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Tag: "faces" at biology news

A frown or a smile? Children with autism can't discern

...imaging (fMRI), both groups were shown a series of faces depicting angry, fearful, happy and neutral expres...s, the eyes were averted; with the other half, the faces stared back at the children. With the typically developing group, the researchers found significa...

Traumas like Sept. 11 make brains more reactive to fear

...tric disorders. "We know that looking at fearful faces in normal adults tends to activate the amygdalae relative to looking at neutral faces," said Ganzel. "So we were looking to see if people who have had a very bad experience would have more response to this relatively mild everyday stimulus." Indeed...

Diminishing dinosaur steps saved by laser and laptop

...d firing laser beams, which reflect off the quarry faces back to a receiver. The device then cross references the reflections with a built-in digital camera and GPS, and feeds the information into an attached laptop. Software is then used to create a detailed and very accurate 3D computer model of the loca...

Mimicking how the brain recognizes street scenes

...lasses. For instance, systems engineered to detect faces or recognize textures are poor at detecting cars. In the biological model, the same algorithm can learn to detect widely different types of objects. To test the model, the team presented full street scenes consisting of previously unseen examples...

New study challenges 'critical period' in childhood vision development

...etween separate objects, determine depth, localize faces amongst a background of natural scenes, and match faces by their identity. This case demonstrated that a person can acquire visual function even after bein...

Is there a pilot in the insect?

... also observed on the microhelicopter each time it faces a laboratory-produced headwind, reinforcing the hypothesis that flying creatures have an optic flow regulator. The very simple control scheme proposed takes into account 70 years of often surprising observations of the behavior of winged insects. ...

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

...Riesenhuber. "It's like if a person had never seen faces before, they would all look similar at first." In the first experiment, the participants looked at series of cars presented at different parts of the screen and performed simple position judgments on the images, while their brain activity was bein...

Stem cell therapy shows promise for rescuing deteriorating vision

..., robbing people of the ability to read, recognize faces and live independently. The finding that the brain cells protected the cells in the eye was a surprise, according to Raymond D. Lund, an author of the new study and an eye disease expert at the University of Utah and the Oregon Health and Sciences...

A potential biological cause for sudden infant death syndrome

...d sleep. When babies sleep face-down or have their faces covered by bedding, they are thought to re-breathe exhaled carbon dioxide, therefore breathing in less oxygen. Normally, the rise in carbon dioxide activates nerve cells in the brainstem, which in turn stimulate respiratory and arousal centers in the...

Fishy cooperation

...perspective focused on the tasks that each species faces in nature. In this regard, these two reef predators show us that if it comes to survival, highly intelligent solutions are within the reach of animals as different from us as fish. (Watch a grouper signal to a giant moray eel resting in a cave by sha...

Coral stress 'like never in history'

...l reefs of the Huon Peninsula, which are now cliff faces rising up to 25 metres above the beach, A/Prof. Pandolfi and his team were able to see where large scale disturbances had occurred in the history of these reefs which dated back as far as 11 000 years ago. "The sequence of fossils is like a three ...

Emotional control circuit of brain's fear response discovered

... activity when people unconsciously detect fearful faces (to read the Columbia press release please click here: http://cumc.columbia.edu/news/press_releases/hirsch_kandel_etkin_anxiety_neuron.html ). "People are exposed to an ever increasing amount of stimuli in our everyday lives, and so we realized t...

Asia's odd-ball antelope gets collared

...ng decrease in saiga numbers. "Although Mongolia faces stiff conservation challenges as it transitions to a free-market economy, the saiga can easily emerge as a success story with a little scientific input and support for local communities" offers Joel Berger, project co-director and Senior Scientist wi...

Beauty and the brain

...990s, when people scored computer composites of 16 faces higher than any of the individual component faces (i.e. the very faces that had gone into creating the mathematically averaged image in the first plac...

