Tag: "eye" at biology news
Society for Psychophysiology Research
... in which they are unable to control so much as an eye
blink and, until recently, making it nearly impossible to communicate their thoughts or needs. The Thought-Translation-Device (TDD) uses a web-accessible computer system allowing patients to communicate directly with a computer by controlling their b...
Channel protein converts vibrations to electrical signal
...faster than the opening of similar channels in the eye
in response to light indicated to scientists that the channel must respond directly to the mechanical stimulus, rather than relying on a signal from another molecule. The speed of the response was determined more than 20 years ago in the laboratory ...
Where in the brain decisions are made
...e the relative subjective desirability of saccadic eye
movements. "If human choices are guided by circuits involving neurons like those in monkey area LIP, then it is tempting to speculate that the average firing rates of these neurons may also encode the subjective desirability of actions in humans."...
Award-winning INEEL probe to help safely monitor hazardous waste sites
...perimeters, but scientists would prefer to keep an eye
on contaminants long before they leave the area. Now with a new underground probing system from the Department of Energy's Idaho National Engineering and Environmental Laboratory, scientists can safely and more accurately sample and monitor soil in a...
Biomedical engineers at case develop first sliver-sized sensor to monitor glucose levels
...placed just under the skin and seen with the naked eye
for very accurate, continuous examination of glucose level for diabetics and other bodily fluid levels with the help of simple color changes. Colors in the tiny sensor, which is smaller than the tip of a pencil, gradually change from orange (low gl...
Study demonstrates Cenestin reduces sleep disturbances/night sweats in post-menopausal women
...standard monitoring methods to track sleep stages, eye
movement, total sleep time, wake time and the number of times they awoke during the night. Galvanic skin responses -- an electrical skin conductance from the palms, face or scalp -- measured sweat gland activity. Results showed a 79 percent ...
Retinal stem cells can regenerate after transplant
...ls survived, migrated into the sensory part of the eye
and formed the correct cells." The research has implications for future treatment of degenerative eye
diseases such as retinitis pigmentosa and macular degeneration but that's still a long way off, says...
Insects implicated in the evolution of new human infectious diseases
...thogenic ancestor as little as 1,500 years ago, an eye
blink in evolutionary time, suggesting that similar scenarios are possible for other insect-associated microbes. The researchers suggest the reason that unusual infections, such as those caused by Photorhabdus asymbiotica, are not currently a large p...
Evidence that learning is consolidated during sleep
...ample, sleep consists of two major stages -- rapid eye
movement (REM) sleep and non rapid eye
movement (NREM) sleep. Evidence from animal studies of learning and sleep indicated that spatial mem...
Darwin's greatest challenge tackled: the mystery of eye evolution
...sed that it was "absurd" to propose that the human eye
evolved through spontaneous mutation and natural s...y," explains Wittbrodt. "Quite possibly, the human eye
has originated from light-sensitive cells in the brain. Only later in evolution would such brain cel...
Bristol scientists find key to unlock body's own cancer defence
...ars to work out how to treat patients with cancer, eye
disease and other conditions where this protein is important."...
November nutrition news from the Friedman School of Nutrition Science and Policy at Tufts
...ty, have been researching the role of ubiquitin in eye
health since 1982. Taylor describes ubiquitin this...dants, might be used to reduce the stresses in the eye
which contribute to the diminished function of the ubiquitin pathway. "We hope to find a way to ext...
Genome of ancient fish could reveal evolutionary mysteries, Stanford scientists say
...ntil 1938 was thought to be extinct has caught the eye
of geneticists at the Stanford University School of Medicine who hope to sequence the ancient genome to learn how animals evolved to live on land. The 5-foot, 130-pound fish in question, called the coelacanth, ekes out an existence in cool, deep-wate...
Study shows stem cells can preserve vision
...etina is a tissue-thin membrane at the back of the eye
responsible for sending light and images from the outside world through the optic nerve to the brain, which interprets them. The retina contains light sensitive cells, known as rods, which make it possible for us to see in black and white and in low ...
Scientists develop 'electronic eye' for the blind
...sor Shioyama said: "The camera would be mounted at eye
level, and be connected to a tiny computer. It will relay information using a voice speech system and give vocal commands and information through a small speaker placed near the ear". The device developed at Kyoto is the final product of a research ...
'Blind' cells see the light; maybe someday humans will, too
...over the most common approach to creating a bionic eye
-- inserting electrodes into the optic nerve to si...-- witness the success of cochlear implants -- the eye
is a much more complicated place, Kramer said. "This is a more organic, less invasive approach than ...
Study: Eat leafy green veggies to help prevent cataracts
...udies have suggested that these antioxidants boost eye
health. Results from laboratory experiments on ...an antioxidant also thought to reduce the onset of eye
diseases. Lutein and zeaxanthin were nearly 10 times more powerful than vitamin E in protecting t...
A new tiger subspecies?
...n the forests of the night / What immortal hand or eye
/ Could frame thy fearful symmetry?" When William Blake wrote these words in the late 1700s, the deforestation and habitat destruction that would decimate wild tiger populations had already begun. In 1900, an estimated 100,000 wild tigers lived throu...
Scientists solve the mystery of how Botox attacks nerves and eliminates wrinkles
... treat uncontrolled blinking (blepharospasm), lazy eye
(strabismus), involuntary muscle contractions in the neck (cervical dystonia) and acute underarm sweating (severe primary axillary hyperhidrosis). Botox users might be surprised to learn that they're actually receiving minute injections of a bacteria...
Timing scavenging to prevent age-related blindness
Light-detecting cells in the eye
must renew their light-gathering apparatus each day at sunrise (for rod cells) or sunset (for cone cells) by shedding their outermost tips, which are then gobbled up and digested by surface (epithelial) cells. Nandrot and colleages now report in the ...
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