Articles tagged with Electrophysiology
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.
Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.
Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.
Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.
Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
Researchers have successfully decoded movement signals from patients' brains using electroencephalography (EEG) devices. However, decoding specific signals for lower limb movements remains challenging due to the limited depth of brain activity detection.
Researchers developed a triple-electrode integrated functional electrode for synchronized monitoring of neural signals and dopamine release during sleep-wake transitions. The study highlights the critical role of dopamine in regulating sleep-stage transitions and identifies distinct neuronal populations involved in this process.
Researchers propose a new design approach for intracortical electrodes that can record from many neurons at once without damaging them. The authors outline various manufacturing approaches, including advanced silicon micromachining and thermal fiber drawing, to create flexible devices with low stiffness.
The brain uses reusable patterns of activity across tasks to build new behaviors, snapping together 'cognitive Legos' that can be flexibly combined. This compositionality enables the brain to quickly learn new information and switch between tasks, a feature current AI models struggle with.
The superior colliculus, an ancestral brain structure, enables the brain to distinguish objects from the background and detect relevant stimuli in space. It generates centre–surround interactions independently, allowing for the detection of contrasts, edges, and salient features.
Researchers have discovered that deep sleep plays a crucial role in controlling cerebrospinal fluid dynamics, which is essential for clearing waste from the brain. During slow-wave sleep, changes in cerebrospinal fluid signals are time-locked to slow brain waves and other neural events.
Researchers identify abnormal sugar modifications linked to depressive behaviors, offering potential diagnostic and therapeutic targets. Chronic stress disrupts sugar chains in the prefrontal cortex, triggering depression.
Researchers at Saitama University have revealed that DmMSL10, an ion channel, acts as the Venus flytrap's primary touch sensor. This discovery showcases how plants can sensitively detect gentle stimuli, leading to efficient prey capture and trap closure.
Researchers developed AI models that can identify signs of heart failure in patients from Appalachia using low-tech electrocardiogram results. The models achieved high accuracy and could potentially provide clinicians with an edge in protecting patients' cardiac health.
Research at the University of Rochester Medical Center and University College Dublin has revealed key insights into multisensory integration in the brain. The study found that when changes occur in both visual and auditory inputs, auditory and visual decision processes unfold in parallel but come together in the motor system.
Researchers from Sapiens Labs created two ongoing data acquisition programs in India and Tanzania to collect large-scale, high-quality neuroimaging data. The programs have collected data from over 7,900 participants with comparable data quality to lab settings and lower costs.
A study found that evaluators' musical experience influences the sight-over-sound effect, reducing its impact for those with auditory expertise. The study used Japanese high school brass band competitions and found no significant evidence of the effect in musicians, but a stronger presence in non-musicians.
Researchers emphasize the need to distinguish between harmful PFAS and essential fluoropolymers used in medical devices, which have not been linked to health issues. Experts advocate for a balanced approach to protect both human health and environmental concerns.
Researchers analyzed single-cell transcriptomes from early, middle, and late stages of AD to identify subtle shifts in cellular activity. They found that mitochondria in vulnerable brain areas began to fail early in the disease, even before amyloid plaque buildup. The study also identified a gene called MEG3 involved in regulating mito...
The Mount Sinai Fuster Heart Hospital cardiology faculty practice has received the 2024 Human Experience Pinnacle of Excellence Award from Press Ganey, a leading patient experience organization. The hospital ranks among the top 5% of healthcare providers in delivering patient experience over three years.
Researchers studied active and passive touch tasks using virtual reality and EEG to better understand how people with autism process touch. The study found that individuals with autism showed little variation in brain response to active and passive touch, suggesting difficulty predicting consequences of actions.
The Open Brain Institute launches a groundbreaking platform to simulate and study digital brains, empowering researchers to explore brain complexity and diseases. With its virtual neuroscience laboratories, the OBI enables global collaboration and access to cutting-edge virtual labs.
A new study reveals that maternal immune activation can alter hippocampal neuron excitability in newborn rats, with implications for neurodevelopmental disorders. Prenatal inflammation has been linked to conditions like autism, schizophrenia, and depression, and may underlie their increased risk.
Researchers have discovered that quantum materials can be used to sense the biological electrical activity of living cells with high speed and resolution. The technology uses light to track changes in the material's photoluminescence, mapping the electrical activity of heart muscle cells in real time.
Researchers have designed a novel liquid metal-iron fiber mat conductor for seamless integration into wearable devices. The conductor offers exceptional stretchability, high conductivity, and electromechanical stability, making it suitable for applications in health monitoring and bioelectronics.
