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Tag: "sensory" at biology news

Study shows humans have ability to track odors, much like bloodhounds

... the olfactory nerve in the nose, but also a nasal sensory nerve, the trigeminal nerve. Most odors stimulate both, and some, like onions and ammonia, are stinging enough to bring tears to the eyes. Perhaps, some suggested, von Bekesy's subjects were localizing odors based on trigeminal nerve stimulation, not...

IMF Launches World’s First DNA Database for Myeloma Patients

... mimics that evolutionarily exploit a pre-existing sensory bias in females," he said. "That is, male ornamentation of the tail fin may have evolved largely due to the pre-existing preference for an elongate structure of a similar shape -- the gonopodium." ...

Certain fish have a special mating preference

... mimics that evolutionarily exploit a pre-existing sensory bias in females," he said. "That is, male ornamentation of the tail fin may have evolved largely due to the pre-existing preference for an elongate structure of a similar shape -- the gonopodium." ...

Stem cell treatment improves mobility after spinal cord injury

...myelin is stripped away through disease or injury, sensory and motor deficiencies result and, in some cases, ...capable of regenerating, which ultimately restores sensory and motor activity. Oswald Steward, Gabriel I. Nistor, Giovanna Bernal, Minodora Totiu, Frank Clout...

Brain Scan Study of Smokers Reveals Signature of Craving

...nt evidence suggests that conditioned responses to sensory cues also play an important role, McClernon said. Brain imaging studies of smokers have found increases in brain activity in response to smoking-related images in areas associated with attention, motivation and reward. However, those studies examined...

Mice brains shrink during winter, impairing some learning and memory

...wed that nonspatial learning and memory, including sensory abilities, were not affected by short days. "It appears that only specific kinds of brain function are impaired during winter," Nelson said. In a second experiment, 16 adult male white-footed mice were kept in short or long days for 14 weeks, after...

Researchers Closer To Helping Hearing-Impaired Using Stem Cells

...row into cells with many of the characteristics of sensory nerve cells -- neurons -- found in the ear. The re...he process would result in development of specific sensory neurons.?/p> The research was published March 18 in the online early edition of the Proceedings ...

Molecular thermometers on skin cells detect heat and camphor

...tion comes to it through a sophisticated system of sensory neurons that connect the brain to organs like the ...xpectations that temperature sensors be present in sensory neurons innervating the skin, TRPV3 protein was found in actual skin cells (keratinocytes) and not i...

Brain May Be Less Plastic Than Hoped

... cortex after these areas fell silent from lack of sensory input due to injury. This led to speculation that adult brains could compensate for permanent damage to the eyes, ears, skin, or even to itself. In the case of damage to the retina, Smirnakis said, “the predominant-but by no means universal-view was ...

To sea or not to sea: When it comes to salmon sex, size sometimes doesn't matter

...t then go elsewhere? Do they have poorer memory or sensory capabilities and so stray out of ignorance? Or are there other factors involved? "These strays are not merely an aberration to be ignored. Much of the present range of Pacific salmon was covered by thick glaciers some 10,000 to 15,000 years ago, so ...

Grasping metaphors: UC San Diego research ties brain area to figures of speech

...s succeed at this task ?of translating one sort of sensory information into another ?patients with damage to the angular gyrus performed at the level of chance. Three age-matched control subjects, on the other hand, with lesions in other areas of the brain, performed normally both with proverbs and the boob...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...reatures, humans perceive with limited spectra and sensory modes. We bias research with the unconscious and incorrect assumption that other animals 'see' the world as we do. Every time we discover otherwise, it expands the horizons of scientific knowledge and sends us the humbling and vital message that we a...

Brain-injury rehabilitation depends on acetylcholine circuitry

...ate cholinergic nerves connecting to the motor and sensory regions of the animals' cortex. The other control group received a sham injection. The researchers then used electrical probes to create small lesions in the rats' brain region responsible for controlling limb movement. They then gave the rats rehab...

Children's taste sensitivity and food choices influenced by taste gene

...e mothers and their children may live in different sensory worlds due to differences of taste sensitivity related to genes, age, or both. Such differences influenced interactions between mothers and children: mothers insensitive to bitter taste perceived bitter-sensitive children as being more emotional than...

New insight into people who 'see' colors in letters and numbers

...re condition called synesthesia--in which people's sensory perceptual circuitry seems to be miswired--was long dismissed as an oddity not worthy of scientific study. Now, however, researchers such as Hubbard and his colleagues are using the condition to gain insights into the neural basis of perception. In ...

Research on Worms Yields Clues on Aging

...ty.The worms' mutated genes affect the function of sensory neurons thatregulate the release of an insulin-like hormone. "Sensory inputs fromthe outside regulate the level of insulin signaling inside the body,which then in turn regulates longevity in the worms," Kornfeld says.Testing the anticonvulsants on lo...

Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer

...es, includes an unexpectedly complex repertoire of sensory genes as well as a variety of bacterial-like genes that contribute to the organism's unique biology. The report, which appears in the February 24 issue of Nature, presents the first genome-wide study of an amoeba. It is also the first genome sequenc...

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