An electroencephalograph measures

Question

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An electroencephalograph (EEG) measures electrical activity in the brain, including the presence and strength of different types of brain waves such as alpha, beta, theta, and delta waves. Choice A, cardiovascular reactivity, would be measured by a different type of medical device such as an ECG or Holter monitor. Choice B, skin conductance, would be measured by a skin conductance sensor to detect changes in sweat gland activity that indicate emotional arousal. Choice C, morningness-eveningness, would be measured by a self-report questionnaire that assesses an individual's preference for morning or evening activities.

An Electroencephalograph Measures