Medical research

Could sound waves bring us smarter medical implants?

Pinned to a wall in Tommaso Melodia's office, next to a stack of wireless technology guidebooks, is a child's illustration: a smiling heart symbol alongside the word "Papa." His office is covered with drawings like these, ...

Neuroscience

Rhythmic control of 'brain waves' can boost memory: study

Controlling the frequency of 'brain waves' could help to improve people's recall of memories and potentially provide a key to unlock conditions such as Alzheimer's disease, according to a new article.

Neuroscience

Why visual stimulation may work against Alzheimer's

Several years ago, MIT neuroscientists showed that they could dramatically reduce the amyloid plaques seen Alzheimer's disease in mice simply by exposing the animals to light flickering at a specific frequency.

Neuroscience

Want to learn a new skill? Take some short breaks

In a study of healthy volunteers, National Institutes of Health researchers found that our brains may solidify the memories of new skills we just practiced a few seconds earlier by taking a short rest. The results highlight ...

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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.

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