News tagged with computer
Sizing things up: The evolutionary neurobiology of scale invariance
(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 ...
Neuroscience
Feb 28, 2013 |
4.8 / 5 (10) |
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Step by step: Feature detection and combination in perceptual learning and object identification
(Medical Xpress)—The ease and immediacy with which we recognize familiar objects escapes our notice. However, a novel, ambiguous, or highly complex object requires practice to achieve such perceptual facility. ...
Neuroscience
Jan 11, 2013 |
3.7 / 5 (6) |
3
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Motion quotient: IQ predicted by ability to filter motion (w/ video)
A brief visual task can predict IQ, according to a new study. This surprisingly simple exercise measures the brain's unconscious ability to filter out visual movement. The study shows that individuals whose ...
Psychology & Psychiatry
May 23, 2013 |
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Neurons that can multitask greatly enhance the brain's computational power, study finds
Over the past few decades, neuroscientists have made much progress in mapping the brain by deciphering the functions of individual neurons that perform very specific tasks, such as recognizing the location ...
Neuroscience
May 20, 2013 |
4.9 / 5 (12) |
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Neuroscientists use statistical model to draft fantasy teams of neurons
This past weekend teams from the National Football League used statistics like height, weight and speed to draft the best college players, and in a few weeks, armchair enthusiasts will use similar measures ...
Neuroscience
Apr 29, 2013 |
4 / 5 (5) |
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'Clean' your memory to pick a winner, study says
Predicting the winner of a sporting event with accuracy close to that of a statistical computer program could be possible with proper training, according to researchers. In a study published today, experiment ...
Psychology & Psychiatry
Apr 22, 2013 |
4.8 / 5 (8) |
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Babies show visual consciousness at five months
(Medical Xpress)—A new study by scientists in France and Denmark has identified a neurological marker in the brain of babies as young as five months that is associated with visual consciousness, or the ...
Neuroscience
Apr 19, 2013 |
4.2 / 5 (5) |
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Whole genome sequencing finds new mutations to blame for a majority of brain tumor subtype
Washington University Pediatric Cancer Genome Project has identified mutations responsible for more than half of a subtype of childhood brain tumor that takes a high toll on patients. Researchers also found evidence the tumors ...
Genetics
Apr 14, 2013 |
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First objective measure of pain discovered in brain scan patterns
For the first time, scientists have been able to predict how much pain people are feeling by looking at images of their brains, according to a new study led by the University of Colorado Boulder.
Neuroscience
Apr 10, 2013 |
4 / 5 (6) |
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Could scientists peek into your dreams? (w/ video)
(HealthDay)—Talk about mind reading. Researchers have discovered a potential way to decode your dreams, predicting the content of the visual imagery you've experienced on the basis of neural activity recorded ...
Neuroscience
Apr 04, 2013 |
4.5 / 5 (11) |
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Comparing mouse and human immune systems: Few differences charted in map to translate mouse findings to humans
(Medical Xpress)—It is a familiar note struck when authors conclude their reports on experiments conducted in mouse models: They suggest caution when translating their findings from mouse to human. A variation ...
Medical research
Apr 02, 2013 |
4 / 5 (1) |
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Neuroscientists show how decision-making processes are influenced by neurons
Whether in society or nature, decisions are often the result of complex interactions between many factors. Because of this it is usually difficult to determine how much weight the different factors have in making a final ...
Neuroscience
Jan 15, 2013 |
3 / 5 (1) |
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Influenza virus: Being the most beneficial mutation is no guarantee of long-term genetic success, research finds
(Medical Xpress)—Wellcome Trust Sanger Institute scientists have used computer modelling to understand why some mutations in a virus gene rise to dominance and become 'fixed' in the genome of the virus, ...
Diseases, Conditions, Syndromes
Jan 03, 2013 |
4 / 5 (1) |
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Mind-controlled hand offers hope for the paralysed
Pentagon-backed scientists on Monday announced they had created a robot hand that was the most advanced brain-controlled prosthetic limb ever made.
Neuroscience
Dec 17, 2012 |
5 / 5 (2) |
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After 100 years, understanding the electrical role of dendritic spines
It's the least understood organ in the human body: the brain, a massive network of electrically excitable neurons, all communicating with one another via receptors on their tree-like dendrites. Somehow these ...
Neuroscience
Dec 05, 2012 |
4.5 / 5 (2) |
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Computer
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.
For more information about Computer, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
