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Olfactory fine-tuning helps fruit flies find their mates 
Fruit flies fine-tune their olfactory systems by recalibrating the sensitivity of different odor channels in response to changing concentrations of environmental cues, a new study has shown. Disable this calibration system, and flies have trouble finding a mate, the researchers found.
Fruit flies fine-tune their olfactory systems by recalibrating the sensitivity of different odor channels in response to changing concentrations of environmental cues, a new study has shown. Disable this calibration system, and flies have trouble finding a mate, the researchers found.
Physiology
Source: University of California - San Diego
Posted on: Wednesday, Jul 30, 2008, 11:33am
Rating: | Views: 1230 | Comments: 0
Source: University of California - San Diego
Posted on: Wednesday, Jul 30, 2008, 11:33am
Rating: | Views: 1230 | Comments: 0
Summer heat too hot for you? What is comfortable?
Extreme heat or cold is not only uncomfortable, it can be deadly—causing proteins to unravel and malfunction.
Extreme heat or cold is not only uncomfortable, it can be deadly—causing proteins to unravel and malfunction.
Physiology
Source: Johns Hopkins Medical Institutions
Posted on: Wednesday, Jul 30, 2008, 8:51am
Rating: | Views: 1235 | Comments: 0
Source: Johns Hopkins Medical Institutions
Posted on: Wednesday, Jul 30, 2008, 8:51am
Rating: | Views: 1235 | Comments: 0
Suckling infants trigger surges of trust hormone in mothers' brains
Researchers from the University of Warwick, in collaboration with other universities and institutes in Edinburgh, France and Italy, have for the first time been able to show exactly how, when a baby suckles at a mother's breast, it starts a chain of events that leads to surges of the "trust" hormone oxytocin being released in their mothers brains.
Researchers from the University of Warwick, in collaboration with other universities and institutes in Edinburgh, France and Italy, have for the first time been able to show exactly how, when a baby suckles at a mother's breast, it starts a chain of events that leads to surges of the "trust" hormone oxytocin being released in their mothers brains.
Physiology
Source: University of Warwick
Posted on: Friday, Jul 18, 2008, 8:58am
Rating: | Views: 1219 | Comments: 0
Source: University of Warwick
Posted on: Friday, Jul 18, 2008, 8:58am
Rating: | Views: 1219 | Comments: 0
Decisions under pressure: it's all in the heartbeat
A person's heart rate can reveal a lot about how they make decisions when feeling stressed, a Queensland University of Technology academic says.
A person's heart rate can reveal a lot about how they make decisions when feeling stressed, a Queensland University of Technology academic says.
Physiology
Source: Queensland University of Technology
Posted on: Thursday, Jul 17, 2008, 8:56am
Rating: | Views: 1231 | Comments: 0
Source: Queensland University of Technology
Posted on: Thursday, Jul 17, 2008, 8:56am
Rating: | Views: 1231 | Comments: 0
'Hibernation-on-demand' drug significantly improves survival after extreme blood loss
For the first time, researchers have demonstrated that the administration of minute amounts of inhaled or intravenous hydrogen sulfide, or H2S – the molecule that gives rotten eggs their sulfurous stench – significantly improves survival from extreme blood loss in rats.
For the first time, researchers have demonstrated that the administration of minute amounts of inhaled or intravenous hydrogen sulfide, or H2S – the molecule that gives rotten eggs their sulfurous stench – significantly improves survival from extreme blood loss in rats.
Physiology
Source: Fred Hutchinson Cancer Research Center
Posted on: Tuesday, Jul 01, 2008, 2:37pm
Rating: | Views: 1192 | Comments: 0
Source: Fred Hutchinson Cancer Research Center
Posted on: Tuesday, Jul 01, 2008, 2:37pm
Rating: | Views: 1192 | Comments: 0
Post-exercise caffeine helps muscles refuel
Recipe to recover more quickly from exercise: Finish workout, eat pasta, and wash down with five or six cups of strong coffee.
Recipe to recover more quickly from exercise: Finish workout, eat pasta, and wash down with five or six cups of strong coffee.
