News tagged with sensors
(Medical Xpress) -- Optically monitoring the brain’s neuronal activity can be accomplished in several ways, including electrochromic dyes, hydrophobic anions, calcium imaging, or voltage-sensitive ion ...
Neuroscience Feb 24, 2012 | 4.9 / 5 (10) | 0 |
Researchers have found a novel, non-invasive technique for measuring brain hot spots caused by electromagnetic radiation from mobile phones, according to a study published today.
Medical research Dec 17, 2012 | 3.3 / 5 (10) | 9 |
A Weizmann Institute experiment in which volunteers learned to sense objects' locations using just "rat whiskers" may help improve aids for the blind.
Neuroscience Nov 05, 2012 | 4.5 / 5 (4) | 5 |
(Medical Xpress) -- Researchers in the US have developed a new detector for measuring rare circulating tumor cells (CTCs) in samples of whole blood.
Cancer Jul 07, 2012 | 4.3 / 5 (3) | 0 |
Dartmouth researchers have taken an important step in the ongoing battle against secondhand tobacco smoke. They have pioneered the development of a breakthrough device that can immediately detect the presence ...
Health Mar 21, 2013 | not rated yet | 1 |
Hormonal therapies can help control advanced prostate cancer for a time. However, for most men, at some point their prostate cancer eventually stops responding to further hormonal treatment. This stage of ...
Cancer Mar 18, 2013 | 5 / 5 (2) | 0 |
Classroom rosters combined with human-networking theory may give a clearer picture of just how infectious diseases such as influenza can spread through a closed group of people, and even through populations ...
Diseases, Conditions, Syndromes Feb 13, 2013 | not rated yet | 0 |
(Medical Xpress)—Driving through his hometown, a war veteran with post-traumatic stress disorder may see roadside debris and feel afraid, believing it to be a bomb. He's ignoring his safe, familiar surroundings and only ...
Neuroscience Feb 08, 2013 | not rated yet | 0 |
Physicians may soon have a new way to screen patients for Barrett's esophagus, a precancerous condition usually caused by chronic exposure to stomach acid. Researchers at the Wellman Center for Photomedicine ...
Medical research Jan 13, 2013 | 4 / 5 (5) | 2 |
Researchers used electricity on certain regions in the brain of a patient with chronic, severe facial pain to release an opiate-like substance that's considered one of the body's most powerful painkillers.
Neuroscience Jan 02, 2013 | 4.1 / 5 (7) | 0 |
To make information transmission to the brain reliable, the retina first has to "digitize" the image. Until now, it was widely believed that this step takes place in the retinal ganglion cells, the output ...
Medical research Dec 19, 2012 | 5 / 5 (3) | 0 |
The ability of the eye of a fruit fly (Drosophila melanogaster) to respond to light depends on a delicate ballet that keeps the supply of light sensors called rhodopsin constant as photoreceptors turn on and off in respon ...
Neuroscience Dec 04, 2012 | 5 / 5 (1) | 0 |
(Medical Xpress)—To prevent the risk of 'chair disease', The University of Queensland researchers have developed a 'sitting pad' device that uses an alarm to alert workers to stand up more regularly.
Health Dec 04, 2012 | not rated yet | 0 |
(Medical Xpress)—Researchers at the McCormick School of Engineering are part of a team that has used stretchable electronics to create a multipurpose medical catheter that can both monitor heart functions ...
Cardiology Nov 15, 2012 | 5 / 5 (1) | 0 |
(Medical Xpress)—Research at Sandia National Laboratories has shown that it's possible to predict how well people will remember information by monitoring their brain activity while they study.
Psychology & Psychiatry Sep 10, 2012 | 5 / 5 (4) | 0
A sensor is a device that measures a physical quantity and converts it into a signal which can be read by an observer or by an instrument. For example, a mercury thermometer converts the measured temperature into expansion and contraction of a liquid which can be read on a calibrated glass tube. A thermocouple converts temperature to an output voltage which can be read by a voltmeter. For accuracy, all sensors need to be calibrated against known standards.
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