electrical signal – Shamskm: A site to exchange knowledge and solutions

Muscle Cell Grafts Keep Broken Hearts from Breaking Rhythm

By Guest PostAugust 10, 2012Health, Sciencearrhythmias, benjamin van biber, broken heart, cardiac muscle, charles e murry, damaged heart, electrical repair, electrical signal, electrocardiogram, embryonic stem cell, geron corporation, guinea pig, heart, heart attack, heart regeneration, heartbeat, irregular heart rhythms, Japan, lower chamber, mechanical function, michael laflamme, muscle cell grafts, myocardial infarction, physiological criteria, regenerate, remuscularization, rhythm, sarah fernandes, shinshu university, transplanted heart, university of washington, ventricle, yuji shiba

Researchers have made a major advance in efforts to regenerate damaged hearts. They discovered that transplanted heart muscle cells, grown from stem cells, electrically couple and beat in sync with the heart’s own mucle.

The grafts also reduced the incidence of arrhythmias (irregular heart rhythms) in a guinea pig model of myocardial infarction (commonly known as a heart attack).

This finding from University of Washington-led research is reported in the Aug. 5 issue of Nature. (more…)

Researchers Develop New Amp to Study the Universe

By Guest PostJuly 23, 2012Scienceamplifier, black holes, byeong ho eom, caltech, electric current, electrical signal, jonas zmuidzinas, NASA, peter day, quantum computer, quantum world, radio wave, wavelengths, xrays, zero resistance

Researchers at NASA’s Jet Propulsion Laboratory and the California Institute of Technology, both in Pasadena, have developed a new type of amplifier for boosting electrical signals. The device can be used for everything from studying stars, galaxies and black holes to exploring the quantum world and developing quantum computers.

“This amplifier will redefine what it is possible to measure,” said Jonas Zmuidzinas, chief technologist at JPL, who is Caltech’s Merle Kingsley Professor of Physics and a member of the research team. (more…)

Pigeons’ Homing Skill Not Down to Iron-Rich Beak Cells

By Guest PostApril 16, 2012Natureballs of iron, beaks, david keays, electrical signal, Environment, imaging technique, infection, iron, macrophages, magnetic cell, magnetic field, magnetic nerve cell, mark lythgoe, mechanism, migratory bird, navigation, nerve cell, pigeon, red blood cell, state-of-the-art, theory, university college london, vienna, white blood cell

The theory that pigeons’ famous skill at navigation is down to iron-rich nerve cells in their beaks has been disproved by a new study published in Nature.

The study shows that iron-rich cells in the pigeon beak are in fact specialised white blood cells, called macrophages. This finding, which shatters the established dogma, puts the field back on course as the search for magnetic cells continues. (more…)

Hyperactivity in Brain May Explain Multiple Symptoms of Depression

By Guest PostFebruary 28, 2012Health, Scienceabnormal patterns, abnormal rhythms, aimee m hunter, andrew leuchter, brain chemistry, brain dysfunction, brain networks, brain regions, brain waves, chaochao cai, connection, depressed brain, depression, electrical activity, electrical signal, function, ian a cook, lilly research laboratories, major depressive disorder, mark wheeler, mdd, pfizer pharmaceuticals, steve horvath, symptoms, synchronization, ucla

*Electrical signals can’t shut off, suggest UCLA researchers*

Most of us know what it means when it’s said that someone is depressed. But commonly, true clinical depression brings with it a number of other symptoms. These can include anxiety, poor attention and concentration, memory issues, and sleep disturbances.

Traditionally, depression researchers have sought to identify the individual brain areas responsible for causing these symptoms. But the combination of so many symptoms suggested to UCLA researchers that the multiple symptoms of depression may be linked to a malfunction involving brain networks — the connections that link different brain regions. (more…)

Tag Archives: electrical signal

Muscle Cell Grafts Keep Broken Hearts from Breaking Rhythm

Researchers Develop New Amp to Study the Universe

Pigeons’ Homing Skill Not Down to Iron-Rich Beak Cells

Hyperactivity in Brain May Explain Multiple Symptoms of Depression