A study published in Nature Medicine found that AI algorithm 'DeepRhythmAI' outperformed human technicians in analyzing long-term ECG recordings, detecting severe arrhythmias with 14 times fewer missed diagnoses. The AI algorithm achieved near-perfect sensitivity and ruled out severe arrhythmia with 99.9% confidence.
A new AI-driven approach allows for the reconstruction of heart muscle cell signals with high accuracy, providing insights into cellular communication and response to drugs. This noninvasive method could dramatically reduce drug development time and cost, enabling personalized medicine.
The KAIST research team developed a highly stretchable microelectrode array to monitor organoids' functions, enabling real-time analysis of their states. The technology showed promise in high-throughput drug screening applications, revealing changes in signal characteristics according to size and identifying potential drug interactions.
Researchers from Korea University have developed a groundbreaking technique to transform fibroblasts into mature cardiomyocytes, holding promise for regenerative medicine in treating cardiovascular disease. The method combines fibroblast growth factor 4 (FGF4) with vitamin C to accelerate cell maturation and enhance function.
A team of scientists has pinpointed a critical neural circuit for female sexual rejection, revealing how the brain integrates signals to shape behavior. The ventromedial hypothalamus, specifically progesterone-sensitive neurons in the anterior VMH, play a crucial role in determining whether a female accepts or rejects mating attempts.
A University of Michigan-led study suggests that recycled pacemakers can be used safely and effectively in patients with life-threatening cardiac conditions. The international clinical trial involved nearly 300 people across seven countries and found no significant differences in pacemaker function up to 90 days after the procedure.
KTU researchers have developed an AI model that achieves 97.53% accuracy in diagnosing depression using a combination of speech and brain neural activity data. The multimodal approach provides a more accurate and objective analysis of a person's emotional state, opening the door to new depression diagnosis methods.
The London Health Sciences Centre was the first and only hospital in Canada to implant a new extravascular implantable cardioverter defibrillator (ICD) during clinical trials. The device has been shown to provide long-term safety, efficacy, and performance, offering better comfort and care for patients.
Researchers developed an optimized model for defibrillation that reduces energy consumption by 1,000 times, minimizing cardiac tissue damage and pain. The new approach exploits the sensitivity of fibrillation to small changes in electrical field profiles.
Researchers at EPFL have developed the e-Flower, a flower-shaped 3D microelectrode array that enables real-time recording of neural activity from 3D neural spheroids. This breakthrough technology allows for more accurate and gentle monitoring of brain cells, paving the way for further research on brain organoids.
Researchers at USC developed an approach that matches polysomnography using a single-lead echocardiogram, allowing anyone to create their own low-cost, DIY sleep-tracking device. The software significantly outperformed other EEG-less models and assesses sleep stages at the highest level.
Researchers used advanced techniques to study phage infection at the level of individual bacterial cells. They found that coinfecting phages impede each other's entry, perturbing the cell's electrophysiology and affecting the outcome of infection. This discovery opens a new avenue for research in bacterial electrophysiology.
A dual-chamber wireless pacemaker demonstrates reliable performance over three months, synchronizing contraction of the upper and lower heart chambers 98% of the time. The device continues to work well even when patients engage in activities or have elevated heart rates.
Researchers found that small regions of the brain can momentarily 'flicker' awake while the rest of the brain remains asleep, and vice versa from wake to sleep. This challenges traditional understanding of sleep and wake patterns, which have been defined by slow, long-lasting waves.
A new study uses a closed-loop auditory stimulation approach to selectively modulate brain alpha oscillations in humans. The technique has been shown to interfere with sleep onset dynamics, highlighting its potential as a tool for neuroscientific research.
A recent study published in JAMA Cardiology found that dual direct-current cardioversion is significantly more effective than single cardioversion in restoring sinus rhythm in obese patients with atrial fibrillation. The study demonstrated a 98% success rate for dual cardioversion, compared to an 86% success rate for single cardioversion.
Newborns of bilingual mothers exhibit greater sensitivity to a range of sound pitches compared to those from monolingual mothers. The study suggests that prenatal exposure to multiple languages may shape the fetus's auditory system, influencing its ability to process speech sounds at birth.
A new study using electrophysiology and optogenetics has shown that neurons in the primary visual cortex respond to brightness illusions, settling a long-standing debate in neuroscience. The findings suggest that higher-level neurons play a crucial role in modulating activity in lower-level neurons.
Researchers discovered a class of cerebellar inputs, called climbing fibres, are essential for associative learning to occur. These
Researchers have demonstrated the feasibility of using wearable technology to measure the emotional responses of coffee experts during tastings. The study found significant correlations between biomedical signals and data from conventional questionnaires, confirming the viability of this approach for enhancing coffee quality assessment.
