News tagged with brain activity

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

A neural code for emotion

Our daily experience rides along the backdrop of a dynamic stream of mental states, characterized by spontaneous changes is mood or emotion. For instance, as you take an important exam and perform above expectations, your ...

Oct 17, 2016
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Infants use prefrontal cortex in learning

Researchers have long thought that the region of the brain involved in some of the highest forms of cognition and reasoning – the prefrontal cortex (PFC) – was too underdeveloped in young children, especially infants, ...

Oct 05, 2016
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How the brain consolidates memories during sleep

Researchers in the group of Prof Dr Nikolai Axmacher at the Ruhr-Universität Bochum (RUB) have studied which brain processes consolidate memories during sleep. They found clear parallels to findings from experimental animal ...

Oct 05, 2016
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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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