Wednesday, February 19, 2014

Stress and the Brain

Brought to you by Angela


http://www.youramazingbrain.org/brainchanges/stressbrain.htm

5 comments:

Christina said...

I thought that this article was really interesting. I have to admit that I never really knew what stress was/did. It’s a little bit scary that stress can kill brain cells and decrease the amount of neurons made. However, I learned that it’s also beneficial, although I think if a lion is chasing you, the lion will win no matter what your stress response is. I feel like this could help, though, for smaller things where it’s just a matter of something less. For example, if I was running away from something that is about the same speed as me, the stress response could probably help me run faster. This brings me to a question; doesn’t the other animal have a stress response as well? If I were chasing a bunny or something, the bunny and I would probably both feel a stress response, wouldn’t we? Also, I have another question; the article mentioned that only mammals evolved to have a stress response. Why is that? I feel like other animals could use the stress response just as much as we could. I have noticed that spiders sometimes don’t even move, or when they move go slowly when they are being caught. These spiders could definitely use this stress response. Why didn’t they evolve? Think of how dangerous it would be for us if we couldn’t be stressed. I think this is an important topic and hope to research it further.

Katarina said...

I always thought that stress was a bad thing, but as mentioned in the article, it can help us run away from something or do better. The stress response both scared me and surprised me. It is really frightening to learn that stress kills brain cells, but in contrast, it can help you. But, the article also states that you need cortisol (the hormone that kills brain cells) is also crucial to have in your body. Why is it a positive thing if it makes your brain more vulnerable? And as I knew earlier, stress can cause depression, but in contrast, it surprised me that it could help you in life-threatening situations. I agree with Christina on the fact that it would be better for other animals besides mammals to have stress response, and as in her example, that both animals running (as long as they are both mammals) would have stress response. If one moves faster, wouldn't the other have stress response and catch up? Well, this wouldn't necessarily be true because, there is a physical limit on how fast any animal can run, in that, some can move faster than others. Evolving has helped us do this, but where else will that take us? I found this article very interesting and I hope to learn more.

Hudson said...

I have learned a lot from this article. I came up with something while I was reading this article. The feeling of being stressed is maybe thinking about the worst possible thing to happen in the current situation. For example, in the article they used the walking in the jungle example. The worst possible scenario there is you could get torn to shreds and never be seen or found again. I know it sounds harsh and scary but that is what could happen. During that short period of time you have left, you panic because you cannot think of anthing to do to save yourself. I remember in Room 5 Mrs. Crain told us about stress and the reactions in your brain. She came up with a name for the part in your brain. I remember she said it was small but powerfull. I forget the name and the details however I slightly remember it. I never knew that stress could kill brain cells. Stress can be harmful to you now that I think of it. When you are stressed the memory will most likely stay with you, and you will hate to think about that scary situation you were involved with. Overall, stress can help you but also hurt you. It is a very complex thing to think about.

Samantha said...



This article is super interesting. Before reading this, I never really understood how stress worked. Stressing can be so helpful, yet really dangerous as well. As I was reading this article, I started to formulate a few question. First, this article talked some about how too much stress relates to depression. The article mentioned a drug designed to stop cortisol from being released, therefore preventing you from stressing. I have also heard vaguely that certain smells can also help you relax, and stop you from being overly stressed. I was wondering if there are any scientific tests that prove that certain smells can help you stay calm. If so, what scents are they? In addition, I was wondering if any particular music helps humans stay calm. Of course, I am sure that something that relaxes some people might not calm others, but there is a probably a more popular scent/sound that relaxes most. Overall, I thought this article was very interesting and informative. I learned a lot about stress, and really enjoyed reading it.

Benjamin Z. said...

I though that this article was great and allowed insight into a topic that many people could use help understanding: STRESS. I learned from this article that stress responses have great effects and bad effects. For example, if a lion shows up behind you, your stress responses kick in, allowing you to run faster, fight harder, and breath longer. In short bursts, this "adrenaline" can be very beneficial. But what happens when you get too much? It can not only effect you immune system, but also decrease the number of brain cells you have. This can play a large roll in memory. Also, one very important thing that was mentioned is that chronic stress has a lot to do with stress. People with depression have a lot more cortisol then others do. Is that a good sign? (no). About the article itself: It kind of skipped around and gave details here and there. I would have preferred one specific part of research and a lot of detail about it. I would like to know the stress levels for other animals and if the brain damage applies for them too. This is definitely a research-worthy topic.