News tagged with brain waves
Wireless signals could transform brain trauma diagnostics
New technology developed at the University of California, Berkeley, is using wireless signals to provide real-time, non-invasive diagnoses of brain swelling or bleeding.
Neuroscience
May 14, 2013 |
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Rats' and bats' brains work differently on the move
A new study of brain rhythms in bats and rats challenges a widely used model - based on studies in rodents - of how animals navigate their environment. To get a clearer picture of the processes at work in ...
Neuroscience
Apr 18, 2013 |
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Research shows brain more flexible, trainable than previously thought
Opening the door to the development of thought-controlled prosthetic devices to help people with spinal cord injuries, amputations and other impairments, neuroscientists at the University of California, Berkeley, ...
Neuroscience
Mar 04, 2012 |
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Brain rhythms are key to learning
Neuroscientists have long known of the existence of brain waves — rhythmic fluctuations of electrical activity believed to reflect the brain’s state. For example, during rest, brain activity slows ...
Neuroscience
Sep 27, 2011 |
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Engineers use short ultrasound pulses to reach neurons through blood-brain barrier
Columbia Engineering researchers have developed a new technique to reach neurons through the blood-brain barrier (BBB) and deliver drugs safely and noninvasively. Up until now, scientists have thought that long ultrasound ...
Medical research
Sep 19, 2011 |
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Scientists probe the source of a pulsing signal in the sleeping brain
New findings clarify where and how the brain's "slow waves" originate. These rhythmic signal pulses, which sweep through the brain during deep sleep at the rate of about one cycle per second, are assumed ...
Neuroscience
Apr 18, 2013 |
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Poor sleep in old age prevents the brain from storing memories
The connection between poor sleep, memory loss and brain deterioration as we grow older has been elusive. But for the first time, scientists at the University of California, Berkeley, have found a link between these hallmark ...
Neuroscience
Jan 27, 2013 |
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Researchers devise a way to manipulate a rat's dreams
(Medical Xpress)—Cognitive scientists working at MIT have devised a means for not only altering the dreams of rats, but of demonstrating a way of testing what they've achieved, offering evidence that it can ...
Neuroscience
Sep 06, 2012 |
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Neuroprosthesis gives rats the ability to 'touch' infrared light
Researchers have given rats the ability to "touch" infrared light, normally invisible to them, by fitting them with an infrared detector wired to microscopic electrodes implanted in the part of the mammalian brain that processes ...
Neuroscience
Feb 12, 2013 |
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Common nutritional supplement offers promise in treatment of unique form of autism with epilepsy
An international team of researchers, led by scientists at the University of California, San Diego and Yale University schools of medicine, have identified a form of autism with epilepsy that may potentially be treatable ...
Autism spectrum disorders
Sep 06, 2012 |
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Sleep study reveals how the adolescent brain makes the transition to mature thinking
(Medical Xpress)—A new study conducted by monitoring the brain waves of sleeping adolescents has found that remarkable changes occur in the brain as it prunes away neuronal connections and makes the major ...
Neuroscience
Mar 19, 2013 |
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Brain does not process sensory information sufficiently, research team discovers
(Medical Xpress)—The reason why some people are worse at learning than others has been revealed by a research team from Berlin, Bochum, and Leipzig, operating within the framework of the Germany-wide network ...
Neuroscience
Feb 13, 2013 |
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Neuroscientists link brain-wave pattern to energy consumption
Different brain states produce different waves of electrical activity, with the alert brain, relaxed brain and sleeping brain producing easily distinguishable electroencephalogram (EEG) patterns. These patterns ...
Neuroscience
Feb 08, 2012 |
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Brain's code for visual working memory deciphered in monkeys
The brain holds in mind what has just been seen by synchronizing brain waves in a working memory circuit, an animal study supported by the National Institutes of Health suggests. The more in-sync such electrical ...
Neuroscience
Nov 02, 2012 |
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Scientists in sleep-wake tests decode dreams
What's in a dream? For Yukiyasu Kamitani, the question is important. He has been testing how dreams relate to brain activity and what really is the function of dreaming, He leads a team of researchers at the ATR Computational ...
Neuroscience
Oct 29, 2012 |
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Electroencephalography
Electroencephalography (EEG) is the recording of electrical activity along the scalp produced by the firing of neurons within the brain. In clinical contexts, EEG refers to the recording of the brain's spontaneous electrical activity over a short period of time, usually 20–40 minutes, as recorded from multiple electrodes placed on the scalp. In neurology, the main diagnostic application of EEG is in the case of epilepsy, as epileptic activity can create clear abnormalities on a standard EEG study. A secondary clinical use of EEG is in the diagnosis of coma and encephalopathies. EEG used to be a first-line method for the diagnosis of tumors, stroke and other focal brain disorders, but this use has decreased with the advent of anatomical imaging techniques such as MRI and CT.
Derivatives of the EEG technique include evoked potentials (EP), which involves averaging the EEG activity time-locked to the presentation of a stimulus of some sort (visual, somatosensory, or auditory). Event-related potentials refer to averaged EEG responses that are time-locked to more complex processing of stimuli; this technique is used in cognitive science, cognitive psychology, and psychophysiological research.
For more information about Electroencephalography, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
