I’m a Scientist is like school science lessons meet the X Factor! School students choose which scientist gets a prize of $1000 to communicate their work.
Scientists and students talk on this website. They both break down barriers, have fun and learn. But only the students get to vote.
This zone is the Disease Zone. It has scientists studying the causes and processes of illness . Who gets the prize? YOU decide!
hahahahaha, I know some people are half asleep at work or school. Some people don’t really wake up until they’ve had a coffee!
Sleeping is a state where your brain decides to shut down and only function enough to control basic functions such as breathing and your heart beat (otherwise you’d be dead). Sleeping allows your body and brain to recover from the day. When you’re awake and active, all cells in your body are also awake and active. Cells generate energy to keep the cell going and your brain is controlling everything in your body (your movements, your food intake, your blood sugar levels, your thinking processes). Active cells will produce some waste products and there will be some cell damage by the end of the day (production of energy in a cell also produces reactive oxygen species which can damage DNA, proteins and fats).
So sleeping allows your body and brain to recover, clean up the mess, repair any damage and be ready for a new day.
Without sleep, you will die. I think you might be able to go 2-5 days without sleep, but then there’s a big chance you’re brain will shut down out of exhaustion.
Dreaming is how your brain deals with the experiences of the day and new memories. Often, things you learn (even meeting someone new), will intially be stored in a particular part of the brain. But when you sleep and dream, the brain moves these new memories to other parts of the brain for better storage. Everybody dreams, but some remember and others don’t.
Being awake is simply a state of consciousness, where you are aware of what’s happening around you and you can interact with your environment.
In biological terms, it’s all regulated by hormones! When your eyes get less light (when it gets dark at night), your body starts to produce a hormone called melatonin. This hormone tells your brain it’s time to shut down and sleep. Just before you wake up, your body will produce the hormones adrenocorticotropin and cortisol. These hormones tell your body it’s time to wake up!
Your body has a build-in clock and the cells in your body have specific ‘clock’ genes that control your body rhythm (also called circadian rhythm). It’s a relatively new field of research and they’re still trying to find out which genes are responsible and how they know what time it is!
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Dear Sarahb; Sleep is a rest state of body including brain activity with suspended consciousness, sensory activity, muscle activity, etc. If someone is in half asleep, and walk around in unconsciousness, it is called sleepwalking or noctambulism.
Sleep is observed in all mammals, birds, etc. In mammals and birds, sleep is divided into two broad phases: rapid eye movement (REM) and non-rapid eye movement (NREM) sleep. Sleep proceeds in cycles of REM and NREM, usually four or five of them per night.
Dreaming is the perceived experience of sensory images and sounds during REM phase of sleep. Sigmund Freud postulated that dreams are the expression of desire in subconsciousness, and used dream as a means of psychoanalysis for that suppressed desire. Dream has a long history of being used as a sign of one’s fate/future or apocalypse.
Awakeness is the state of full awareness of sensory systems and activity of muscular systems. Sleep and awakeness are affected by the circadian cycle and behavior of not only humans but also animals and cattles known to be affected. That is the rationale of summer time, changing 1 hour earlier during the long summer days.
‘Daydreaming’ refers to an unachieable desire.
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