stimulation 2 2

Tag: "stimulation" at biology news

Trying to control pain can be a double-edged sword, say scientists

...mulus, when they were not able to stop the painful stimulation subjects with no control expectations were better at activating this brain region than those with a strong control belief. The findings support the practice of "acceptance-based therapy" whereby doctors focus on training patients to cope with the ...

PET imaging shows young smokers quick benefit of quitting

...d by coronary blood flow and flow response to cold stimulation (also called 15O-water PET) in healthy young smoke...t) blood flow was measured both at rest and during stimulation induced by a cold pressor test by using PET with the oxygen tracer called 15O-water. Additional rese...

A new approach to growing heart muscle

...ble of generating pulsating forces and reacting to stimulation more like real muscle than ever before. The three-dimensional tissue was grown using an innovative technique that is faster than others that have been tried in recent years, but still yields tissue with significantly better properties. The approac...

Neural networking nanotubes

...cle contraction. The researchers also suggest that stimulation could be applied to heart muscle cells to stimulate the heart. They caution that a great deal of work is yet to be carried out before such devices become available to the medical profession. ...

First biomarker for human sleepiness identified in fruit flies

...the flies have periods of inactivity where greater stimulation is required to rouse them. Like humans, flies deprived of sleep one day will try to make up for the lost time by sleeping more the next day, a phenomenon referred to as increased sleep drive or sleep debt. To identify a marker for sleep debt, Shaw...

Researchers discover mechanism that determines when detailed memories are retained

...and Memory. "This is the first time that direct stimulation of a brain region has controlled the amount of det...ring some of the trials, they paired one tone with stimulation of a section of the rats' brains known as the nucleus basalis, which relays commands to the auditory...

Mirrors in the mind: New studies elucidate how the brain reflects onto itself the actions of others

...facilitation was measured by the ability of benign stimulation of a particular brain region to promote motor signals (corresponding to those finger movements) in the subject's own hand. The researchers found that such facilitation did occur, but, curiously, it occurred when the illusion was not effective, and ...

Cardiologist's 'living chip' changes science of disease monitoring

... blood vessels and nerves to provide detection and stimulation of the surrounding tissues or organ systems, with the ability to detect changes. A change triggers a message to a wireless device to alert the patient early on about a problem. The patient can then contact their physician. For a patient with heart ...

Critical hearing gene helps send auditory messages to brain

...fness results from an inability to translate sound stimulation into the release of a chemical nerve messenger, or neurotransmitter, that would usually pass that information to auditory nerves and on to the brain, they reported. The sensory structures within the mutant animals' ears otherwise appeared to develop ...

Paying attention sets off symphony of cell synchronization

...ention improves the perception of incoming sensory stimulation has been a long-time concern of scientists. One hypothesis is that when you pay attention neurons produce stronger brain activity, as if the stimulus itself was stronger. That would mean that paying attention might make something appear more intense,...

Computer-based 'games' enhance mental function in patients with Alzheimer's

...n more successful than classic exercises of mental stimulation commonly used with dementia patients. The findings...rogram that included 2.5 to 3.5 hours of cognitive stimulation tasks, musical therapy, arts and crafts, physical activity and programs that reinforced instrumental...

St. Jude finds clues to hearing loss from chemotherapy

...r sections of the inner ear that sense sound; that stimulation is then turned into electrical impulses that go to the hearing center of the brain. Understanding how a specific mutation disrupts that cascade might lead to ways to repair the damage, Zuo said. For example, one type of damage that occurs in childre...

Electronic chip, interacting with the brain, modifies pathways for controlling movement

...ing site changed to resemble those evoked from the stimulation site. The researchers said that a likely explana...thways within the cortex from the recording to the stimulation site. This strengthening may have been produced by the continuous synchronization of activity at the...

Nanotubes used for first time to send signals to nerve cells

...hrough the SWNTs. In addition to their electrical stimulation experiments, the scientists also studied how different kinds of SWNTs affected the growth and development of neuroblastoma cells. They compared cells placed on mats made of "functionalized" SWNTs, carbon nanotubes with additional molecules attached t...

Quick -- what’s that smell?

... of any one odorant probably involves simultaneous stimulation of several different receptors and that an olfactory code enables identification of specific odorants by the brain. Previous experience and motivational state also interact with odorant information to influence processing and identification. It still...

In drug design, a loose fit may be best bet

...chain of events throughout the body, including the stimulation of the thyroid gland. As with many of the body's hormones, cells recognize TRH using a receptor belonging to a mega-family of proteins known as G-protein-coupled receptors (GPCRs), which play a lead role in cell-to-cell communication. When a hormone ...

Dissecting the machinery of nicotine's reward

...al to turning on the brain's reward mechanism. The stimulation of nAChRs by nicotine makes them more responsive to their natural triggering neurotransmitter, acetylcholine (ACh). Receptors such as nAChRs are complex proteins that nestle in the surface of cells and trigger cellular responses when activated by ei...

Stimulation of the semicircular canals can artificially control human walking and balance

...and balance. The researchers found that artificial stimulation of semiciruclar canal nerves afforded "remote cont...rnal control, leads the researchers to expect that stimulation techniques developed from the approach used in the new study will lead the way to diagnostic, therap...

New study reveals signaling pathways required for expansion of pancreas stem cells

...t cells." The group's results indicate that BMP4 stimulation blocks the differentiation of endocrine progenitor cells through induction of Id, which, in its dual role, promotes their expansion, revealing a novel paradigm of signaling that explains the balance between expansion and differentiation of pancreatic...

Natural pine bark extract relieves muscle cramp and pain in athletes and diabetics

...nogenol improved the cramping in patients due to a stimulation of blood flow to their muscle tissue. Nitric oxide (NO) a blood gas, is well known to enhance blood flow and Pycnogenol may be influencing the activity of NO," said Rohdewald. "The insufficient production of NO is the common denominator responsible f...

1 2 3 4 5