1. In freely moving cats, the cortical desynchronization elicited by painless rhythmic distension, or by low voltage electric stimulation, of the small intestine in drowsiness and slow wave sleep is extinguished following a few repetitions. After extinction of the arousal reaction, similar intestinal stimulation was systematically followed by the appearance of synchronized activity, or an increase of spontaneous synchronization, in the explored cortical areas (parieto-occipital). 2. Intestinal or splanchnic stimulation at an intensity below threshold for cortical desynchronization immediately induced synchronized activity without any need of previous repetitions of stimulation. 3. Stimuli which were followed by synchronization excited only the large (Abeta) splanchnic afferents. The authors conclude that intestinal receptors may be one of the sources of synchronizing influence which can contribute to the regulation of the sleep-wakefulness cycle and that the large splanchnic afferents may play a role in the induction of synchronization.
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Parasitol Res
January 2025
Applied Zoology and Animal Conservation Group, University of the Balearic Islands (ZAP-UIB), Palma, Spain.
Biting midges of genus Leptoconops Skuse 1889 are small blood-feeding insects recognized as highly irritating diurnal pests in certain regions around the globe. In Europe, their presence is poorly documented, except in France and Italy. Following reports of human discomfort in a tourist area of Menorca, Balearic Islands (Spain), a small-scale study was conducted to identify the biting species and assess their preferred biting sites using a human-landing assay along a habitat gradient in a coastal dune area.
View Article and Find Full Text PDFCan J Psychiatry
January 2025
Temerty Centre for Therapeutic Brain Intervention and Campbell Family Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.
Background: Late-life depression (LLD) is often accompanied by cognitive impairment, which may persist despite antidepressant treatment. Repetitive transcranial magnetic stimulation (rTMS) is an efficacious treatment for depression, with potential benefits on cognitive functioning. However, research on cognitive effects is inconclusive, relatively sparse in LLD, and predominantly focused on group-level cognitive changes.
View Article and Find Full Text PDFJ Neural Eng
January 2025
Weldon School of Biomedical Engineering, Purdue University, 723 W. Michigan St., Indianapolis, Indiana, 46202, UNITED STATES.
Objective: Direct electrical neurostimulation using continuous sinusoidal low frequency alternating currents (LFAC) is an emerging modality for neuromodulation. As opposed to the traditional rectangular pulse stimulation, there is limited background on the characteristics of peripheral nerves responses to sinusoidal LFAC stimulation; especially within the low frequency range (<50Hz). In this study, we demonstrate LFAC activation as a means to activate motor nerves by direct bipolar nerve stimulation via cuff electrodes, and characterize the factors of activation.
View Article and Find Full Text PDFGinekol Pol
January 2025
Department of Clinical Dietetics, Faculty of Health Sciences, Medical University of Warsaw, Poland, Poland.
Anti-Müllerian hormone (AMH), also known as Müller duct inhibitory factor and primarily known for its role in sexual differentiation. In female fetuses, AMH production by granulosa cells begins around the 36th week of gestation and continues in women until menopause. It is becoming more significant in the endocrine and gynecological diagnosis of adult women.
View Article and Find Full Text PDFAnn Indian Acad Neurol
January 2025
Department of Neurology, All India Institute of Medical Sciences, New Delhi, India.
"Tardive syndrome" is an umbrella term for a group of drug-induced movement disorders associated with the prolonged use of mainly dopamine receptor blockers and also other medications. Early recognition followed by gradual withdrawal of the incriminating drug may lead to reversal, although not in all patients. Tardive syndromes are usually mixed movement disorders, with specific phenotypes, which may lead to severe disability.
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