Related topics: brain
Electroencephalography
hideElectroencephalography (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
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News tagged with brain activity
Scientists Shed New Light On Right Brain Activity
Medicine & Health / Neuroscience
Dec 16, 2009 |
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It’s a world first: thanks to new technology developed by the University of Victoria, Canada, researchers can now show how multiple parts of the right brain dynamically process spatial relationships.
Master gene Math1 controls framework for perceiving external and internal body parts
Dec 14, 2009 |
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Waking and walking to the bathroom in the pitch black of night requires brain activity that is both conscious and unconscious and requires a single master gene known as Math1 or Atoh1, said Baylor College of Medicine researchers ...
The Queen and I: How autistic brain distinguishes oneself from others
Medicine & Health / Neuroscience
Dec 14, 2009 |
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Scientists at the University of Cambridge have discovered that the brains of individuals with autism are less active when engaged in self-reflective thought. The study published today in the journal Brain provid ...
Brain activity exposes those who break promises
Medicine & Health / Neuroscience
Dec 09, 2009 |
2 / 5 (1) |
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Scientists from the University of Zurich have discovered the physiological mechanisms in the brain that underlie broken promises. Patterns of brain activity even enable predicting whether someone will break a promise. The ...
Epilepsy Patients Are Given New Hope With Brain Implant
Medicine & Health / Neuroscience
Dec 09, 2009 |
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(PhysOrg.com) -- A startup company, Neuropace in Mountain View Ca., has developed a device that offers new hope for epilepsy patients. The device is designed to neutralize the abnormal electrical activity ...
How to read brain activity?
Medicine & Health / Neuroscience
Dec 04, 2009 |
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(PhysOrg.com) -- For the very first time, scientists show what EEG can really tell us about how the brain functions.
Now you see it, now you know you see it
Medicine & Health / Neuroscience
Nov 30, 2009 |
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There is a tiny period of time between the registration of a visual stimulus by the unconscious mind and our conscious recognition of it ― between the time we see an apple and the time we recognize it as an apple. Our ...
Intel wants a chip implant in your brain
Nov 23, 2009 |
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(PhysOrg.com) -- Computer chip maker Intel wants to implant a brain-sensing chip directly into the brains of its customers to allow them to operate computers and other devices without moving a muscle.
Study uses brain scans to discover how children 'read' faces
Medicine & Health / Psychology & Psychiatry
Nov 20, 2009 |
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(PhysOrg.com) -- Oxford University scientists are using brain-scanning technology to understand how we learn to recognise and 'read' faces as children.
First-time Internet users find boost in brain function after just one week
Medicine & Health / Neuroscience
Oct 19, 2009 |
3.3 / 5 (4) |
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(PhysOrg.com) -- You can teach an old dog new tricks, say UCLA scientists who found that middle-aged and older adults with little Internet experience were able to trigger key centers in the brain that control ...
Action video game players experience diminished proactive attention
Medicine & Health / Psychology & Psychiatry
Oct 13, 2009 |
4.7 / 5 (3) |
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Video game players are often accused of passively reacting to tasks that are spoon fed to them through graphics and stimuli on the screen. A group of researchers from Iowa State University shows that playing lots of video ...
Scans show learning 'sculpts' the brain's connections
Medicine & Health / Neuroscience
Oct 09, 2009 |
4.8 / 5 (6) |
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Spontaneous brain activity formerly thought to be "white noise" measurably changes after a person learns a new task, researchers at Washington University School of Medicine in St. Louis and the University of Chieti, Italy, ...
Special brain wave boost slows motion
Medicine & Health / Neuroscience
Oct 01, 2009 |
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Researchers have found that they can make people move in slow motion by boosting one type of brain wave. The findings offer some of the first proof that brain waves can have a direct influence on behavior, ...
Babies see it coming
Medicine & Health / Psychology & Psychiatry
Sep 24, 2009 |
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Do infants only start to crawl once they are physically able to see danger coming? Or is it that because they are more mobile, they develop the ability to sense looming danger? According to Ruud van der Weel and Audrey van ...
Scientists develop novel use of neurotechnology to solve classic social problem
Medicine & Health / Neuroscience
Sep 10, 2009 |
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Economists and neuroscientists from the California Institute of Technology have shown that they can use information obtained through functional magnetic resonance imaging (fMRI) measurements of whole-brain activity to create ...
