Four Stages of Sleep Stage 3 moderate to deep sleep
{"Image DocumentName": "Four Stages of Sleep Stage 3 moderate to deep sleep", "Image ImageDescription": "about 20 minutes after stage 1. theta and delta waves appear. muscles relax and vital signs (body temperature, blood pressure, heart and respiratory rate) fall. Stage 4. called slow-wave-sleep (SWS) \u2013 EEG dominated by low-frequency, high amplitude delta waves. muscles now very relaxed, vital signs at their lowest, and we become more difficult to awaken.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}