We may not realize it, but our eyes constantly make rapid movements—two to three per second—even when we're looking at the same spot. Yet despite these frequent eye movements, we still perceive what we see as a stable ...
Apr 29, 2024
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Listening to music benefits older adults' cognitive health, even if it's music they haven't heard before or don't enjoy very much, according to a study by Simon Fraser University and Health Research BC researchers.
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Protein imbalances that increase brain cell excitability may explain why individuals with Alzheimer's disease (AD) who also experience seizures demonstrate more rapid cognitive decline than those who do not experience seizures. ...
May 1, 2024
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America's young people face a mental health crisis, and adults constantly debate how much to blame phones and social media. A new round of conversation has been spurred by Jonathan Haidt's book "The Anxious Generation," which ...
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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.
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