News tagged with brain activity
Brain uses internal 'average voice' prototype to identify who is talking
(Medical Xpress)—The human brain is able to identify individuals' voices by comparing them against an internal 'average voice' prototype, according to neuroscientists.
Neuroscience
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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Depression linked to telomere enzyme, aging, chronic disease
(Medical Xpress)—The first symptoms of major depression may be behavioral, but the common mental illness is based in biology—and not limited to the brain.
Psychology & Psychiatry
May 23, 2013 |
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Driving and hands-free talking lead to spike in errors, study shows
Talking on a hands-free device while behind the wheel can lead to a sharp increase in errors that could imperil other drivers on the road, according to new research from the University of Alberta.
Health
May 24, 2013 |
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New imaging techniques used to help patients suffering from epilepsy
New techniques in imaging of brain activity developed by Jean Gotman, from McGill University's Montreal Neurological Institute, and his colleagues lead to improved treatment of patients suffering from epilepsy. The combination ...
Neuroscience
May 23, 2013 |
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Waiting for a sign? Researchers find potential brain 'switch' for new behavior
You're standing near an airport luggage carousel and your bag emerges on the conveyor belt, prompting you to spring into action. How does your brain make the shift from passively waiting to taking action when ...
Neuroscience
May 21, 2013 |
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Body clocks of depressed people altered at cell level, researchers show
Every cell in our bodies runs on a 24-hour clock, tuned to the night-day, light-dark cycles that have ruled us since the dawn of humanity. The brain acts as timekeeper, keeping the cellular clock in sync ...
Medical research
May 13, 2013 |
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Melon focus headband turns to Kickstarter for rollout plans
(Medical Xpress)—What if the quality of your work depends more on your focus on the piano keys or canvas or laptop than your musical or painting or computing skills? If target users can be convinced, they ...
Neuroscience
May 17, 2013 |
3.7 / 5 (3) |
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Hit a 95 mph baseball? Scientists pinpoint how we see it coming
(Medical Xpress)—How does San Francisco Giants slugger Pablo Sandoval swat a 95 mph fastball, or tennis icon Venus Williams see the oncoming ball, let alone return her sister Serena's 120 mph serves? For ...
Neuroscience
May 08, 2013 |
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Grammar errors? The brain detects them even when you are unaware
Your brain often works on autopilot when it comes to grammar. That theory has been around for years, but University of Oregon neuroscientists have captured elusive hard evidence that people indeed detect ...
Neuroscience
May 13, 2013 |
4 / 5 (4) |
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For combat veterans suffering from post-traumatic stress disorder, 'fear circuitry' in the brain never rests
Chronic trauma can inflict lasting damage to brain regions associated with fear and anxiety. Previous imaging studies of people with post-traumatic stress disorder, or PTSD, have shown that these brain regions can over-or ...
Neuroscience
May 18, 2013 |
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Off the grid: Environmental novelty changes hippocampal firing patterns
(Medical Xpress)—The brain's two hippocampal formations – one in each hemisphere's temporal lobe, medial to the inferior horn of the lateral ventricle and typically referring to the dentate gyrus, the ...
Neuroscience
Nov 07, 2012 |
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Scientists reveal drinking champagne could improve memory
(Medical Xpress)—New research shows that drinking one to three glasses of champagne a week may counteract the memory loss associated with ageing, and could help delay the onset of degenerative brain disorders, ...
Health
May 08, 2013 |
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Clouds in the head
Many brain researchers cannot see the forest for the trees. When they use electrodes to record the activity patterns of individual neurons, the patterns often appear chaotic and difficult to interpret.
Neuroscience
May 21, 2013 |
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Do brain cells need to be connected to have meaning?
(Medical Xpress)—The classic theory of the brain is one of connections, in which the brain consists of a network of neurons that interact with each other to allow us to think, see, interpret, and understand ...
Neuroscience
Dec 04, 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.
