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Tag: "learns" at biology news

Birds brains reveal source of songs

...uestion we're trying to answer is how a young bird learns its song," says Professor Michale Fee of MIT's McG...ning in midstream. The bird still sings, but never learns the right song. To explain this effect, scientists theorized that the AFP circuit helps the juvenile...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

...us a lot to think about how the normal human brain learns and remembers and functions in general," Brown added. Love physiology changes over time; 'Romantic love more powerful than sex' Another breakthrough, Brown noted, was that "we found several brain areas where the strength of neural activity changed ...

Understanding how bacteria communicate may help scientists prevent disease

... to be a universal process in bacteria. So what he learns about the communication process known as quorum sensing could one day help scientists prevent a broad range of diseases caused by bacteria that are human pathogens. How do bacteria know how many are present? Each bacterium releases a small molecule,...

First demonstration of 'teaching' in non-human animals

...y a follower. But the benefit is that the follower learns where the food is much quicker than it would have done independently. Tandem followers learn their lessons so well that they often become tandem leaders and in this way time-saving information flows through the ant colony. Richardson added: "This b...

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

...ime, von Andrian said. "It's nice that the T cell learns to recognize the antigen, but that doesn't get rid of the microbe that has entered the body," von Andrian said. He traced the path of the educated T cells leaving the lymph node, when they become known as effector cells. In addition, von Andrian addr...

Everything in its place: Researchers identify brain cells used to categorize images

...ietal cortex is a part of the brain circuitry that learns and recognizes the meaning of the things that we s...tion-directions, less is known about how the brain learns and recognizes the meaning of stimuli. The process of grouping related visual images into categories...

Robotic joystick reveals how brain controls movement

...e joystick, the predictions suggest that the brain learns muscle control using at least two different steps. First, the computer programs were able to tease out that the brain picked up the control task quickly, but actually forgot the task quickly as well. But, at the same time, the brain also was learni...

New approach to vaccine development provides potent, long-lasting immunity

...e joystick, the predictions suggest that the brain learns muscle control using at least two different steps. First, the computer programs were able to tease out that the brain picked up the control task quickly, but actually forgot the task quickly as well. But, at the same time, the brain also was learni...

Flick of whiskers helps tease out brain's 'shadow' signaling system

...ientists have found that the way an animal's brain learns information from its whiskers mirrors the way people learn from their senses. Wang and Nedergaard found that with a puff of air on a whisker, astrocytes become activated ?pumped with calcium ?in the section of the brain that processes sensory input....

Researchers identify neurons that assign value during learning

...ior. For example, if an animal such as a fruit fly learns to associate a particular odor with a punishing stimulus, the odor itself can become repulsive. Conversely, an odor associated with a reward can become attractive. Despite its relatively modest brain complexity, the fruit fly larva is able to perform...

Studies yield insight into the numerical brain

...gs offer insight into the mystery of how the brain learns to associate abstract symbols precisely with quant...ed that their findings shed light on how the brain learns to associate symbols with numbers. "Our results show that, at least in the adult brain, numerical ...

Using brain scans, researchers find evidence for a two-stage model of human perceptual learning

...man evidence for a two-stage model of how a person learns to place objects into categories ?discerning, for example, that a green apple, and not a green tennis ball, belongs to "food." They describe it as a complex interplay between neurons that process stimulus shape ("bottom-up") and more sophisticated b...

New study challenges 'critical period' in childhood vision development

Understanding how the human brain learns to perceive objects is one of the ultimate challenges in neuroscience. In 2003, Pawan Sinha, a professor at the Massachusetts Institute of Technology, launched an initiative with the hopes of shedding some light on the acquisition of visual skills. ...

Turn-ons and turn-offs for neurons

...on” or “off” play an essential role when our brain learns and stores information, and when our brain reacts to injury and disease. ...

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