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GATE 2022 XH5 (Psychology) – Question 39

Biological and Evolutionary Basis of Behaviour · Methods of Physiological Psychology: Invasive (anatomical, degeneration, lesion, chemical, microelectrode) and non-invasive (EEG, scanning) methods · 1 mark · Multiple choice

Which of the following techniques is used to measure the variations in the activity of Ascending Reticular Activating System (ARAS)?

  1. ECG
  2. PET
  3. fMRI
  4. EEG

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Show answer and explanation

Correct answer: (D) EEG

Explanation

The ascending reticular activating system controls arousal and sleep-wake states, and changes in arousal show up in the EEG.