brainwave

Noun
  1. (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph (synset 111451416)
    referred to in: neurophysiology - the branch of neuroscience that studies the physiology of the nervous system
    is a type of: bioelectricity - electric phenomena in animals or plants
    subtypes:
    • 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
    same as: brain wave, cortical potential
  2. The clear (and often sudden) understanding of a complex situation (synset 105815314)
    is a type of: apprehension, discernment, savvy, understanding - the cognitive condition of someone who understands
    subtypes:
    same as: brainstorm, insight

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