miércoles, 27 de octubre de 2010

Neuromyths: "We only use 10% of our brain anyway"

Science advances through trial and error; this is because there are many theories that are constructed on the basis of observation.
One of this myths it is that we only use 10% of our brain. These myths came from probably Einstein who responded once during an interview this. Karl Lashley made support to this theory with electric shock experiments and many areas or the brain did not react to this shock, concluded that these areas had not function.
Another origin of the myth may be found in the fact that the brain is made up of ten glial cells for every neuron. Glial cells have a nutritional role and support nerve cells, but they do not transmit any information. In terms of transmission of nerve impulses only the neuron are recruited (or 10% of the cells comprising the brain) so that this offers a further source of misunderstanding on which the 10% myth might come, but this vision of cell function is simplistic: while the gial cells play a different role from that the neurons, they are not less essential to the functioning of the whole.
Neuroscience findings now show that the brain is 100% active. In neurosurgery when it is possible to observe the functions of the brain on patients under local anesthetic, electric stimulations show not inactive areas, even when not movement, sensation or emotion is being observed. No areas of the brain are completely inactive, even during sleep, if they were, it would indicate a serious functional disorder.

martes, 26 de octubre de 2010

stressing life

Stress is the emotional and physical strain caused by our response to pressure from the outside world. Common stress reactions include tension, irritability, inability to concentrate, and a variety of physical symptoms that include headache and a fast heartbeat.
It's almost impossible to live without some stress. And most of us wouldn't want to, because it gives life some spice and excitement. But if stress gets out of control, it may harm your health, your relationships, and your enjoyment of life.
It is usually be stressing with hard jobs or with the university in test period, because most of people don't have a good organization with their times, don't have time for recreation, time for fun with friends and they are only involve in this aspect of their lives.
When the stress began people fall in a depressing state, because they feel that their lives don't have sense. They don't have energy for do anything, they don't make things like in good times, and for example they don't concentrate and don't do a good work in their job or in the university.
Everyone can feel stress, because life in the city is based in productivity for the capitalist system that looks for machine not for people.
The only thing that you must do for not be stressing is advantage all thing in your around, all your family, friends and moments that makes you happy, because if you are in peace nothing going to disturb you.

lunes, 18 de octubre de 2010

Heathy lifestyle


Today is so common to listen that people have cardiovascular problems, obesity problem or don't do regular physical activity because of their sedentary life with their job and eating disorders.
I think that public politics to the healthy minister doesn't care too much with this case. For example in the school or university always there are stand of fast food and this are cheaper than healthy food.
Other problems is that in our country is not promote to do exercise regularly, in the school there are only once a week for like two hours and in the university is not obligatory to do this.
It must be part of the culture to practice some sport or have a healthy lifestyle in our country because this is too important for to have a good quality of life and for have a better efficiency in all of aspects in the life.
All people, especially young people must have access to do physical activity for at least three times a week, that their activities like job or in the university allow with its schedules give them time for this.
It is too important the emotional aspects, because for example the stress is very harmful to the body.
For have a healthy lifestyle you need keep your body in a good state together with have an equilibrate diet and an environment clear, quiet, relax, full of love and peace for enjoy all of beautiful times in our lives.