More Related Content Similar to The Science Behind Sleep (20) The Science Behind Sleep1. The Adventure of Sleep Presented by: Erica Johnson [email_address] February 20th, 2009 8. Awake EOG-L EOG-R EEG-1 EEG-2 EEG-3 EEG-4 EMG EYES: Open with blinks BRAIN WAVES: High frequency (fast) Low amplitude (small) Desynchronized MUSCLE: Strong muscle tone 9. Stage 2 NREM EOG-L EOG-R EEG-1 EEG-2 EEG-3 EEG-4 EMG EYES: Eye movements stop (slowly roll in Stage-1 NREM) BRAIN WAVES: Lower frequency (slower) Higher amplitude (larger) More synchronous Special events: K-complex and Sleep Spindles MUSCLE Lowered muscle tone 10. Stage 4 NREM (SWS) EOG-L EOG-R EEG-1 EEG-2 EEG-3 EEG-4 EMG EYES: No eye movements (contamination from EEG) BRAIN WAVES: V. low frequency (SLOW) V. high amplitude (LARGE) Synchronous brain waves MUSCLE: Lowered muscle tone 11. REM EOG-L EOG-R EEG-1 EEG-2 EEG-3 EEG-4 EMG EYES: Eyes closed…BUT Horizontal movements - back and forth BRAIN WAVES: High frequency (fast) Low amplitude (small) Desynchronized (like awake) Absent muscle tone 12. REM Sleep Paralysis All nerve connections to your skeletal body muscles are inhibited, causing paralysis 27. Severe pathology, debilitated appearance, disheveled fur, severe lesions on tails and plantar surfaces of their paws “ While the paper does not ultimate say what they think caused death, it appears to have been catastrophic immune system failure leading to septicemia.” “ Thus, rats die as quickly of sleep deprivation as they do food deprivation.”