Artificial neural networks that are inspired by natural nerve circuits in the human body give primates faster, more accurate control of brain-controlled prosthetic hands and fingers, researchers at the University of Michigan ...
Jan 17, 2023
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Imagine that you're late for work and desperately searching for your car keys. You've looked all over the house but cannot seem to find them anywhere. All of a sudden you realize your keys have been sitting right in front ...
Oct 7, 2020
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The brain has a remarkable ability to learn new cognitive tasks while maintaining previously acquired knowledge about various functions necessary for everyday life. But exactly how new information is incorporated into brain ...
Mar 5, 2012
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For decades, scientists have dreamed of building computer systems that could replicate the human brain’s talent for learning new tasks.
Nov 15, 2011
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There are many drugs that anesthesiologists can use to induce unconsciousness in patients. Exactly how these drugs cause the brain to lose consciousness has been a longstanding question, but MIT neuroscientists have now answered ...
Jul 15, 2024
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How does your brain know the position and movement of your different body parts? The sense is known as proprioception, and it is something like a "sixth sense," allowing us to move freely without constantly watching our limbs.
Mar 21, 2024
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From the very first weeks of life, countless connections are forged between neurons to ensure the propagation of nerve signals. These connections gradually shape the final architecture of the brain, known as the connectome. ...
Mar 8, 2024
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The waste system of living cells, the proteasome, not only shreds disused or damaged proteins, it also supports the immune system by recognizing virally infected or cancerous cells by producing protein fragments, so-called ...
Feb 14, 2024
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Cancer cells are notorious for rapidly changing their phenotype, driving within-host spread and evading treatment. Scientists in Plön have used a mathematical model to understand the role of a signal used by cancer cells ...
Oct 26, 2023
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When fighting disease, our immune cells need to reach their target quickly. Researchers at the Institute of Science and Technology Austria (ISTA) have now discovered that immune cells actively generate their own guidance ...
Sep 1, 2023
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A computer is a machine that manipulates data according to a set of instructions.
Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). These were the size of a large room, consuming as much power as several hundred modern personal computers (PCs). Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space. Simple computers are small enough to fit into a wristwatch, and can be powered by a watch battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". The embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are however the most numerous.
The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a certain minimum capability is, in principle, capable of performing the same tasks that any other computer can perform. Therefore computers ranging from a mobile phone to a supercomputer are all able to perform the same computational tasks, given enough time and storage capacity.
This text uses material from Wikipedia, licensed under CC BY-SA
