I wish had avoided the negative thoughts that made me depressed. I thought I was depressed because a bad thing that could destroy my dream to become a doctor had happened to me. But my depression was the result of structural damage to the brain.

The other thing is slight acceleration and deceleration of the head in every day life. A normal brain can tolerate them if they are smaller than 10G . But after a concussion, I think, the ability of the brain to tolerate them is lessened. when I was driving I felt something because of the bumps on the road. It is not like that the 1G has no effect on the brain( in my opinion)
but the ability of the normal brain to recover from that is so good that it does not leave any effect. And the greater the acceleration is, It is harder for the brain to recover. fast roller coasters have accelerations up to 2.7G so do not try them after a concussion.

Some people thing that the only thing that cause the damage in a concussion is the impact of brain to the scull but that is not true.The acceleration can cause the veins to tear and leave bruises because the blood does not want to change It's speed but the vein is accelerating.
the same thing happens with axons which are even weaker than the veins, although they might be at the center of the brain and do not hit the scull they will tear apart( not all of them of course). because of this, water diffusion increases and scientist use the water diffusion as a marker of axonal damage.
A really good way to SEE this is to drop a watermelon on the ground you will see that its color is more red which is because of the fact that water comes out of it's cells.
with all this you might be disappointed but don't be. because the ability of the brain to recover is great. just as the brain can learn a new language it can also learn how to remember things better or hear voices without hearing the ringing.
by the way the solution for avoiding road bumps is to lean a little forward. this was given by someone else.

shayan,

Welcome to NeuroTalk. Please feel welcome to introduce yourself and tell us how we can help you.

We have discussed G forces on the brain many times. 1 G has no effect on the brain. It is constantly subjected to 1 G. Just walking down stairs can subject the brain to 1.5 to 2 G's. A sub-concussive impact is usually 10 to 20 G's or more.

Most of the matter in the brain has very similar densities which relates to mass with relates to differences in acceleration and deceleration. Shearing is more related to rotational forces as the skull tries to prevent the brain from rotating inside the skull while rotational forces try to keep the brain tissues rotating. There are also shock waves that travel through the brain starting at the point of impact that also damage tissue.

Roller coasters are usually rated for acceleration/deceleration and up and down G's but rarely for side to side G's. Side to side G's can be the worst because they can cause the head to impact the safety bars increasing the G force at impact.

My doctor suggested that depression is due to the brain being less tolerant of life stresses, emotional, physical, chemical. Mitigating those stresses should reduce depression. Learning to live with your dysfunctions and limitations is the first way to reduce those stresses. Then, the achievement of learning work-arounds to be productive enhances stress reducing chemistry ( dopamine, etc).

Finding new ways to memorize and process information can go a long way toward achieving your dream. Many find they need to change from a single learning system (auditory/lecture or visual/reading) to a combined system. Reading out loud to oneself can be helpful. Most secondary schools have programs to help with some of these struggles. Sitting at the front of the class/lecture hall can be helpful.

So, please tell us more about how you are doing.

My best to you.

Hi Shayan,

Welcome to NeuroTalk.

I hope you will find support and information here.

Don't give up on your goals(s). You have other options.
Glad you are reaching out here.


DejaVu

Hi mark,

Thanks for your good information.

I am a 19 years old pre-med student. I had a concussion 2 month ago when someone punched me in the face and I was unconscious for 3 to 4 seconds. I didn't have headaches but I had a slight ringing in the ear and fasciculations ( I still have fasciculations after a period of interruption). I had had hit my head a lot before but I did not know what a concussion was. I used to go snowboarding and skateboarding and every time I would fall a few times.
I also had a fracture when I was 10 but I think It wasn't serious.

Thanks a lot

There is a big difference between falling skating and snowboarding and hitting your head and suffering a concussion. I suggest you get focused on protecting your brain if you expect to make it into and through med school. Med school will be very stressful and a challenge for a concussed brain.

Did you fall to the ground when you were punched ?

no, someone held me.