Brain Rules
-- By John Medina
(Score - 9/10)
This book looks at 12 aspects of how brain research can help us redesign our approach to everyday life, including exercise, sleep, study and the likes.
There are 12 chapters in this book, all highly entertaining, and all looking at everyday questions at a molecular level such as - Why is exercise good for us and How does stress cause heart attacks
See more at www.brainrules.net
Rule 1 - Exercise boosts your brain power
> Our brains were built while we were walking large distances - 12 miles a day! That's how the brain likes it.
> To improve your thinking skills, move!
> Exercise gets blood to your brain, bringing it glucose for energy and oxygen to soak up the toxic electrons that are left over from the reaction of blood absorbing glucose (its an almost violent reaction). If left alone, these electrons can cause severe damage to the cells, especially in the soft tissue of the brain. This is what leads to stroke - when enough blood does not flow to the brain and therefore brain doesn't get enough oxygen, these free electrons already start to cause significant damage starting within 5 minutes or so. Exercise also stimulates the protein that keeps neurons connecting.
> Aerobic exercise just twice a week halves the risk of general dementia. Its cuts the risk of Alzheimer's by 60%.
Rule 2 - The human brain evolved too
Going from four legs to two to walk on the Savannah freed up energy to develop a complex brain.
Rule 3 - Every brain is wired differently
We have a great number of ways of being intelligent, many of which don't show up on IQ tests. No two people's brains store the same information in the same way in the same place. What you do and learn in life physically changes what your brain looks like - it literally rewires it.
Rule 4 - We don't pay attention to boring things
The brain's attentional "spotlight" can focus on only one thing at a time: no multi-tasking.
We are better at seeing patterns and abstracting the meaning of an event that we are at recording details.
Emotional arousal helps the brain learn.
Audiences check out after 10 minutes, but you can keep grabbing them back by telling narratives or creating events rich in emotion every 10 minutes.
Rule 5 - Short Term Memory - Repeat to remember
You can improve your chance of remembering something if you reproduce the environment in which you first put it into your brain.
Most of the events that predict whether something learned will also be remembered occur in the first few second of learning. The more elaborately we encode a memory during its initial moments, the stronger it will be.
Rule 6 - Long Term Memory - Remember to repeat
Most memories disappear within minutes, but those that survive the fragile period strengthen with time.
Our brain gives us only an approximate view of reality, because we mix new knowledge with past memories and store them together as one.
The way to make long term memory more reliable is to incorporate new information gradually and repeat it in timed intervals.
Rule 7 - Sleep well, think well
The brain is in a constant state of tension between cells and chemicals that try to put you to sleep and cells and chemicals that try to keep you awake.
The neurons of your brain show vigorous rhythmical activity when you're asleep - perhaps replaying what you learned that day. You consolidate learning when you sleep and your recollection is better when you wake up the next day.
People vary in how much sleep they need and when they prefer to get it, but the biological drive for an afternoon nap is universal.
Loss of sleep hurts attention, executive function, working memory, mood, quantitative skills, logic reasoning and even motor dexterity.
Rule 8 - Stressed brains don't learn the same way
Your body's defense system-the release of adrenaline and cortisol (both released from glands on top of the kidney)-is built for an immediate response to a serious but passing danger, such as a saber-toothed tiger. Chronic stress, such as hostility at home, dangerously deregulates a system built only to deal with short-term responses.
Under chronic stress, adrenaline creates physical scars in your blood vessels that can cause a heart attack or stroke, and cortisol damages the cells of the hippocampus, crippling your ability to learn and remember.
Individually, the worst kind of stress is the feeling that you have no control over the problem-you are helpless.
Rule 9 - Stimulate more of the senses
Our senses evolved to work together-for example, vision influences hearing-which means we learn best when we stimulate several senses at once.
Smells have an unusual power to bring back memories maybe because smell signals bypass the thalamus and head straight to their destinations, which include that supervisor of emotions known as the amygdala.
Rule 10 - Vision trumps all other senses
Vision is by far our most dominant sense, taking up half of our brain's resources.
We learn and remember best through pictures, not through written or spoken words.
Rule 11 - Gender
Men and women respond differently to acute stress. Women activate the left hemisphere's amygdala and remember the emotional details. Men use the right amaygdala and get the gist.
Rule 12 - We are powerful and natural explorers
Some parts of our adult brains stay as malleable as a baby's, so we can create neurons and learn new things throughout our lives.