Physiology
Source: American Physiological Society
Posted on: Tuesday, Jul 01, 2008, 8:47am
Rating: | Views: 1260 | Comments: 0
Source: American Physiological Society
Posted on: Tuesday, Jul 01, 2008, 8:47am
Rating: | Views: 1260 | Comments: 0
Out of the ovary
A human egg is caught on camera as it emerges from a woman's ovary.
A human egg is caught on camera as it emerges from a woman's ovary.
Physiology
Source: Nature
Posted on: Thursday, Jun 19, 2008, 8:52am
Rating: | Views: 1200 | Comments: 0
Source: Nature
Posted on: Thursday, Jun 19, 2008, 8:52am
Rating: | Views: 1200 | Comments: 0
Sprinters Closest to Starter Pistol Have Advantage
On your marks, get set … go to lane 1? Researchers at the University of Alberta in Edmonton studying the connection between loud sounds and reaction time are reporting findings that may have sprinters thinking twice about lane assignments at the upcoming Olympics.
On your marks, get set … go to lane 1? Researchers at the University of Alberta in Edmonton studying the connection between loud sounds and reaction time are reporting findings that may have sprinters thinking twice about lane assignments at the upcoming Olympics.
Physiology
Source: Newswise
Posted on: Wednesday, Jun 18, 2008, 9:06am
Rating: | Views: 1301 | Comments: 0
Source: Newswise
Posted on: Wednesday, Jun 18, 2008, 9:06am
Rating: | Views: 1301 | Comments: 0
Steroids in female mouse urine light up nose nerves of male mice
A group of steroids found in female mouse urine goes straight to the male mouse's head, according to researchers at Washington University School of Medicine in St. Louis. They found the compounds activate nerve cells in the male mouse's nose with unprecedented effectiveness.
A group of steroids found in female mouse urine goes straight to the male mouse's head, according to researchers at Washington University School of Medicine in St. Louis. They found the compounds activate nerve cells in the male mouse's nose with unprecedented effectiveness.
Physiology
Source: Washington University School of Medicine
Posted on: Tuesday, Jun 17, 2008, 6:42pm
Rating: | Views: 1234 | Comments: 0
Source: Washington University School of Medicine
Posted on: Tuesday, Jun 17, 2008, 6:42pm
Rating: | Views: 1234 | Comments: 0
Blood proteins may be future markers for growth hormone doping
Researchers have found potential new biomarkers for growth hormone, which they say could help the sports community in detecting growth hormone abuse.
Researchers have found potential new biomarkers for growth hormone, which they say could help the sports community in detecting growth hormone abuse.
Physiology
Source: The Endocrine Society
Posted on: Tuesday, Jun 17, 2008, 11:07am
Rating: | Views: 1440 | Comments: 0
Source: The Endocrine Society
Posted on: Tuesday, Jun 17, 2008, 11:07am
Rating: | Views: 1440 | Comments: 0
Face it, we're all different
Maybe we're not all the same under our skin, after all — at least where our faces are concerned. Next time you look at that special someone, it's worth reflecting that their alluring smile could well be down to their uniquely wonky facial muscles.
Maybe we're not all the same under our skin, after all — at least where our faces are concerned. Next time you look at that special someone, it's worth reflecting that their alluring smile could well be down to their uniquely wonky facial muscles.
Physiology
Source: Nature
Posted on: Tuesday, Jun 17, 2008, 8:57am
Rating: | Views: 1297 | Comments: 0
Source: Nature
Posted on: Tuesday, Jun 17, 2008, 8:57am
Rating: | Views: 1297 | Comments: 0
Olfactory bulb size may change as sense of smell changes
The olfactory bulb in the brain appears to change in size in a way that corresponds to individual alterations in sense of smell, according to a report in the June issue of Archives of Otolaryngology–Head & Neck Surgery, one of the JAMA/Archives journals.
The olfactory bulb in the brain appears to change in size in a way that corresponds to individual alterations in sense of smell, according to a report in the June issue of Archives of Otolaryngology–Head & Neck Surgery, one of the JAMA/Archives journals.
