BIO-1201 Lecture Notes - Lecture 5: Nuclear Membrane, Retina, Mitochondrion
Document Summary
Melatonin levels begin to rise in the mid- to late evening, remain high for most of the night, and then drop in the early morning. Light affects how much melatonin your body produces. Jet lag, insomnia, sad, helps control sleep patterns. Sleepiness, lower body temperature, vivid dreams, morning grogginess. Produces stress and activated the fight or flight response. 60% of people aged 13 64 experience problems sleeping nightly. 63% of americans do not feel they receive enough sleep. 15% of people aged 19 64 receive less than 6 hours on weeknights. 95% of participants used electronics such as television, cell phones, or computers in the hour before sleep. Passes through the retina to the brain. 40% (or higher) individuals check e-mails, texts from their bed. 2013 study - people who spent a week camping in the rocky mountains, exposed to only natural light and no electronic devices, had their circadian clocks synchronized with the rise and fall of the sun.