Scientists solve 30-year-old mystery of mutant mouse's kidney woes

...entrated on the side of collection duct cells that faces the urine, where aqp2 can extract water from the waste stream for recirculation in the body. In the mutant mice, though, aqp2 was scattered around the collection duct cells. "The protein is still there, but it's not in the right place," Chen says. ...

Tests for 'face-blindness' reveal disorder may not be so rare

...these tests fail to recognize repetition among the faces in the series, even as they readily identify repea...gh research has confirmed that the brain processes faces differently than other kinds of objects. The condition can be embarrassing and lead to social isol...

Do angry men get noticed?

...ces, researchers have demonstrated that male angry faces are a priority for visual processing ?particularly...work, Williams and Mattingley show that angry male faces are found more rapidly than angry female faces by both men and women. In addition, men find angry fa...

Fertility hope as study shows eggs survive in older ovaries

...nditions," he said. One in six Australian couples faces some form of infertility. Due to the limitations and sensitivity of human ovaries, few studies have been conducted into the factors that influence egg survival, growth or death in relation to fertility. ...

Pure novelty spurs the brain

...this series four types of different, or "oddball," faces or scenes. One oddball was simply a different neutral image, one was a different image that required the researchers to press a button, one was an emotional image, and one was a distinctly novel image. In fMRI, harmless radio signals and magnetic fie...

MIT 'seeing machine' offers hope to blind

...hough not individual fingers. She cannot recognize faces or read. Subjects "had a wide range of cause for vision loss, including diabetic retinopathy, macular degeneration (the fastest growing cause of blindness), and visual field loss," said Cavallerano, a coauthor of the paper and another of Goldring's...

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(Date:4/18/2014)... PROVIDENCE, R.I. [Brown University] Asteroid and comet impacts ... animals on regional or even global scales. But new ... preserve the signatures of ancient life at the time ... Brown geologist Pete Schultz has found fragments of leaves ... a several ancient impacts in Argentina. The material could ...
(Date:4/17/2014)... trials to treat tuberculosis could be the basis for ... bacteria, fungal infections and parasites, yet evade resistance, according ... collaborators. , Led by U. of I. chemistry professor ... drug SQ109 attacks the tuberculosis bacterium, how the drug ... to malaria and how targeting multiple pathways reduces ...
(Date:4/17/2014)... April 17, 2014The development of stem cell therapies to ... to characterize stem cell populations based on cell surface ... a new marker that is highly expressed in a ... blood, which they describe in an article in ... Ann Liebert, Inc., publishers. The article is available free ...
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(Date:4/18/2014)... one of your worst memories? How did it make ... during a negative personal experience, such as how sad ... to emotional distress, especially when you can,t stop thinking ... up, thinking about the context of the memories, rather ... effective way to alleviate the negative effects of these ...
(Date:4/18/2014)... Fraser University psychologists have made a brain-related discovery ... attention-deficit disorders. , This discovery opens up the ... or suppress a specific brain activity that the ... , The Journal of Neuroscience has ... John McDonald, an associate professor of psychology and ...
(Date:4/18/2014)... . A ... A team led by Ludwik Leibler from the Laboratoire ... Letourneur from the Laboratoire Recherche Vasculaire Translationnelle (INSERM/Universits Paris ... principle of adhesion by aqueous solutions of nanoparticles can ... tissues. This easy-to-use gluing method has been tested on ...
(Date:4/17/2014)... in benign prostate tissue was associated with high-grade, ... found even in those with low prostate-specific antigen ... Cancer Epidemiology, Biomarkers & Prevention , a ... , An analysis of prostate tissue biopsies collected ... the Prostate Cancer Prevention Trial (PCPT) found that ...
(Date:4/17/2014)... first genetic variant specifically associated with the risk ... 10-15 per cent of all breast cancer cases. ... cancer sub-type, called invasive lobular carcinoma, gives researchers ... particular kind of breast cancer, which can be ... (Thursday) in the journal PloS Genetics , ...
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