<prompt> EEG waves prominent in occipital lobe isAlphaBetaGammaTheta  <response>: Stages of Sleep Electrophysiological Criteria Stage Of Sleep 1Voltage 2 Frequency 1EOG 2EMG Wakefulness eyes closed 1Low-voltage2 mixed, Alpha 8-13 Hz 1Eye movements, blinks2High tonic activity, voluntary movements Non Rapid Eye Movement sleep 75 Stage I 5 1Low-voltage, 2 mixed, Theta 3-7 Hz, veex sharp waves 1Slow eye movements2Tonic activity slightly decreased stage II 45 1Low-voltage2 mixed ,K-complexes sleep spindles 12-14 Hz bursts 1 Low tonic activity 2EOG None Stage III 12 1High-amplitude 75 uV 2 Slowdelta waves 2Hz occupying 20 to 50 of epoch Stage IV 13 1High-amplitude 2 Slowdelta waves occupy 50 of epoch Rapid Eye Movements sleep 25 1Low-voltage2 Mixed, Saw-tooth waves, theta activity, slow alpha activity 1Tonic atonia with phasic twitches 2Rapid Eye Movements As we proceed from wakefulness to sleep, we see the EEG waves becoming slower i.e decreasing in frequency, increasing in amplitude, heterogeneous mixed activity to homogenous waves. K complexes negative sharp wave followed by a positive slow wave EEG wave Frequency Recorded B A Te D Beta 13-30 Hz Parietally, frontally Activation of various areas of the brain Alpha 8-13 Hz Occipitally Wakefulnesseyes closed Theta 4-8 Hz All areas Sleeping adults, children Delta 0.5-4Hz All areas Sleeping adults, infants Pneumonic BATeD waves in active brain - deep sleep Reference: P.752 24.1 Normal Sleep Kaplan Sadocks Synopsis of Psychiatry: Behavioral SciencesClinical Psychiatry, 10th Edition 