Tag: "electrical" at medical news
Implanted medical device aims to lower blood pressure
...r regulating heart rhythm," Illig says. "Low-level electrical
stimulation to this area sends signals to the brain, 'telling' it to take action to lower blood pressure through a variety of mechanisms, including blood vessel dilatation, heart rate reduction, and promotion of fluid excretion by the kidneys. In thi...
OHSU researchers demonstrate how Alzheimer's disease impacts important brain cell function
...municate through connections called synapses. Tiny electrical
impulses pass from cell to cell at these synapses. The process also involves a variety of proteins that play various roles prior to, and following these cell transmissions. These proteins are referred to as presynaptic and postsynaptic proteins respe...
Deep brain stimulation in Parkinson disease reduces uncontrolled movements
...AMA/Archives journals. Deep brain stimulation with electrical
impulses delivered to structures deep within the brain is being intensively investigated for the management of advanced Parkinson disease, according to background information in the article. Although a number of studies have shown that stimulation of...
'Nanoshells' simultaneously detect and destroy cancerous cells
... a thin layer of gold. Nanoshells were invented by electrical
engineer Naomi Halas, Ph.D., also of Rice University. Because these spheres are constructed on the nanometer scale (one billionth of a meter, the range where molecular interactions take place), they exhibit unique size-dependent behavior, such as tu...
Feeling safe and secure? CUMC scientists find it's all in the caudoputamen
...to recognize that they were safe from danger (mild electrical
shocks) when they heard a particular sound. He the... (in this case, a blood-curdling human scream, not electrical
shock). Eric Kandel, the senior author of the paper, is University Professor and Kavli Professor at ...
Louder neurons form more connections, Stanford research shows
...ars to be governed by which branches have the most electrical
activity-a finding that could help to explain how ...otein that prevented them from firing their normal electrical
signals. These cells were also engineered to produce a protein that glowed green under the appropria...
Breast cancer detector that uses electricity instead of X-rays under study
A painless, portable device that uses electrical
current rather than X-ray to examine breasts for c...dance scanning, a technique based on evidence that electrical
current passes through cancerous tissue more easily than normal tissue. Preliminary studies have sho...
Mayo Clinic researchers discover genetic glitch in the heart's electrical system
...alled RyR2 that causes malfunctions in the heart's electrical
system and contributes to what were previously une...scovered defects in a gene that causes the heart's electrical
system to malfunction and described how it might cause a drowning of an otherwise healthy person and...
Three-fold risk of sudden cardiac death from some non-cardiac drugs
Non-cardiac drugs that interfere with the electrical
activity controlling the heartbeat are associated ...duration (as measured by electrocardiogram) of the electrical
activity controlling contraction of the cells of the heart muscle. It is the measure of how long it ...
Clinical trial proves link between chiropractic and migraines
... group who were told they were receiving a form of electrical
physical therapy. "Both groups kept a record of their migraines for the whole six months, noting down how often they got them, how severe they were, how long they lasted, and if there was anything they could think of that contributed to them," Tuchin...
NIST method improves timing in oscilloscopes
...Oscilloscopes display graphical representations of electrical
and optical signals as waves, showing how the signals change over time. These instruments often have inaccurate internal clocks that distort output patterns, and they also can exhibit random timing errors called jitter. These errors may lead, for exa...
Magnetic stimulation may improve stroke recovery
...ated wire coil is placed on the scalp, and a brief electrical
current is passed through the coil, creating a magnetic pulse that stimulates the outer part of the brain, called the cortex. The study involved eight people, ages 35 to 63, who had a stroke within the last year and were relearning to use their affec...
Protein essential for hearing also vital for pain perception
...re that opens in response to sound, initiating the electrical
signal cascade that ultimately reaches the brain as we perceive sounds. But the researchers have also found properties of the TRPA1 channel that account for its suspected parallel role in pain sensation, such as why in some cases pain from an injury...
Researchers develop new concept for single molecule transistor
...nducted an experiment to examine the potential for electrical
transistors on a molecular scale. Their approach h...jacent to that charged site is tuned, which allows electrical
current to flow through the molecule from one electrode to another. The current flowing through the ...
Loyola employs high-tech software to target irregular heartbeat more accurately
...ion system to locate more accurately the abnormal electrical
impulses that produce heart rhythm disturbances (a... more realistic picture of the heart's anatomy and electrical
activities. "We're using the new technology to improve further the precision of catheter ablation, ...
UVa Health System doctors study surgery to stop epileptic seizures
...n 2.3 million Americans have epilepsy, a rhythmic, electrical
'storm' in the brain that brings on seizures, rang...surgically implanted in the brain's cortex uses an electrical
current to arrest seizures when they begin. "It's clear that the modern goal of epilepsy treatment i...
Pacemakers and defibrillators for the survival of patients suffering from heart insufficiency
...ynchronisation of the heart contractions caused by electrical
pulse disorders are minimised, and so the heart recovers part of its normal function. This results in a decrease in the symptoms, especially fatigue, and in a greater survival rate for patients. Cardiac resynchronisation therapy can be carried out in...
New hope for treating heart rhythm irregularity that often follows surgery
...d heart tissue. Inflammation led to changes in the electrical
properties of the atria. The inflammatory respons...that inflammation led to non-uniform conduction of electrical
impulses in the atria," Damiano says. "There were areas of very slow conduction and areas of normal ...
Study examines reasons for suboptimal outcomes following deep brain stimulation surgery
...which involves implanting a device to deliver mild electrical
stimulation to block the brain signals that cause tremor. There is currently no consensus regarding appropriate screening procedures, necessary training of individuals providing the therapy, the need for an interdisciplinary team, or guidelines for t...
Investigating 'brain shrinkage' in alcoholics
...lin' that is similar to the plastic coating around electrical
wires. Nerve cells also have shorter and more numerous fibres or processes called dendrites with many fine branching processes similar to the root system of a tree that allow them to 'talk' with neighbouring neurons, often as many as five to 10,00...
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