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
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with brain activity
Intel wants a chip implant in your brain
Nov 23, 2009 |
4.4 / 5 (34) |
49
(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.
Now you see it, now you know you see it
Medicine & Health / Neuroscience
Nov 30, 2009 |
4.8 / 5 (6) |
2
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 ...
How to read brain activity?
Medicine & Health / Neuroscience
14 hours ago |
3.8 / 5 (5) |
0
(PhysOrg.com) -- For the very first time, scientists show what EEG can really tell us about how the brain functions.
Study uses brain scans to discover how children 'read' faces
Medicine & Health / Psychology & Psychiatry
Nov 20, 2009 |
not rated yet |
1
(PhysOrg.com) -- Oxford University scientists are using brain-scanning technology to understand how we learn to recognise and 'read' faces as children.
Search results for brain activity
Scientists identify strategies to protect new brain cells against Alzheimer's disease
Dec 03, 2009 |
not rated yet |
0
Stimulating the growth of new neurons to replace those lost in Alzheimer's disease (AD) is an intriguing therapeutic possibility. But will the factors that cause AD allow the new neurons to thrive and function normally? Scientists ...
Study explains how exercise helps patients with peripheral artery disease
Dec 03, 2009 |
5 / 5 (2) |
2
Peripheral artery disease (PAD) affects 5 million individuals in the U.S. and is the leading cause of limb amputations. Doctors have long considered exercise to be the single best therapy for PAD, and now a new study helps ...
Mathematical model of a simple circuit in a chicken brain raises fundamental questions
Dec 01, 2009 |
4.8 / 5 (25) |
15
(PhysOrg.com) -- The Web site Neuroanthropology asks visitors to complete this quote, "One of the difficulties in understanding the brain is ...". In addition to the typical facetious remarks, such as "so ...
Scientists reveal malaria parasites' tactics for outwitting our immune systems
Nov 30, 2009 |
4.8 / 5 (4) |
1
Malaria parasites are able to disguise themselves to avoid the host's immune system, according to research funded by the Wellcome Trust and published today in the journal Proceedings of the National Academy of ...
Research sheds new light on epilepsy
Nov 30, 2009 |
5 / 5 (1) |
1
Pioneering research using human brain tissue removed from people suffering from epilepsy has opened the door to new treatments for the disease.
Montreal Heart Institute performs its first implant of new prosthesis for cardiac arrhythmia
Nov 30, 2009 |
not rated yet |
0
A multidisciplinary team from the Montreal Heart Institute (MHI), which is affiliated to the Université de Montréal, performed its first catheter implantation of a new prosthesis (Amptlazer Cardiac Plug) closing ...
Brain Scan Study Shows Cocaine Abusers Can Control Cravings
Nov 30, 2009 |
5 / 5 (1) |
0
(PhysOrg.com) -- When asked to inhibit their response to a "cocaine-cues" video, active cocaine abusers were, on average, able to suppress activity in brain regions linked to drug craving, according to a new ...
Girl's progress after pioneering brain surgery gives hope to other parents
Nov 26, 2009 |
5 / 5 (4) |
0
Lexi Haas is awakening into a world of new possibilities. Miracle by tiny miracle, she is making her body do what she wants -- instead of her body always controlling her. She looked up at her mother a few weeks ago, pursed ...
An end to sleep problems? Researchers discover enzyme behind effects of sleep deprivation
Nov 26, 2009 |
4 / 5 (1) |
0
There is hope for those who miss one night too many or whose children keep them up at night. The unwelcome effects of a bad night's sleep - forgetfulness, impaired mental performance - can be dealt with by reducing the concentration ...
Crosstalk between critical cell-signaling pathways holds clues to tumor invasion and metastasis
Nov 25, 2009 |
not rated yet |
0
Two signaling pathways essential to normal human development - the Wnt/Wingless (Wnt) and epidermal growth factor receptor (EGFR) pathways - interact in ways that can promote tumor cell invasion and metastasis, researchers ...
List of search results for brain activity
