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Stimulation in Biological News

Bull's-eye electrode helps interpret thoughts, deliver stimulus to aid paralyzed, epileptic patients

... we can change which electrodes the electrical stimulation is applied to without having to conduct surgery ... method of turning off the seizure via electrical stimulation should prevent brain damage and provide what he ... will also be used to determine if the electrical stimulation itself causes any bodily harm, pain or changes in ...

Ultrasound shown to exert remote control of brain circuits

... the activity of neural circuits. "Many of the stimulation methods used by neuroscientists require the use ... nervous system disorders. For example, Deep Brain stimulation (DBS) and Vagal Nerve stimulation (VNS) have been shown to be effective in the ...

NARSAD announces 2008 Prizes for Outstanding Achievement in Research on Mental Health Disorders

... leading experts in the use of brain imaging and stimulation to understand depression and to devise new ... for Advanced Imaging Research and the Brain stimulation Laboratory. He is one of the world's leading experts in the use of brain imaging and stimulation to understand depression and to devise new ...

Coating improves electrical stimulation therapy used for Parkinson's, depression, chronic pain

... Center have designed a way to improve electrical stimulation of nerves by outfitting electrodes with the ... critical step for advancing electrical nerve stimulation therapy. This type of therapy increasingly shows ... electrodes with carbon nanotubes, it improves the stimulation of the nerve and the feedback from the sensors." ...

Yale scientists create artificial 'cells' that boost the immune response to cancer

... in the body. It also causes a fast and effective stimulation of the patients T-cells particularly T-cells of ... eradicating cancer. Safe and efficient T-cell stimulation and proliferation in response to specific ... incorporates signals important for T-cell stimulation in biocompatible polymer particulates, and ...

Study finds Viagra increases release of key reproductive hormone

... increases the amount of oxytocin released by stimulation of the posterior pituitary gland, a small ... the cells become more responsive. "The same stimulation will produce more [oxytocin] release." He says, ... treated with sildenafil, they responded to the stimulation by releasing three times as much oxytocin as they ...

Biomedical engineering student recognized as IEEE's 'New Face of Engineering'

... (17 March 2009) -- Guruprasad Madhavan is working on neuromuscular stimulation approaches that may help prevent osteoporosis, heart failure and mild ... propelling deoxygenated blood back to the heart against gravity. External stimulation of the lower leg musculature could help enhance venous return and ...

Case Western Reserve researchers develop 'wireless' activation of brain circuits

... Semiconductor Photoelectrodes," is the first report of brain stimulation using light-activated semiconductor nanoparticles. This research study ... with brain circuitry are being done now with complex metal electrode stimulation arrays that are not well suited to recreating normal brain activity ...

New regulatory mechanism discovered for cell identify and behavior in forming organs

... flattened layers of cells called an endoderm Dr. Zorn's team found Wnt's stimulation of B-catenin must be restricted in the anterior region so the tissue of ... may unleash Wnt to trigger elevated B-catenin expression, allowing its stimulation of cell-to-cell adhesion to proliferate quickly. Rapid cell proliferation ...

Brown to host conference on advances in neurotechnology

... Rebuilt: How Becoming a Part Computer Made Me More Human Deep Brain stimulation Benjamin D. Greenberg, M.D., associate professor of psychiatry and ... patient who was the first in the United States to undergo deep brain stimulation surgery for obsessive compulsive disorder (OCD) Spinal Injuries ...

Novel mechanism for long-term learning identified by Carnegie Mellon researchers

... individual synapses, or connections between neurons, increased, repetitive stimulation might actually reverse early gains in synaptic strength. Now, ... would mean that learning would stop, and perhaps with continued stimulation neural processes might even degrade but experience showed that that wasnt ...

Bioengineers at University of Pennsylvania devise nanoscale system to measure cellular forces

... were measured. Recording the traction forces in response to such force stimulation revealed two responses: a sudden loss in contractility that occurred within the first minute of stimulation or a gradual decay in contractility over several minutes. For both ...

UCLA researchers discover new molecular pathway for targeting cancer, disease

... manner, however, the Hh pathway can also cause cancers of the brain, lung, blood, prostate, skin and other tissues. Blocking such unregulated stimulation of the Hh pathway had previously been shown in animal studies to prevent cancers, according to the researchers. How LXR was able to inhibit tumor ...

