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Tag: "learning" at biology news

A gene's first 'kiss' sets off that affair known as puberty

..., help control GnRH release in primates." Besides learning that GPR54 and KiSS-1 are expressed inside the hypothalamus of primates at the time of puberty, the researchers also found that by giving animals kisspeptin they could, essentially wake up the reproductive hormones from their childhood hibernation. W...

New push for public health, AIDS spending at African Union summit

...keswoman Shehnilla Mohamed said. "Governments are learning that fighting AIDS is not just a health issue but a development issue," she said. "Now they have to deliver on the existing protocols and develop a serious and practical strategy." Mozambique is the only country that has, thus far, committed to al...

Drug That 'Tags' Decision-making Areas Of The Brain May Aid

...areas of the brain responsible fordecision-making, learning and memory. Lead researcher JogeshwarMukherjee, UC...rons to mediatecomplex behaviors such as an infant learning to recognize his or herparents, a senior citizen learning to play piano, or the process ofaddiction ...

Plants, animals share molecular growth mechanisms

... issue of the journal The Plant Cell. "Perhaps by learning about this pathway for actin filament formation, we can engineer plant cells to grow in different ways or alter how cells respond to external stimuli so they can defend themselves against insect or fungal attacks," Szymanski said. A protein complex ...

Researchers Uncover Key Step In Manufacture of Memory Protein

... BDNF is made may help us to better understand the learning process, perhaps leading to better treatments for disorders of learning and memory,?said Duane Alexander, M.D., Director of the National Institute of Child Health and Human...

Molecular machine may lead to new drugs to combat human diseases

... splice the RNA back together. Scientists are just learning whether many DNA sequences previously believed to have no function actually may play specialized roles in cell behavior. While humans have introns, they don't have Group I introns. Many pathogens that cause human diseases, however, do have Group I i...

Poplar trees redirect resources in response to simulated attack

...emical pathways is an incredibly powerful tool for learning how plants cope with stress," says plant scientist Michael Thorpe who is helping to build the plant-imaging program at Brookhaven. Plants subjected to the jasmonic acid "attack" produced more radiolabeled sugar and delivered more of it to the roots ...

New research questions basic tenet of neuron function

...ndent release is responsible for functions such as learning and memory. ...

ASU researchers finds novel chemistry at work to provide parrot's vibrant red colors

...tive damage. Now, McGraw says, he's interested in learning more about the connection between the red colors and anti-oxidants within and among parrot species, as well as "to specifically explore the balance of naturally and sexually selected costs and benefits to becoming colorful. "Parrots are unusual amon...

Elephants imitate truck noises, other animals

...ies, the first known example after humans of vocal learning in a non-primate terrestrial mammal. The discovery...day's Nature, further supports the idea that vocal learning is important for maintaining individual social relationships among animals that separate and reunite...

Transport System Smuggles Medicines Into Brain

...tive damage. Now, McGraw says, he's interested in learning more about the connection between the red colors and anti-oxidants within and among parrot species, as well as "to specifically explore the balance of naturally and sexually selected costs and benefits to becoming colorful. "Parrots are unusual amon...

Elephants imitate sounds as a form of social communication

...ies, the first known example after humans of vocal learning in a non-primate terrestrial mammal. The discovery...day's Nature, further supports the idea that vocal learning is important for maintaining individual social relationships among animals that separate and reunite...

Deficiency of growth hormone and IGF-1 reduces cancer and kidney disease, but creates other problems

... to cartilage degeneration and impaired memory and learning ability, according to research at Wake Forest Univ...nd that growth-hormone-deficient rats had impaired learning ability compared to normal animals of the same age. A similar pattern occurred in memory tests. "Th...

Bird Brains Show How Trial and Error May Contribute to Learning

...improvisation arises from a component of a crucial learning circuit in a section of the forebrain that seems to generate the trial and error necessary to master sophisticated motor skills, such as singing in birds or speech and sports in humans. "It means this part of the brain is important for instructing o...

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

... preferences during childhood, a critical time for learning about food. Mennella comments, "Our previous studies focused on how early experience influences preferences for foods and flavors. Now, we have a tool to look at how experience and genetics interact in determining why we like the foods we do." Monel...

Genrate: a generative model that finds and scores new genes and exons in genomic microarray data

...DNA sequence data, so direct application of the EM learning algorithm produces poor results. We describe a novel way of parameterizing the model using examples from the data set, so that good solutions are found using an efficient algorithm. We apply GenRate to a subset of mouse genome-wide expression data th...

Rats infected as newborns grew up vulnerable to memory problems during an immune challenge

...disrupts the consolidation of memories following a learning experience. Thus it appears that there may be an optimal range for IL-1BETA, with either too much or too little inhibiting memory storage. Bilbo says, "The take-home message is that immune responses in a healthy brain are tightly regulated and contro...

Potential treatments for neurofibromatosis

...e of the spine (scoliosis), and in many instances, learning disorders. Occasionally, tumors may develop in the brain, on cranial nerves, or on the spinal cord. However, a rare form of the disease occurs in infants and young children, with tumors growing on major nerves, such as the sciatic nerve that connect...

Substance protects resilient staph bacteria

...A to promote resistance to innate immune defenses, learning more about the protein could lead to new treatments for S. epidermidis and related Staphylococcal pathogens that also produce PGA, according to the RML scientists. In addition, they also are hoping that similar research under way elsewhere on Bacillu...

Birds brains reveal source of songs

... The songbird's creative, trial-and-error type of learning provides an ideal model for studying similar proce...ved: a motor circuit for producing the song, and a learning circuit, called the AFP (for anterior forebrain pathway), that sends its output to the motor system....

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