News tagged with brain activity

Related topics: brain · functional magnetic resonance imaging · brain regions · brain function · brain images

Exercise to change the brain

For someone with Parkinson's disease (PD), the simple desire to grasp a glass of water can become an insurmountable task, made impossible by the tremors in their hand or arm. Finding strategies to improve these movement impairments ...

20 hours ago
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Hope for new treatment of severe epilepsy

Researchers at Lund University in Sweden believe they have found a method that in the future could help people suffering from epilepsy so severe that all current treatment is ineffective. "In mice studies, we succeeded in ...

Apr 17, 2018
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Early environment may shape axon pathfinding

A new mechanism regulating the early development of connections between the two sides of the nervous system has been identified in a paper published in eNeuro. The work demonstrates that neuronal activity is required for ...

Apr 16, 2018
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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.

This text uses material from Wikipedia, licensed under CC BY-SA

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