22nd Congress of the European College of Neuropsychopharmacology, Sept. 12-16, 2009, Turkey

... in shaping conduct disorder? Vaccination for Alzheimers disease in dementia Novel treatment for smoking Maternal serotonin Deep Brain stimulation (DBS): new perspectives for treatment News on the NewMood project The educational update sessions at the ECNP Congress will deal with the ...

Ovarian transplantation: First baby is born after a new technique

... are doing well", he said. Dr. Piver and colleagues set out to tackle one of the biggest problems of ovarian transplantation: the low response to stimulation caused by insufficient vascularisation of the transplanted tissue. "In order for a woman to become pregnant, the ovaries need to be responsive ...

Who goes abroad for fertility treatment and why?

... did 2 out of the 18 qualifying centres not reply, but centres which only provided treatments that were less technically demanding, such as hormonal stimulation or artificial insemination, were not included. Additionally, no data were included from countries which provided fewer than five patients per year ...

Chemical in blood may explain susceptibility to bladder pain

... milk," he said. So far, humans with the disorder have the option of bladder distention, dietary changes, exercise, oral drugs, electrical nerve stimulation or surgery. But all treatments target only symptoms because the underlying cause of the disease is unknown. Buffington plans to test human samples ...

Brain-computer interface, developed at Brown, begins new clinical trial

... developing point-and-click capabilities on a computer screen, controlling a prosthetic limb or a robotic arm, controlling functional electrical stimulation (FES) of nerves disconnected from the brain due to paralysis, and further expanding the neuroscience underlying the field of intracortical ...

Cocaine: Perceived as a reward by the brain?

... secretion and the frequency of drug use has been demonstrated, researchers still do not fully understand its mechanism of action. Is it the repeated stimulation of the reward circuit that leads to addiction, or is it an inherent sensitivity to addiction that leads to the increased secretion of dopamine? This ...

New mediator of smoking recruits

... that osteopontin may be pathogenic in smoking-initiated lung disease. The article from Prasse et al "suggest[s] that chronic nicotine stimulation induced by cigarette smoking promotes macrophage and Langerhans cell accumulation in the lung via an increase in [osteopontin production]." ...

Male impotence drugs may deserve a second look in women

... feeds the penile artery which is buried deep in the penis where numerous caverns enable it to be flaccid when not engorged with blood. Physical stimulation of the area causes the tissue, endothelial cells and nerves to release nitric oxide, a powerful dilator of blood vessels. The system works pretty ...

Computer simulations explain the limitations of working memory

... impulses eventually becomes so strong that it prevents the storage of additional visual input, although it can be partly offset through the greater stimulation of the frontal lobes. This leads the researchers to suggest in their article that the frontal lobes might be able to regulate the memory capacity of ...

New research shows high-quality protein in eggs contributes to power, strength and energy

... protein. Most protein consumption occurs in the evening, even though there are significant benefits to consuming more protein at breakfast, such as stimulation of muscle protein synthesis and long-lasting satiety." Additional Benefits of Eggs' High-Quality Protein The high-quality protein in eggs ...

Exercise after knee replacement critical

... progressive strength training two or three times a week starting four weeks after surgery. Half of the group also received neuromuscular electrical stimulation (NMES). Their function was compared to that of 41 patients who received conventional rehabilitation and home physical therapy. Quadriceps ...

Sudden cardiac death without recognizable cause

... Genetically linked diseases of cardiac ion channels are responsible for at least a third of these deaths. As the ion channels are involved in stimulation and conduction in the heart, malfunction can cause cardiac arrythmias, which may lead to ventricular fibrillation. These primary electrical heart ...

Researchers may have found why women have an edge on salt-sensitive hypertension

... responded more like the males. Dr. Pollock says estrogen seems to drive the beneficial action of the ETA receptor. Additionally, researchers found stimulation of the ETB receptor increased urine output and sodium excretion in both sexes, suggesting that it was not a player in the differing responses between ...

