brainwave

PRIMARY MEANINGS OF: brainwave

1	n	the clear (and often sudden) understanding of a complex situation
2	n	(neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph

FULL DEFINITIONS OF: brainwave

Types:: show 4 types...; hide 4 types...; light
mental understanding as an enlightening experience; revelation
an enlightening or astonishing disclosure; breakthrough, discovery, find
a productive insight; flash
a sudden brilliant understanding

Type of:: apprehension, discernment, savvy, understanding
the cognitive condition of someone who understands

Types:: show 4 types...; hide 4 types...; alpha rhythm, alpha wave
the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz; beta rhythm, beta wave
the normal brainwave in the encephalogram of a person who is awake and alert; occurs with a frequency between 12 and 30 hertz; delta rhythm, delta wave
the normal brainwave in the encephalogram of a person in deep dreamless sleep; occurs with high voltage and low frequency (1 to 4 hertz); theta rhythm, theta wave
the normal brainwave in the encephalogram of a person who is awake but relaxed and drowsy; occurs with low frequency and low amplitude

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