OSA) in pregnant women is an under-diagnosed but common condition, due to the numerous physiological changes favoring upper airway collapse. Risk factors such as significant weight gain during the 1st trimester, maternal age and parity should be systematically investigated. Diagnosis is made by sleep recording.
View Article and Find Full Text PDFComparison of rhythmic jaw muscle activities induced by electrical stimulations of the corticobulbar tract during rapid eye movement sleep with those during wakefulness and non-rapid eye movement sleep in freely moving Guinea pigs.
J Oral Biosci
December 2024
Department of Oral Physiology, Osaka University Graduate School of Dentistry, Osaka, Japan; Sleep Medicine Center Osaka University Hospital, Osaka, Japan. Electronic address:
Article Synopsis
- The study investigates rhythmic jaw muscle activities (RJMAs) in guinea pigs during REM sleep compared to wakefulness and non-REM sleep, focusing on the effects of electrical microstimulations to the corticobulbar tract.
- Results show that RJMAs in the digastric muscle occur during REM sleep but are less pronounced than during wakefulness and non-REM sleep, with no associated cortical or cardiac changes noted during REM.
- The findings indicate that the masticatory central pattern generator (CPG) can be activated during REM sleep, suggesting a complex interaction between muscle activity and the motoneuron inhibitory system.
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