Physiology
Source: JAMA and Archives Journals
Posted on: Monday, Jun 16, 2008, 4:20pm
Rating: | Views: 1234 | Comments: 0
Source: JAMA and Archives Journals
Posted on: Monday, Jun 16, 2008, 4:20pm
Rating: | Views: 1234 | Comments: 0
Taking the temperature of the no-fly zone
Flies, unlike humans, can't manipulate the temperature of their surroundings so they need to pick the best spot for flourishing. New Brandeis University research in this week's Nature reveals that they have internal thermosensors to help them.
Flies, unlike humans, can't manipulate the temperature of their surroundings so they need to pick the best spot for flourishing. New Brandeis University research in this week's Nature reveals that they have internal thermosensors to help them.
Physiology
Source: Brandeis University
Posted on: Wednesday, Jun 11, 2008, 12:46pm
Rating: | Views: 1207 | Comments: 0
Source: Brandeis University
Posted on: Wednesday, Jun 11, 2008, 12:46pm
Rating: | Views: 1207 | Comments: 0
World's oldest woman had normal brain
A 115-year-old woman who remained mentally alert throughout her life had an essentially normal brain, with little or no evidence of Alzheimer's disease, according to a study in the August issue of Neurobiology of Aging
A 115-year-old woman who remained mentally alert throughout her life had an essentially normal brain, with little or no evidence of Alzheimer's disease, according to a study in the August issue of Neurobiology of Aging
Physiology
Source: Elsevier
Posted on: Monday, Jun 09, 2008, 9:02am
Rating: | Views: 1502 | Comments: 0
Source: Elsevier
Posted on: Monday, Jun 09, 2008, 9:02am
Rating: | Views: 1502 | Comments: 0
Circadian math: 1 plus 1 doesn't always equal 2
In a new study published in the June issue of Neuroscience Letters, researchers have demonstrated that when it comes to the circadian system, not all light exposure is created equal.
In a new study published in the June issue of Neuroscience Letters, researchers have demonstrated that when it comes to the circadian system, not all light exposure is created equal.
Physiology
Source: Rensselaer Polytechnic Institute
Posted on: Friday, Jun 06, 2008, 4:43pm
Rating: | Views: 1228 | Comments: 0
Source: Rensselaer Polytechnic Institute
Posted on: Friday, Jun 06, 2008, 4:43pm
Rating: | Views: 1228 | Comments: 0
Toad research could leapfrog to new muscle model
A toad sits at a pond's edge eyeing a cricket on a blade of grass. In the blink of an eye, the toad snares the insect with its tongue. This deceptively simple, remarkably fast feeding action offers a new look at how muscles work.
A toad sits at a pond's edge eyeing a cricket on a blade of grass. In the blink of an eye, the toad snares the insect with its tongue. This deceptively simple, remarkably fast feeding action offers a new look at how muscles work.
Physiology
Source: EurekAlert
Posted on: Monday, Jun 02, 2008, 1:29pm
Rating: | Views: 1221 | Comments: 0
Source: EurekAlert
Posted on: Monday, Jun 02, 2008, 1:29pm
Rating: | Views: 1221 | Comments: 0
New barn swallow study reveals image makes the bird
In the world of birds, where fancy can be as fleeting as flight, the color of the bird apparently has a profound effect on more than just its image. A new study of barn swallows reveals it also affects the bird's physiology.
In the world of birds, where fancy can be as fleeting as flight, the color of the bird apparently has a profound effect on more than just its image. A new study of barn swallows reveals it also affects the bird's physiology.
Evolution
Source: EurekAlert
Posted on: Monday, Jun 02, 2008, 11:29am
Rating: | Views: 1262 | Comments: 0
Source: EurekAlert
Posted on: Monday, Jun 02, 2008, 11:29am
Rating: | Views: 1262 | Comments: 0
Scientists produce the first smell map
Is the smell of almonds closer to that of roses or bananas? Weizmann Institute scientists have now answered that question (roses) by showing for the first time that smells can be mapped and the relative distance between various odors determined.
