News tagged with electroencephalogram
EEG identifies seizures in hospital patients, study finds
Electroencephalogram (EEG), which measures and records electrical activity in the brain, is a quick and efficient way of determining whether seizures are the cause of altered mental status (AMS) and spells, according to a ...
Neuroscience
Mar 27, 2013 |
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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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How the brain loses and regains consciousness (w/ video)
Since the mid-1800s, doctors have used drugs to induce general anesthesia in patients undergoing surgery. Despite their widespread use, little is known about how these drugs create such a profound loss of ...
Neuroscience
Mar 04, 2013 |
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Seizures in half peds patients with intracranial hemorrhage
(HealthDay)—Acute symptomatic seizures occur in about half of pediatric patients with intracerebral hemorrhage (ICH) and are often a presenting symptom, according to a study published online Feb. 7 in JAMA Ne ...
Neuroscience
Feb 08, 2013 |
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Researcher expects improvements to epilepsy diagnosis and prevention of life-threatening seizures
(Medical Xpress)—The electroencephalogram (EEG) for human uses has been around since 1924. Small metal discs placed along the scalp measure electrical activity in the human brain, important in diagnosing ...
Neuroscience
Dec 21, 2012 |
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Mu-rhythm in the brain: The neural mechanism of speech as an audio-vocal perception-action system
The cortical mechanisms governing speech are not well understood because it is extremely challenging to measure the activity of the brain in action, that is, during speech production. Researchers in Japan ...
Neuroscience
Dec 05, 2012 |
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Surprising results from study of non-epileptic seizures
A Loyola University Medical Center neurologist is reporting surprising results of a study of patients who experience both epileptic and non-epileptic seizures.
Neuroscience
Dec 02, 2012 |
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The beat goes in the brain: Visual system can be entrained to future events
(Medical Xpress)—Like a melody that keeps playing in your head even after the music stops, researchers at the University of Illinois's Beckman Institute have shown that the beat goes on when it comes to ...
Neuroscience
Aug 28, 2012 |
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Global study shows brain damage from stroke can be minimised
(Medical Xpress) -- A new study from The University of Queensland shows monitoring the brain of stroke patients using Quantitative EEG (QEEG) studies could inform treatments and therefore, minimising brain damage of stroke ...
Neuroscience
Aug 13, 2012 |
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Study detects 'chemobrain' in EEG activity
A Cleveland Clinic study has detected significant changes in the electroencephalogram (EEG) brain activity patterns of patients receiving chemotherapy.
Cancer
Jun 04, 2012 |
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Ability to remember memories' origin not fully developed in youths
During childhood and adolescence, children develop the ability to remember not only past events but the origin of those memories. For example, someone may remember meeting a particular person and the context in which he or ...
Psychology & Psychiatry
Aug 30, 2011 |
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New test may help distinguish between vegetative and minimally conscious state
(PhysOrg.com) -- In a new study published in Science, researchers from the University of Liege in Belgium, led by Dr. Melanie Boly, share the discovery of a new test that could aid physicians in differentiating betwee ...
Neuroscience
May 13, 2011 |
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Electroencephalography
Electroencephalography (EEG) is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of 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, encephalopathies, and brain death. 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 with high (<1 mm) spatial resolution like as MRI and CT. Despite limited spatial resolution, EEG continues to be a valuable tool for research and diagnosis, especially when millisecond-range temporal resolution (not possible with CT or MRI) is required.
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 (ERPs) 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.
