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Tag: "seconds" at biology news

Dinosaur hearing, listening to muscle noise, quieter cubicles

...aptured voice-production events as short as 0.0316 seconds and as long as 100 s. On average, the teachers had 1,800 occurrences of voicing per hour at work, compared to 1,200 per hour during non-work periods (for a total of as many as 20,000 per day). Voicing occurred 23 percent of the total time at work and...

Imaging pinpoints brain regions that 'see the future'

...brain activation as college students were given 10 seconds to develop a vivid mental image of themselves or a famous celebrity participating in a range of common life experiences. Presented with a series of memory cues, such as getting lost, spending time with a friend or attending a birthday party, parti...

Metacognition: Faced with a test, rats can check their knowledge first

... noise of either short duration (between 2 and 3.6 seconds in length) or long duration (between 4.4 and 8 seconds). In the subsequent test, rats had to classify the recent noise as either "short" or "long"—a relatively easy choice if the noise fell to one extreme or another (for example, 8 seconds), but a di...

Trusting your instincts leads you to the right answer

...mbol on screen and were given between zero and 1.5 seconds from the moment their eyes had landed on the odd one out to scrutinize the image. Participants had to decide whether the odd one out was on the left or the right-hand side of the screen. The researchers found that participants scored better if they w...

Rapid, Low-Cost DNA Testing

...e is done: Step 1. Hybridization. This takes 10 seconds and costs $0.025. Step 2. Add gold colloid to the hybridization solution. This takes 10 seconds and costs $0.02. Step 3. Add salt to the solution. This takes 10 seconds and costs $0.01. Step...

Biologists prove critical step in membrane fusion

...sicles are attached to the plasma membrane. Within seconds after fertilization, the contents of these vesicles are rapidly released. Previous research has shown that special proteins kept these vesicles tethered to the egg’s membrane. What about the membranes? What do they look like before vesicle cargo is r...

New research shows why too much memory may be a bad thing

...uge mall lot or remembering a phone number for few seconds before writing it down. Because working memory is highly sensitive to interference from information previously stored in memory, forgetting such information may therefore be necessary for performing everyday working memory tasks, such as balancing yo...

Fast-freeze snapshot yields new picture of nerve-muscle junction

...ique is to use gluteraldhyde fixation, which takes seconds or minutes to complete -- unlike the fraction of a second when using the high-pressure freeze method. What's more, during gluteraldhyde fixation the nematodes writhe around, releasing neurotransmitters while cells become dehydrated, causing synaptic ...

Fast test for low blood flow in dogs detects early heart trouble

...recise, 3-D, diagnostic pictures within five to 10 seconds by quickly passing X-rays through the body. The resulting digitized signals, called "slices" - and there are 64 - are then reconstructed by a computer and used to build a three-dimensional image of the heart. The picture is so good, researchers say...

MIT material stops bleeding in seconds

...ood clotting. Clotting generally takes at least 90 seconds to start, and the researchers found no platelet aggregation, a telltale sign of clotting. Other MIT researchers who are co-authors on the paper are Gerald Schneider, professor of brain and cognitive sciences, and Shuguang Zhang, associate director...

Silver bullet: UGA researchers use laser, nanotechnology to rapidly detect viruses

...viruses as diverse as influenza, HIV and RSV in 60 seconds or less. In addition to saving time, the technique ?which is detailed in the November issue of the journal Nano Letters ?could save lives by rapidly detecting a naturally occurring disease outbreak or bioterrorism attack. "It saves days to weeks,...

Human stem cells delay start of Lou Gehrig's disease in rats

...ing the highest angle they could cling to for five seconds without sliding backwards. While all the rats grew progressively weaker, those injected with live cells did so much more slowly than those injected with dead cells. Close examination of the transplanted cells also revealed that more than 70 percen...

Thermal imaging shatters arousal gender gap myth

... seconds. The men reached maximal arousal in 664.6 seconds (roughly ten minutes), the women in 743 seconds ?a statistically negligible difference. "In any experiment on sexual arousal done in a labo...

Brain's 'gambling circuitry' identified

...heorized the researchers; and in the following six seconds before the second card, they were assessing the risk revealed by the first card. The researchers based this approach on studies by other researchers of such processes in primates. Quartz and colleagues found they could distinguish brain regions tha...

'Micro-boxes' of water used to study single molecules

...ual droplets, and the light emissions over several seconds are analyzed to count the molecules and observe other phenomena. The researchers use two sets of optical tweezers to move droplets together to fuse them and mix their contents (see accompanying video). The team demonstrated the technique by trapping ...

APS lecturer shows rare video of 'teacher-student' immune cell interactions in live animal

...in adapting the technology was that it takes 15-30 seconds to generate the necessary series of photographs to create the 3-dimensional footage and the animal must remain perfectly still for it to work. It took a year to figure out how to keep the anesthetized animal from moving, he said. Others have also wo...

U of MN researchers develop way to visualize synchronized interactions of nerve cells in the brain

...c resonance imaging (fMRI) are too slow--they take seconds to detect activation. To better evaluate how the nerve networks in the brain communicate and interact with one another, researchers used magnetoencephalography (MEG) to record, with 1- millisecond temporal resolution, tiny magnetic fields from the...

You will remember this

... the moment we get new information but also in the seconds before. Dr Leun Otten from UCL Psychology and the... the first, a symbol was presented on screen a few seconds before each word, telling the subjects what kind of decision to make about the following word. Parti...

Brainstem blocks pain to protect key behaviors

...stponed retracting the heated paw for six to eight seconds and continued to eat. Food choice made no difference. Rats focused just as intently on standard rat chow as when munching chocolate chips, yogurt drops or butter cookies. Although earlier studies found that eating took precedence over pain in fo...

Free-energy theory borne out in large-scale protein folding

...elf-assembles into its characteristic shape within seconds of being created. "The folded, functional form of the protein is what really matters, and our interest is in creating a folding roadmap of sorts, a plot of the thermodynamic route that the protein follows as it moves toward equilibrium," said co-aut...

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