In 1968, the Canadian psychologist from McGill University Ronald Melzack described pain as being multidimensional and complex, with sensory-discriminative, affective-motivational and cognitive-evaluative components . Such definition may be a hint as to why the biological meaning of pain has been an (to date) unceasing matter of debate since Aristotle, who thought pain is just a […]
Humanities & Social Sciences • Science • Technology • Weekly Selection
Rhesus monkeys can be taught to recognize their images in mirrors Mirror recognition can be taught to rhesus monkeys, according to researchers who say the findings could help them better understand how self-awareness develops in the brain. “Our findings suggest that the monkey brain has the basic ‘hardware’ [for mirror self-recognition], but they need appropriate […]
In the 1930s Clive McCay, a biochemist working in Ithaca, New York, made an interesting observation: rats that were kept on a low calorie diet lived longer than rats that had unrestrained access to food. In the next years this seemingly counterintuitive observation was extended to virtually all animals, including worms, flies and other rodents […]
Although pretty much unknown for the public audience, Supergravity theories play an important role in modern Theoretical Physics, specially for the particle physics and (Super)String Theory communities . Loosely speaking, Supergravity is a theory that describes gravity along with other fundamental particles and interactions in such a way that the whole structure is symmetric under […]
The Rosetta mission from the European Space Agency is arguably one of the most successful highlights of 2014. Even though the Philae lander did not have the placid flight we all would like it to have, the team managed to fulfill most of its scientific goals before the batteries get exhausted and there is still […]
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Researchers develop memory system with 900+ neurons, 165K synapses Researchers at IBM’s Almaden Research Center and South Korea’s Pohang University of Science and Technology have developed a phase-change memory chip with more than 900 neurons and 165,000 synapses that can emulate how the human brain functions, promising to advance image-recognition technology and other areas of […]
Diabetes is becoming a huge problem in our society, affecting nowadays one in every 20 people in this planet. Although some people don’t know, diabetes is a very serious disease that can cause damage in the heart, blood vessels, eyes, kidneys and nerves, producing different neuropathies, kidney failures, blindness and increasing in the risk of […]
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Last week we knew the ten most read articles during 2014. Using the number of hits a post receives is an objective way of pinpointing some of the outstanding publications of the year. But it could be argued that some excellent, quality posts would not appear in this short list, and this is precisely true […]
Human primordial germ cells created in a lab Scientists have found a way to create human primordial germ cells, or PGCs, in a lab. The research stresses they are significantly different than those of mice, calling into question the efficacy of mouse experiments as related to human cell development. Scientists reprogrammed human embryonic stem cells […]
As a professor in Statistics, reports on sexual activity provide a wide source of ideas to make proposals for students in which they have to apply statistical knowledge. Moreover, since the interpretations can be very funny and interesting, my hope is that they will never forget what they have learned. Here is a very simple […]