Responses of single neurons of the reticular formation were studied in the unanaesthetized immobilized rats. Local cooling of the cortical sensory representation of the stimulated forepaw evoked reversible changes in the responses of most studied units (60 of 86) in different nuclei of the reticular formation. The responses of 25 cells changed only during stimulation of the paw the sensory cortex of which was cooled. The changes of the other unit responses to the same stimulus were more strong (in 13 neurons) or almost equal (in 22 neurons) to the changes in responses to the stimulation of the another paw the sensory projection of which was not cooled. The data suggest that local alteration of the signal transfer in the cortex changes the conditions for the transfer of the same signal in the reticular formation.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Synthesis and Advanced NMR Characterization of Ordered 3D Reticular Materials with PolySilicate Nodes and Hydrophobic OrganoSilicone Linkers.
Molecules
January 2025
Centre for Surface Chemistry and Catalysis-Characterization and Application Team (COK-KAT), KU Leuven, Celestijnenlaan 200F Box 2461, 3001 Heverlee, Belgium.
This work describes the synthesis of ordered 3D siloxane-silsesquioxane reticular materials with silicate D4R cubes (SiO), harvested from a sacrificial tetrabutylammonium cyclosilicate hydrate (TBA-CySH) precursor, interlinked with octyl and dicyclopentyl (Cp) hydrocarbon functionalities in a one-step synthesis with organodichlorosilanes. Advanced solid-state NMR spectroscopy allowed us to unravel the molecular order of the nodes and their interconnection by the silicone linkers. In the case of octyl-methyl silicone linkers, changing the silane-to-silicate ratio in the synthesis allowed for tuning the length of the linker between the nodes.
View Article and Find Full Text PDFThe brainstem reticular formation pivots abnormal neural transmission in the course of Anorexia Nervosa.
J Neural Transm (Vienna)
January 2025
Human Anatomy, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, Pisa, 56100, PI, Italy.
Anorexia nervosa (AN) represents an eating disorder, which features the highest rate of mortality among all psychiatric disorders. The disease prevalence is increasing steadily, and an effective cure is missing. The neurobiology of the disease is largely unknown, and only a few studies were designed to disclose specific brain areas, where altered neural transmission may occur.
View Article and Find Full Text PDFA cortico-subcortical loop for motor control via the pontine reticular formation.
Cell Rep
January 2025
Lendület Thalamus Research Group, HUN-REN Institute of Experimental Medicine, 1083 Budapest, Hungary. Electronic address:
Movement and locomotion are controlled by large neuronal circuits like the cortex-basal ganglia (BG)-thalamus loop. Besides the inhibitory thalamic output, the BG directly control movement via specialized connections with the brainstem. Whether other parallel loops with similar logic exist is presently unclear.
View Article and Find Full Text PDFSingle and combined chronic toxicity of cadmium and titanium dioxide nanoparticles in Aquarana catesbeiana (Anura: Ranidae) tadpoles.
Aquat Toxicol
January 2025
Department of Morphology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil. Electronic address:
The rising production and improper disposal of titanium dioxide nanoparticles (TiO NPs) into aquatic systems present considerable environmental challenges, especially when these particles interact with other contaminants such as cadmium (Cd). Thus, the current study aimed to evaluate the potential toxic effects on the gills, chondrocranium, body growth, and mortality of Aquarana catesbeiana tadpoles. The tadpoles were exposed to environmentally relevant concentrations of TiO NPs (10 µg L), and CdCl (10 µg L), both individually and in combination, for 30 days (chronic exposure), along with a control group.
View Article and Find Full Text PDFMotion-less depth-selective optogenetic probe using tapered fiber and an electrically tuneable liquid crystal steering element.
Biomed Opt Express
January 2025
Center for Optics, Photonics and Lasers, Department of Physics, Engineering Physics and Optics, Université Laval, 2375 Rue de la Terrasse, Québec, Québec G1V 0A6, Canada.
A miniature electrically tuneable liquid crystal component is used to steer light from -1° to +1° and then to inject into a simple tapered fiber. This allows the generation of various propagation modes, their leakage, and selective illumination of the surrounding medium at different depth levels without using mechanical movements nor deformation. The performance of the device is characterized in a reference fluorescence medium (Rhodamine 6G) as well as in a mouse brain (medullary reticular formation and mesencephalic locomotor regions) during in-vivo experiments as a proof of concept.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!