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Tag: "sense" at biology news

Ancient DNA provides clues to the evolution of social behavior

... colonial tuco-tucos are closely related, it makes sense evolutionarily for individuals to cooperate, she s...y stay home and help their sisters breed, it makes sense because they'll be helping to pass on genes that are almost identical to their own.'' No one knows ...

Both alcoholism and chronic smoking can damage the brain's prefrontal cortex

...then to the brain, allowing the person using it to sense the arm's motion and location, and to feel objects with the mechanical hand and fingers. The neural interface device between the arm and the person wearing it would be implanted in what is left of the amputated arm or shoulder, and would send signal...

Warbling whales speak a language all their own

...irst author of the paper. With limited sight and sense of smell in water, marine mammals are more dependent on sound--which travels four times faster in water than air--to communicate. For six months each year, all male humpback whales in a population sing the same song during mating season. Thought to a...

University of Utah to help build bionic arm

...then to the brain, allowing the person using it to sense the arm's motion and location, and to feel objects with the mechanical hand and fingers. The neural interface device between the arm and the person wearing it would be implanted in what is left of the amputated arm or shoulder, and would send signal...

Genome sequencing is for ecologists, too

...ormation from its genome will help biologists make sense of similarities and differences among the intensively studied genetic models of insects, which are evolutionary relatives of crustaceans. "The genome sequences are being completed for several insects because they are important model organisms -- lik...

Nanotechnology may find disease before it starts

.... It turns out that not only can ultrasound waves sense nanoparticles, but the particles can brighten the resulting image. One day, those bright spots may indicate that a few cells in the area may be on the verge of mutating and growing out of control. "The long-term goal is to use this technology to imp...

Malaria parasites develop in lymph nodes

...grate all these new data into something that makes sense from the immune standpoint," the researcher observed. Understanding the intricacies of the mammalian immune response to Plasmodium infection might help scientists create better vaccines, including vaccines that target parasites before they develop in...

Male rivalry increases when females at most fertile, say researchers

... New research at the University has found that men sense this preference shift in their female partners and find masculine men more threatening during their partner's most fertile phase. Rob Burriss and Dr Anthony Little, from the University's School of Biological Sciences, also found that men only behave...

Immune system response to viral DNA is unique

...ade of RNA and viruses made of DNA. Infected cells sense the presence of foreign nucleic acids as viruses replicate inside them and distill the problem of recognizing a dizzying array of viruses into a relatively simple mechanism for turning on the immune response. "It is well established that such a path...

Screening blood for West Nile virus

...l US states for West Nile virus (WNV) makes little sense from a public health point of view, say researchers from Columbia University and Harvard School of Public Health. And while this is not yet the time of year to worry about mosquitoes, it seems a good time to take a look at the current policy on scr...

Duck-billed dino crests not linked to sense of smell

...g to do with what many scientists suspected -- the sense of smell. Speculation about their function has le...: that the crests evolved to increase the animal's sense of smell. "From the brain case, there's no indication that the nerves curled upwards into the crest,...

Detection of DNA on nanotubes offers new sensing, sequencing technologies

...because our detection setup is in solution, we can sense in a natural biological environment." ...

Living taste cells produced outside the body

...ities to increase scientists' understanding of the sense of taste and how it functions in nutrition, health...ue may provide hope for people who have lost their sense of taste due to radiation therapy or tissue damage, who typically lose weight and become malnourishe...

New evidence questions the simple link between prion proteins and madcow disease

... vCJD in humans, scientists have struggled to make sense of how an abnormal variation of a normal protein can trigger an infectious disease. Some are questioning whether this simple relationship exists at all. This paper adds new evidence that can inform the debate. Firstly, it is known that individual pe...

You will remember this

...t, said: "It sounds a bit like clairvoyance in the sense that we're able to predict whether someone will remember a word before they even see it. That's really new - scientists knew that brain activity changes as you store things into memory but now we have found brain activity that tells how well your mem...

T-rays: New imaging technology spotlighted by American Chemical Society

...hermal energy in the THz range that can be used to sense and image objects. A particular advantage of T-ray systems is that they can also give spectroscopic information about the composition of chemical and biological material, and are safer for biological applications than X-ray photons, that emit a milli...

Have a taste for fat? Yes! A sensor in the mouth promotes preference for fatty foods

The sense of taste informs the organism about the quality of ingested food. It comprises five sub-modalities that perceive sweet, salt, sour, bitter, and umami stimuli. The possibility for an additional taste modality directed to lipid has often been suggeste...

In SAD patients, autumn antidepressants can prevent winter depression

...Guilford Publications, 2005). "The strategy makes sense when dealing with a condition where the pattern of relapse is somewhat predictable and the symptoms being prevented can be highly distressing and debilitating," comments Dr. Rosenthal. "In my opinion, the treatment used in the present study offers a...

Worms know bad food when they smell it

...tal behaviors is movement toward food based on its sense of smell. In the laboratory, this often means wriggling across a plate full of agar toward a cluster of E. coli. But in its natural environment, the soil, C. elegans encounters an astounding variety of bacteria. As it writhes through its world, ...

Bats use touch receptors on wings to fly, catch prey, study finds

...art of a long-forgotten theory that bats use their sense of touch for nighttime navigation and hunting. Th...cholocation and the bat auditory system. The bat's sense of touch has been a side interest since the early 1980s. To test his hypothesis, Zook removed the ...

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