A new study has provided neurophysiological evidence for videoconference fatigue, a feeling of tiredness and alienation caused by prolonged video-based communication. The study found that video conference-based lectures exhausted test subjects more than traditional in-person lectures.
The American Heart Association has selected five finalists in its 6th annual Health Tech Competition to present their innovative technologies. The competition aims to drive technology innovation and transform the landscape of heart and brain health.
Caribbean box jellyfish have demonstrated complex learning capabilities, including associative learning and memory formation, despite having only one thousand nerve cells. This discovery sheds new light on the evolutionary success of jellyfish and raises questions about the universality of advanced learning mechanisms in animals.
Researchers at NIST and their colleagues used machine learning to identify abnormal cardiac rhythms in firefighters, achieving 97% accuracy. The Heart Health Monitoring model could lead to a portable heart monitor to detect early warning signs of heart trouble and prevent fatal cardiac events.
Scientists at Karolinska Institutet have identified a group of nerve cells involved in creating negative emotional states and chronic stress. The neurons, which are sensitive to oestrogen levels, were mapped using advanced techniques such as Patch-seq, Neuropixels, and optogenetics.
An international consortium led by Amsterdam UMC has developed an improved version of the wireless pacemaker, enabling placement in both the atrium and ventricle of the heart. This innovation expands treatment options for patients with slow heart rhythms, improving contraction and reducing the need for multiple mini pacemakers.
The new guideline provides guidance on the use of cardiac resynchronization therapy and conduction system pacing in patients with indications for pacemakers or heart failure. The authors emphasize the importance of shared decision-making between providers and patients, and highlight areas for future research.
A new device invented by Emile Daoud and his team at Ohio State University Wexner Medical Center significantly reduces the risk of esophageal injury during heart ablation. The device uses suction force to gently move the esophagus away from the catheter tip, creating a safe pathway for treatment.
The Texas Heart Institute and The University of Texas at Austin receive a four-year, $2.37 million NIH grant to develop injectable hydrogel electrodes for preventing and managing ventricular arrhythmias. Researchers have already demonstrated the feasibility of pacing the heart using the hydrogel in a porcine model.
A new PANDA-project aims to develop and test an ear-EEG device that can screen patients for Alzheimer's and Parkinson's diseases. The technology measures brain electrical activity and sleep patterns, with the goal of identifying early signs of the diseases and enabling earlier diagnosis.
Researchers at Kyoto University have discovered a genetic mutation that causes lethal arrhythmia in humans. The study found that a novel variant of the CALM2 gene produces robust arrhythmogenicity in human-induced pluripotent stem cell-derived cardiomyocytes.
A new study finds that wireless pacemakers can safely regulate slow heartbeats in select pediatric patients. The leadless pacemaker, a miniature device implanted directly into the heart, has shown stable performance with no reported complications in children aged 4-21.
Researchers at the Francis Crick Institute have identified a new cell type, named F-Cell, that plays a crucial role in touch sensing in fruit flies. The study published in Nature Cell Biology reveals that F-Cells are recruited to tactile hairs and participate in sending signals to neighbouring epidermal cells.
Researchers found that chloride ions bind to sweet taste receptors and evoke a taste sensation. The study suggests that low concentrations of Cl- can produce a 'light' sweet taste sensation via the T1r in the taste buds.
Researchers collected electrophysiological recordings from prefrontal cortical regions in three human subjects with severe treatment-resistant depression. They found lower depression severity correlated with decreased low-frequency neural activity and increased high-frequency activity.
A group of researchers from Osaka University has shown that the segregated function of a messenger ion (Ca2+) can help improve our sense of smell. The study reveals that Ca2+ signaling plays a crucial role in regulating the amplification and reduction of sensory signals, and its processes are clearly segregated within a tiny structure ...
Researchers found that certain wearable devices using bioimpedance sensing technology can interfere with CRT devices, causing pacing interruptions or unnecessary shocks to the heart. The study suggests that future clinical studies are needed to evaluate patients with CIEDs and wearables.
A study of 4,078 cases found that sports-related cardiac arrests in people 65 and older are rare, occurring in only 1.9% of cases. Those who experienced exercise-related cardiac arrests tended to have fewer cardiovascular risk factors and better health outcomes.
Researchers have found evidence that high frequency brain waves in the motor cortex contain information about planned movements, providing a new understanding of how the brain controls movement. The study's findings could inform the development of brain-machine interfaces and reveal new insights into cortical function.
Researchers have developed a novel portable and low-cost macroscopic mapping system for all-optical cardiac electrophysiology using optogenetics and machine vision cameras. The system can stimulate and image engineered networks of human heart cells, providing insights into cardiac wave function and stability.