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Select memories can be erased, leaving others intact

Different types of memories stored in the same neuron of the marine snail Aplysia can be selectively erased, according to a new study by researchers at Columbia University Medical Center (CUMC) and McGill University. The findings suggest that it may be possible to develop drugs to delete memories that trigger anxiety and post-traumatic stress disorder…

Cancer cells may streamline their genomes in order to proliferate more easily

Research from the Stowers Institute provides evidence suggesting that cancer cells might streamline their genomes in order to proliferate more easily. The study, conducted in both human and mouse cells, shows that cancer genomes lose copies of repetitive sequences known as ribosomal DNA. While downsizing might enable these cells to replicate faster, it also seems…

Ultra-thin camera creates images without lenses

Traditional cameras  even those on the thinnest of cell phones — cannot be truly flat due to their optics: lenses that require a certain shape and size in order to function. At Caltech, engineers have developed a new camera design that replaces the lenses with an ultra-thin optical phased array (OPA). The OPA does computationally…

Quasiparticles that could lead to faster circuits, higher bandwidths, imaged

Zhe Fei pointed to the bright and dark vertical lines running across his computer screen. This nano-image, he explained, shows the waves associated with a half-light, half-matter quasiparticle moving inside a semiconductor. “These are waves just like water waves,” said Fei, an Iowa State University assistant professor of physics and astronomy and an associate of…

A stream of superfluid light

Scientists have known for centuries that light is composed of waves. The fact that light can also behave as a liquid, rippling and spiraling around obstacles like the current of a river, is a much more recent finding that is still a subject of active research. The “liquid” properties of light emerge under special circumstances,…

Control of material crystallization by agitation

  The transition of unstructured amorphous materials into structured crystalline materials is generally induced by heating materials above their transition temperature. Crystalline materials are important in technology like devices, so alternative ways to control their formation has attracted much interest from materials scientists. Researchers have found that crystallization can be facilitated at a lower temperature…

Scientists try to crack the brain’s memory codes

In a pair of studies, scientists at the National Institutes of Health explored how the human brain stores and retrieves memories. One study suggests that the brain etches each memory into unique firing patterns of individual neurons. Meanwhile, the second study suggests that the brain replays memories faster than they are stored. The studies were…

Emotions expressed by the dying are unexpectedly positive

A computer’s ability to predict a patient’s lifespan simply by looking at images of their organs is a step closer to becoming a reality, thanks to new research led by the University of Adelaide. Researchers from the University’s School of Public Health and School of Computer Science, along with Australian and international collaborators, used artificial…

Neuroscientists rewire brain of one species to have connectivity of another

Scientists at Georgia State University have rewired the neural circuit of one species and given it the connections of another species to test a hypothesis about the evolution of neural circuits and behavior. Neurons are connected to each other to form networks that underlie behaviors. Drs. Akira Sakurai and Paul Katz of Georgia State’s Neuroscience…

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