Is the smell of almonds closer to that of roses or bananas? Weizmann Institute scientists have now answered that question (roses) by showing for the first time that smells can be mapped and the relative distance between various odors determined.
Physiology
Source: EurekAlert
Posted on: Tuesday, May 27, 2008, 11:17am
Rating: | Views: 1298 | Comments: 0
Source: EurekAlert
Posted on: Tuesday, May 27, 2008, 11:17am
Rating: | Views: 1298 | Comments: 0
Injury -- What Injury? Fighting the Pain
Adrenaline Rush Helps Overcome Pain. Even from a javeline to the leg...
Adrenaline Rush Helps Overcome Pain. Even from a javeline to the leg...
Physiology
Source: ABC News
Posted on: Wednesday, May 21, 2008, 8:24am
Rating: | Views: 1839 | Comments: 0
Source: ABC News
Posted on: Wednesday, May 21, 2008, 8:24am
Rating: | Views: 1839 | Comments: 0
Disabling mouse enzyme increases fertility
Changing the sugars attached to a hormone produced in the pituitary gland increased fertility levels in mice nearly 50 percent, a research group at Washington University School of Medicine in St. Louis has found. The change appears to alter a reproductive "thermostat," unveiling part of an intricate regulatory system that may one day be used to enhance human fertility.
Changing the sugars attached to a hormone produced in the pituitary gland increased fertility levels in mice nearly 50 percent, a research group at Washington University School of Medicine in St. Louis has found. The change appears to alter a reproductive "thermostat," unveiling part of an intricate regulatory system that may one day be used to enhance human fertility.
Physiology
Source: EurekAlert
Posted on: Friday, May 16, 2008, 11:10am
Rating: | Views: 1458 | Comments: 0
Source: EurekAlert
Posted on: Friday, May 16, 2008, 11:10am
Rating: | Views: 1458 | Comments: 0
Study revives Olympic prospects for amputee sprinter
A world-renowned team of experts in biomechanics and physiology from six universities, led by Professor Hugh Herr of the Massachusetts Institute of Technology’s Media Lab, refute scientific claims that the prostheses worn by Oscar Pistorius, a 21-year-old South African bilateral amputee track athlete, provide him with an unfair advantage in the 400-meter race.
A world-renowned team of experts in biomechanics and physiology from six universities, led by Professor Hugh Herr of the Massachusetts Institute of Technology’s Media Lab, refute scientific claims that the prostheses worn by Oscar Pistorius, a 21-year-old South African bilateral amputee track athlete, provide him with an unfair advantage in the 400-meter race.
Health
Source: EurekAlert
Posted on: Friday, May 16, 2008, 9:43am
Rating: | Views: 7227 | Comments: 0
Source: EurekAlert
Posted on: Friday, May 16, 2008, 9:43am
Rating: | Views: 7227 | Comments: 0
Pilot whales are the sprinters of the deep
Rather than cruise slowly at depth, conserving precious oxygen, the whales will make short, intense chases to catch nutritious prey
Rather than cruise slowly at depth, conserving precious oxygen, the whales will make short, intense chases to catch nutritious prey
Physiology
Source: New Scientist
Posted on: Thursday, May 15, 2008, 11:50am
Rating: | Views: 1226 | Comments: 0
Source: New Scientist
Posted on: Thursday, May 15, 2008, 11:50am
Rating: | Views: 1226 | Comments: 0
When it comes to living longer, it's better to go hungry than go running, for mice at least
A study investigating aging in mice has found that hormonal changes that occur when mice eat significantly less may help explain an already established phenomenon: a low calorie diet can extend the lifespan of rodents, a benefit that even regular exercise does not achieve.
A study investigating aging in mice has found that hormonal changes that occur when mice eat significantly less may help explain an already established phenomenon: a low calorie diet can extend the lifespan of rodents, a benefit that even regular exercise does not achieve.
