<prompt> Characteristics of Slow Wave Sleep areAlso called paradoxical sleeDreams occur but not consolidated into memoryHeart rate respiratory rate become irregularEEG shows desynchronized pattern of b waves  <response>: C Heart rate and respiratory rate become irregular Slow waves in the EEG and their behavioral correlate, slow-wave sleep, can be produced by stimulation of at least three subcortical regions. The diencephalic sleep zone is in the posterior hypothalamus and the nearby intralaminar and anterior thalamic nuclei. The stimulus frequency must be about 8 Hz; faster stimuli produce arousal. 