Who Switched off Your Brain?

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In this week's text, I found the idea of neural plasticity invigorating. Recently, I have found myself hooked on the same thought when reflected on my latest leisure reading, Who Switched off Your Brain?, by Dr. Caroline Leaf. Leaf states, "The way we think influences the way we talk and behave - every action or word first begins as a thought. Thoughts grow into words and actions that affect our relationships and can physically change the structures of our brains."
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Neuroplasticity is the ability to alter those nature made structures through nurture. Leaf further asserts that a process called epigenetics exists that surpasses the realms of nature and nurture. "In essence, [it is] the process by which... thought impulses select, modify and regulate gene activity," says Leaf. More basically, this means we can change our own brains by how we think. She asserts, "thinking and choosing activates reactions, which in turn activates genetic expression, meaning proteins are made... so, there is an actual physical change in brain structures as we think." This in turn shapes our biology, which means we can change the way we perceive events by consciously making an effort to grow "positive thought trees."

In reflecting on the claims by Leaf and your own personal experience, do you think you can alter your actions and impulses by conscious thought? Furthermore, if you believe the latter question to be true, do you think these changes alter your biology and the genes passed to your children?

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I agree with Leaf. I try to hold a positive attitude towards everything in my life and it has helped me a lot to stay calm and not go into depression. I have friends who follow the same thing and they are always cheerful and make their surroundings happy too. In the book, "The Secret by Rhona Byrne", she gives many examples. Some of them seem hard to believe now that we have the critical thinking switch turned on. But in general developing positive thoughts and getting over something is any time better than staying moody. Having said that I don't know if those genes will be passed to my children but I will definitely teach them to have a positive attitude towards life.

That is such an interesting thought that what we do shapes our brain. This whole time I was thinking that the way our brain is made up is waht determines our behaviors. That is a good point. I am glad you brought this new perspective up. Our brain is such an amazing control center. If we have the ability to change the way our own brain is structured by manipulating our thoughts and behaviors we could basically choose what our brain is?! If I am understanding you correctly that is what I think you are talking about. I might have taken it one step to far, but wouldn't that be cool if we could change our own brain structures by thought?

I think this process can take a long time but you can eventually alter your brain through conscious thought. The genetic make up of your brain can be altered and is constantly altered through time over your nurture. There are genetic factors I think that cannot be changed though. Thus these genes can be passed down to your children because of natural selection they will eventually get half of our genes!

You bring several interesting ideas to the table in this creative blog post Kelsi. The idea of neuroplasticity is a hot topic these days and it is probably the case that the brain is constantly in a state of change. Processes that we think of as simply brain output such as speech and memory recall likely change patterns of activation each time they occur.

If you are interested in reading about this subject further I think you would enjoy The Brain That Changes Itself by Norman Doidge. And if you like books with insights about gender differences and relationships you might also enjoy "Sex at Dawn" by Ryan & Jetha about the origins of human sexuality and much more.

I think a good example of how we can change our brains simply by thinking is Cognitive Behavioral Therapy which is known to be one of the best techniques for dealing with depression. We will talk about CBT at the end of the semester. Whether these changes can be passed down to future generations is probably not biologically possible likely in the short term but perhaps changes in one's own behavior afford better environments for one's children and those changes those cultural or family tendencies get passed down several generations until they do become part of a more permanent genetic change.

Epigenetics is really interesting, I wrote about it in my blog post too. What I want to know is does this author who asserts that the way we think can change our brain have evidence to support that claim? The things I've learned about epigenetics suggest that environmental factors such as limited nutrition or exposure to chemicals affect gene expression. For an example two identical twins could be different heights depending on their diet. Height is something that is considered to be all genetic, but it is influenced by environment to an extent.

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This page contains a single entry by dora0075 published on February 5, 2012 12:27 PM.

Self-Control - Nature or Nurture? was the previous entry in this blog.

Genetics vs. Enviroment is the next entry in this blog.

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