Neuroscience

Scientists can see the bias in your brain

The strength of alpha brain waves reveals if you are about to make a biased decision, according to research recently published in JNeurosci.

Neuroscience

Binaural beats synchronize brain activity, don't affect mood

An auditory illusion thought to synchronize brain waves and alter mood is no more effective than other sounds, according to research in adults recently published in eNeuro. The effect reported in other studies might be a ...

Neuroscience

Overactive brain waves trigger essential tremor

The source of essential tremor—a movement disorder that causes involuntary trembling of the hands, arms, and head—has been enigmatic, impeding the development of effective treatments for a condition that affects 4% of ...

Neuroscience

Hearing through lip-reading

Brain activity synchronizes with sound waves, even without audible sound, through lip-reading, according to new research published in JNeurosci.

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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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