Texas Medical Center researchers win collaborative grants

... Medicine and an adjunct assistant bioengineering professor at Rice. They received a grant of $156,499 to pursue their work. Claiming the electrical stimulation of nerves in current medical devices is too diffuse to be effective in the ear, they hope to prove that tightly focused lasers can stimulate small ...

Human beta cells can be easily induced to replicate, according to study in Diabetes

... significant amount of a protein called cdk-6. When cdk-6 production was increased using a viral vector carrying the cdk-6 gene, the cells replicated. stimulation was further enhanced by increasing production of another cell cycle molecule called cyclin D1. Untreated human islets did not replicate. "After we ...

New 'smart' materials for the brain

... injury of the central nervous system. Carbon nano-electrodes could also be used to replace metal parts in clinical applications such as deep brain stimulation for the treatment of Parkinson's disease or severe depression. And they show promise as a whole new class of "smart" materials for use in a wide ...

A walk in the park a day keeps mental fatigue away

... which requires effort to sort out and interpret. Natural environments, by contrast, offer a more coherent (and often more aesthetic) pattern of stimulation that, far from requiring effort, are often experienced as restful. Thus being in the context of nature is effortless, permitting us to replenish our ...

Miscarriage and infertility treatment increase pre-eclampsia risk

... risk of pre-eclampsia compared to women without treatment. Assisted conception treatment was not linked to an increased risk, even though hormone stimulation is part of the procedure. Different causes of infertility (polycystic ovary syndrome, blocked Fallopian tubes etc.) can probably explain the ...

Building better bones and tissue in the lab

... "With the funding from the CFI, we are establishing an innovative laboratory that will allows us to study how cells respond to both mechanical stimulation and biomaterials such as titanium at the same time. We anticipate learning much about how cells sense their environment and subsequently regenerate ...

Mammals can be stimulated to regrow damaged inner retina nerve cells

... rodents, the Reh laboratory conducted a systematic analysis of the response to injury in the mouse retina, and the effects of specific growth factor stimulation on the proliferation of Mller glia cells. The researchers injected a substance into the retina to eliminate ganglion cells (a type of nerve cell ...

How neuronal activity leads to Alzheimer's protein cleavage

... factor called syntaxin. Sakurai et al. now show that although APP preferentially associates with syntaxin microdomains, upon neuronal stimulation APP instead associates with microdomains that contain BACE. It's unclear why APP should be associated with syntaxin, though it might suggest a role ...

Salk scientist Fred H. Gage to receive the Keio Medical Science Prize

... on Nov. 21. Dr. Gage's laboratory concentrates on the adult central nervous system and unexpected plasticity and adaptability to environmental stimulation that remains throughout the life of all mammals. He and his colleagues showed that, contrary to accepted dogma, human beings are capable of growing ...

Sensitive nanowire disease detectors made by Yale scientists

... shows the nanowires can identify activation from a single specific antigen even when there is substantial background "noise" from a general immune stimulation of other cells. Describing the sensitivity of the system, senior author Tarek Fahmy , Yale assistant professor of biomedical engineering , ...

Where optics meets medicine

... by asking their patients to perform certain tasks while electrically stimulating parts of the brain bordering where they plan to cut. The electrical stimulation inhibits brain function in that region, revealing whether losing that tissue would cause permanent damage. Although slow, this is a good way to ...

US Air Force grant targets medical evacuation procedures

... into an environment we know can't be good for them in an effort to move them to safety," he adds. "A dark, quiet intensive care unit with very little stimulation or distraction is preferable. Even minor movements can cause a change in intracranial pressure." For this two-phase study, the UC team will create ...

Why some primates, but not humans, can live with immunodeficiency viruses and not progress to AIDS

... activation of the immune system in humans and macaques. Unfortunately, rather than promoting clearance of the infection, chronic dendritic cell stimulation may result in chronic immune activation and significant unintended damage to the immune system in AIDS-susceptible species. Such chronic immune ...

Previous claims of siRNA therapeutic effects called into question by report in human gene therapy

... of some other siRNAs. Using a mouse model of influenza, the authors demonstrated that the anti-viral activity of siRNA is mainly due to non-specific stimulation of the immune system rather than to a targeted attack on the disease-causing virus. "siRNA holds tremendous potential as a research tool, however ...
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