-- By John Medina
(Score - 9/10)
This book looks at 12 aspects of how brain research can help us redesign our approach to everyday life, including exercise, sleep, study and the likes.
There are 12 chapters in this book, all highly entertaining, and all looking at everyday questions at a molecular level such as - Why is exercise good for us and How does stress cause heart attacks
See more at www.brainrules.net
Rule 1 - Exercise boosts your brain power
> Our brains were built while we were walking large distances - 12 miles a day! That's how the brain likes it.
> To improve your thinking skills, move!
> Exercise gets blood to your brain, bringing it glucose for energy and oxygen to soak up the toxic electrons that are left over from the reaction of blood absorbing glucose (its an almost violent reaction). If left alone, these electrons can cause severe damage to the cells, especially in the soft tissue of the brain. This is what leads to stroke - when enough blood does not flow to the brain and therefore brain doesn't get enough oxygen, these free electrons already start to cause significant damage starting within 5 minutes or so. Exercise also stimulates the protein that keeps neurons connecting.
> Aerobic exercise just twice a week halves the risk of general dementia. Its cuts the risk of Alzheimer's by 60%.
Rule 2 - The human brain evolved too
Going from four legs to two to walk on the Savannah freed up energy to develop a complex brain.
Rule 3 - Every brain is wired differently
We have a great number of ways of being intelligent, many of which don't show up on IQ tests. No two people's brains store the same information in the same way in the same place. What you do and learn in life physically changes what your brain looks like - it literally rewires it.
Rule 4 - We don't pay attention to boring things
The brain's attentional "spotlight" can focus on only one thing at a time: no multi-tasking.
We are better at seeing patterns and abstracting the meaning of an event that we are at recording details.
Emotional arousal helps the brain learn.
Audiences check out after 10 minutes, but you can keep grabbing them back by telling narratives or creating events rich in emotion every 10 minutes.
Rule 5 - Short Term Memory - Repeat to remember
You can improve your chance of remembering something if you reproduce the environment in which you first put it into your brain.
Most of the events that predict whether something learned will also be remembered occur in the first few second of learning. The more elaborately we encode a memory during its initial moments, the stronger it will be.
Rule 6 - Long Term Memory - Remember to repeat
Most memories disappear within minutes, but those that survive the fragile period strengthen with time.
Our brain gives us only an approximate view of reality, because we mix new knowledge with past memories and store them together as one.
The way to make long term memory more reliable is to incorporate new information gradually and repeat it in timed intervals.
Rule 7 - Sleep well, think well
The brain is in a constant state of tension between cells and chemicals that try to put you to sleep and cells and chemicals that try to keep you awake.
The neurons of your brain show vigorous rhythmical activity when you're asleep - perhaps replaying what you learned that day. You consolidate learning when you sleep and your recollection is better when you wake up the next day.
People vary in how much sleep they need and when they prefer to get it, but the biological drive for an afternoon nap is universal.
Loss of sleep hurts attention, executive function, working memory, mood, quantitative skills, logic reasoning and even motor dexterity.
Rule 8 - Stressed brains don't learn the same way
Your body's defense system-the release of adrenaline and cortisol (both released from glands on top of the kidney)-is built for an immediate response to a serious but passing danger, such as a saber-toothed tiger. Chronic stress, such as hostility at home, dangerously deregulates a system built only to deal with short-term responses.
Under chronic stress, adrenaline creates physical scars in your blood vessels that can cause a heart attack or stroke, and cortisol damages the cells of the hippocampus, crippling your ability to learn and remember.
Individually, the worst kind of stress is the feeling that you have no control over the problem-you are helpless.
Rule 9 - Stimulate more of the senses
Our senses evolved to work together-for example, vision influences hearing-which means we learn best when we stimulate several senses at once.
Smells have an unusual power to bring back memories maybe because smell signals bypass the thalamus and head straight to their destinations, which include that supervisor of emotions known as the amygdala.
Rule 10 - Vision trumps all other senses
Vision is by far our most dominant sense, taking up half of our brain's resources.
We learn and remember best through pictures, not through written or spoken words.
Rule 11 - Gender
Men and women respond differently to acute stress. Women activate the left hemisphere's amygdala and remember the emotional details. Men use the right amaygdala and get the gist.
Rule 12 - We are powerful and natural explorers
Some parts of our adult brains stay as malleable as a baby's, so we can create neurons and learn new things throughout our lives.