Physiology
Source: EurekAlert
Posted on: Wednesday, May 14, 2008, 8:51am
Rating: | Views: 1200 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, May 14, 2008, 8:51am
Rating: | Views: 1200 | Comments: 0
Early whales got the bends
Several different whale fossils show signs of decompression syndrome the finding could revise the evolutionary history of deep diving
Several different whale fossils show signs of decompression syndrome the finding could revise the evolutionary history of deep diving
Physiology
Source: New Scientist
Posted on: Friday, May 09, 2008, 9:05am
Rating: | Views: 1449 | Comments: 0
Source: New Scientist
Posted on: Friday, May 09, 2008, 9:05am
Rating: | Views: 1449 | Comments: 0
Surprising discovery: Multicellular response is 'all for one'
Real or perceived threats can trigger the well-known “fight or flight response” in humans and other animals. Adrenaline flows, and the stressed individual’s heart pumps faster, the muscles work harder, the brain sharpens and non-essential systems shut down. The whole organism responds in concert in order to survive.
Real or perceived threats can trigger the well-known “fight or flight response” in humans and other animals. Adrenaline flows, and the stressed individual’s heart pumps faster, the muscles work harder, the brain sharpens and non-essential systems shut down. The whole organism responds in concert in order to survive.
Physiology
Source: EurekAlert
Posted on: Thursday, May 08, 2008, 1:57pm
Rating: | Views: 1319 | Comments: 0
Source: EurekAlert
Posted on: Thursday, May 08, 2008, 1:57pm
Rating: | Views: 1319 | Comments: 0
Competitive eating: Are winners born or made?
As the sport grows in popularity, researchers are studying the physiology. Doctors worry that extreme eaters may be endangering their health.
As the sport grows in popularity, researchers are studying the physiology. Doctors worry that extreme eaters may be endangering their health.
Genetics
Source: LA Times
Posted on: Monday, May 05, 2008, 11:34am
Rating: | Views: 1272 | Comments: 0
Source: LA Times
Posted on: Monday, May 05, 2008, 11:34am
Rating: | Views: 1272 | Comments: 0
How David Blaine Held His Breath
He went a record-breaking 17 minutes without breathing, thanks to intensive training, stamina and some lucky human evolution
He went a record-breaking 17 minutes without breathing, thanks to intensive training, stamina and some lucky human evolution
Physiology
Source: Time Magazine
Posted on: Friday, May 02, 2008, 4:11pm
Rating: | Views: 1421 | Comments: 0
Source: Time Magazine
Posted on: Friday, May 02, 2008, 4:11pm
Rating: | Views: 1421 | Comments: 0
Study links low-frequency hearing to shape of the cochlea
Shape matters, even in hearing. Specifically, it is the shape of the cochlea – the snail-shell-shaped organ in the inner ear that converts sound waves into nerve impulses that the brain deciphers – which proves to be surprisingly important.
Shape matters, even in hearing. Specifically, it is the shape of the cochlea – the snail-shell-shaped organ in the inner ear that converts sound waves into nerve impulses that the brain deciphers – which proves to be surprisingly important.
Physiology
Source: EurekAlert
Posted on: Friday, Apr 25, 2008, 4:38pm
Rating: | Views: 1232 | Comments: 0
Source: EurekAlert
Posted on: Friday, Apr 25, 2008, 4:38pm
Rating: | Views: 1232 | Comments: 0
Researchers find dinosaur clues in fat
A team of researchers at New York Medical College has discovered why birds, unlike mammals, lack a tissue that is specialized to generate heat.
A team of researchers at New York Medical College has discovered why birds, unlike mammals, lack a tissue that is specialized to generate heat.
Physiology
Source: EurekAlert
Posted on: Wednesday, Apr 23, 2008, 4:44pm
Rating: | Views: 1448 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, Apr 23, 2008, 4:44pm
Rating: | Views: 1448 | Comments: 0
Gut reactions
Analytical technique shows how metabolism varies between populations.
Analytical technique shows how metabolism varies between populations.
Physiology
Source: Nature
Posted on: Monday, Apr 21, 2008, 3:00pm
Rating: | Views: 1464 | Comments: 0
Source: Nature
Posted on: Monday, Apr 21, 2008, 3:00pm
Rating: | Views: 1464 | Comments: 0
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