The bacterial pathogen that causes tuberculosis is a master of deception, a king of clever tricks—an enemy agent that not only infiltrates but can become a long-term stowaway in patients' lungs.
(Medical Xpress)—Visual perception is far more complex and powerful than our experience suggests. Moreover, in attempting to both understand vision and implement it in a computational device, the fact that a species' senses ...
What role do the stages of sleep play in forming memories? "We've known for a long time that useful learning happens during sleep," says University of Pennsylvania neuroscientist Anna Schapiro. "You encode new experiences ...
Oct 24, 2022
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Tissue engineered vascular grafts (TEVGs) can advance surgical management of infants and children who require congenital heart surgery, by creating functional vascular conduits with growth capacity. In a new report now published ...
Mind wandering occurs when a person's attention shifts from things that are happening in her present environment to internal thought processes. For instance, while cooking or attending a lesson, one might start thinking about ...
To adapt to their environment and learn from past experiences, animals need to learn to associate stimuli in their environment (e.g., a particular sound or scent) and the rewards or threats that these stimuli are likely to ...
Scientists at Harvard University and the Broad Institute's Stanley Center for Psychiatric Research have made a major advance in the development of human brain 'organoids': miniature, 3-D tissue cultures that model a patient's ...
Jun 5, 2019
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As visual information flows into the brain through the retina, the visual cortex transforms the sensory input into coherent perceptions. Neuroscientists have long hypothesized that a part of the visual cortex called the inferotemporal ...
Mar 14, 2019
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Rather than taking medication, a growing number of people who suffer from chronic pain, epilepsy and drug cravings are zapping their skulls in the hopes that a weak electric current will jolt them back to health.
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(Medical Xpress)—A team of researchers in Germany has created a very highly detailed 3D computer model of an individual rat synapse showing the distribution of approximately 30,000 proteins involved in the process of sending ...
A computer simulation, a computer model or a computational model is a computer program, or network of computers, that attempts to simulate an abstract model of a particular system. Computer simulations have become a useful part of mathematical modeling of many natural systems in physics (computational physics), chemistry and biology, human systems in economics, psychology, and social science and in the process of engineering new technology, to gain insight into the operation of those systems, or to observe their behavior.
Computer simulations vary from computer programs that run a few minutes, to network-based groups of computers running for hours, to ongoing simulations that run for days. The scale of events being simulated by computer simulations has far exceeded anything possible (or perhaps even imaginable) using the traditional paper-and-pencil mathematical modeling: over 10 years ago, a desert-battle simulation, of one force invading another, involved the modeling of 66,239 tanks, trucks and other vehicles on simulated terrain around Kuwait, using multiple supercomputers in the DoD High Performance Computer Modernization Program; a 1-billion-atom model of material deformation (2002); a 2.64-million-atom model of the complex maker of protein in all organisms, a ribosome, in 2005; and the Blue Brain project at EPFL (Switzerland), began in May 2005, to create the first computer simulation of the entire human brain, right down to the molecular level.
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