The Future Is Here Today...Robots, Genetics, AI, Longevity, Singularity

New Study Shows Your Ability To Recognize Faces is Genetic

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by Aaron Saenz on March 12th, 2010

Scientists at the University College of London, Harvard University, and elsewhere have discovered that not only is the part of your brain responsible for recognizing faces different than the part that recognizes words or art, it is highly effected by your genes. Dr. Brad Duchaine (UCL) and colleagues studied nearly 300 twins (identical and fraternal) by giving them a series of recognition tests. On the Cambridge Face Memory Test (CFMT), identical twins had scores that correlated very well – 0.7, while non-identical twins had a much lower correlation – 0.29. Similar tests for word and abstract art recognition did not show such high correlations. According to their paper published in PNAS, researchers think facial recognition is an unusual phenomenon, a “highly specific cognitive ability that is highly heritable.” This research could lead to a search for those facial recognition genes, possibly in pursuit of a treatment for prosopagnosia and related conditions. Just as importantly, it sheds light on how our genes shape our brain mechanisms, and how we might be able to alter/improve those mechanisms through genetic manipulation.

CFMT sample

Which of the faces on the right match the one on the left? Questions like this helped researchers determine that you inherit your ability to accuractely recognize faces.

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Recording the Entire Life of an Animal

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by Aaron Saenz on February 2nd, 2010
c. elegans worm

Work at Harvard University will allow scientists to observe the entire lifespan of worms. Humans could be in the far future.

The lessons of a lifetime are powerful, even if that life belongs to a worm. Harvard scientists have developed a microfluidics system so that they can observe the entire lifespan of minute water born animals . These researchers hope their observation will provide important insight into the effects of aging, and diseases like Parkinson’s and Alzheimer’s. According to a paper published on RSC, the microfluidics system allows the Caenorhabditis elegans worms to move as normal without leaving the field of view of cameras and microscopes. Their microfludic cells are sort of the worm equivalent of virtual reality treadmills. Food (in the form of bacteria) comes in, waste is removed, and the worm can swim around. There’s even a special suction system (developed by other teams) to temporarily secure the C. elegans and facilitate close observation or laser microsurgery. The microfluidics system has many different chambers so that a large number of worms can be observed while still tracking the individual identity of each one. In short, Harvard’s created a means to completely observe the entire life of an animal, and it may lead to some remarkable insights in biology.

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Harvard Grows Heart Tissue, Watches it Beat

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by Aaron Saenz on November 3rd, 2009
By color coding stem cells, reserachers were able to isolate those that would form different parts of the heart.

By color-coding stem cells, reserachers isolated those that would form different parts of the heart.

It’s Alive! Researchers at Harvard University and Massachusetts General Hospital have succeeded in taking embryonic stem cells from mice and growing cardiovascular tissue. The research team, led by Dr. Kenneth Chien, believes that a similar process may one day serve to repair cardiac damage in humans. The work was recently published in the journal Science. You can see the mouse heart cells beating at different speeds in the video from Boston.com after the break.

Cardiac injury is some of the most difficult damage to heal in the body. When the heart undergoes massive damage from a coronary, you have few options – replace broken parts, add a pacemaker, or get a whole new heart. The work done by Chien and his team focuses on creating a new way to repair tissue damage. Instead of adding in mechanical parts, or finding a donor organ, stem cells may be used to replace and heal the damaged cardiac tissue. Eventually, those patients that develop a myocardial injury could have pluripotent stem cells harvested from their skin, marrow, or fat which would then be introduced into the heart via injection. No open heart surgery, no pacemakers, just stem cells and a needle.

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