This Mini-Review is based on the following article: Meijs S, Andreis FR, Janjua TAM, Graven-Nielsen T, Jensen W. High-frequency electrical stimulation increases cortical excitability and mechanical sensitivity in a chronic large animal model. . August 13, 2024. doi: 10.1097/j.pain.0000000000003354. High-frequency electrical stimulation (HFS) of C-fiber nociceptors induces long-term potentiation (LTP) at the first spinal synapse. This spinal LTP is believed to play a role in the amplification of pain. However, the effects of HFS are probably not restricted to the spinal cord. This study by Meijs et al. (2024) showed that HFS increases cortical responses to noxious stimuli in a porcine model. Are these increased cortical responses a correlate of spinal LTP and do we observe the same in humans?
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Sensors (Basel)
January 2025
Facultad de Ingeniería, Universidad Autónoma de Baja California, Mexicali 21280, Mexico.
Lock-in amplifiers (LIAs) are critical tools in precision measurement, particularly for applications involving weak signals obscured by noise. Advances in signal processing algorithms and hardware synthesis have enabled accurate signal extraction, even in extremely noisy environments, making LIAs indispensable in sensor applications for healthcare, industry, and other services. For instance, the electrical impedance measurement of the human body, organs, tissues, and cells, known as bioelectrical impedance, is commonly used in biomedical and healthcare applications because it is non-invasive and relatively inexpensive.
View Article and Find Full Text PDFSensors (Basel)
January 2025
Department of Electrical and Electronic Engineering, The University of Manchester, Manchester M13 9PL, UK.
In radio frequency identification (RFID), differences in spectrum policies and tag misreading in different countries are the two main issues that limit its application. To solve these problems, this article proposes a composite right/left-handed transmission line (CRLH-TL)-based reconfigurable antenna for ultra-high frequency near-field and far-field RFID reader applications. The CRLH-TL is achieved using a periodically capacitive gap-loaded parallel plate line.
View Article and Find Full Text PDFSensors (Basel)
January 2025
Institute of Nanotechnologies, Electronics and Equipment Engineering, Southern Federal University, 347922 Taganrog, Russia.
One of the challenging problems in the research and development of vibration sensors relates to the formation of Ohmic contacts for the removal of an electrical signal. In some cases, it is proposed to use arrays of carbon nanotubes (CNTs), which can serve as highly elastic electrode materials for vibration sensors. The purpose of this work is to study the effect of a current-collecting layer of CNTs grown over silicon on the properties of a lead zirconate titanate (PZT) film, which is frequently employed in mechanical vibration sensors or energy harvesters.
View Article and Find Full Text PDFJ Clin Med
January 2025
Department of Restorative Medicine and Neurorehabilitation, Medical Dental Institute, 127253 Moscow, Russia.
To date, there have been no studies on the dynamics of areas of pain, paraesthesia and hypoesthesia after the use of various transcutaneous electrical nerve stimulation in the treatment of meralgia paresthetica. In this pilot study, we observed 68 patients with obesity-related bilateral meralgia paresthetica. Pain syndrome, paraesthesia symptoms, and hypoesthesia were evaluated using 10-point scores.
View Article and Find Full Text PDFGeorgian Med News
November 2024
2Institute of Botany after A. Takhtajyan NAS RA, Yerevan, Armenia.
Parkinson disease (PD) is a common neurodegenerative condition. It affects the central nervous system, and it impairs cognitive processes, motor skills and other functions. The aim of this study was to determine the synaptic processes in medial Entorhinal cortex (mENT) under High frequency stimulation of Basolateral Amygdala on the model of Parkinson's disease under the influence of Hydrocortisone.
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