Grand Uncle Horace
Shake down the thunder
The brain is protected by meninges, a series of tough membranes. Added to this the brain floats in jelly like liquid called the cerebrospinal fluid, sometimes referred to as Brain soup. This is, a warm jelly like substance.
When the head is knocked there are several things that can happen depending on the angle, force and type of the blow (blunt force compared to sharp jab). If the blow is too light to cause damage the brain moves like a boat in a choppy sea and is protected. But a much harder or more precise angle on the blow may cause the brain soup to move completely away from an area of tgmhe skull and even the meninges can't protect the brain here. This is where you get the brain bruising and twisted brain syndrome that cause concussion. The brain moves in an unnatural way and this stresses the nerve centres, the cortex and the synapses (think of them as millions of little relay leads that send neurons to different parts of the brain so you can exist. Without them we are brain dead) to the point the become injured or out of alignment. Concussions come in different degrees but no matter how small they can still have an impact later in life. It really depends on the part of the brain most affected by the concussion.
I studied brain chemistry in psychology. It is a fascinating part of the human body. The engine if you are mechanical. The nerve centre if you are technical. It is our computer and like the computer, it does not like to be knocked around. Some people are prone to concussion due to their genetic make up. They may have lower soup levels or tender meninges. Or they may just have a fragile nervous system.
The brain is a study in progress. As much as medical science would like to claim they know about the brain, thry only know a certain amount. The rest is supposition. For instance, what do the chemicals in the brain actually do? There is a certain amount of evidence certain chemicals do certain things. But most psychotic drugs for instance, only target 2-4 chemicals when there are far more than this. Even the actual function of those chemicals is not fully understood. Reasonably yes, fully no. Are they the only chemicals that control behavior? No. Are they the only ones they take into account when designing psych drugs? yes.
So as you see the brain is more complex than even the most complex computer. Humans know what makes a computer work. Technicians, technical engineers etc can tell you how they designed and build computers. But nobody knows completely how the brain is really designed and why it is built the way it is. Nobody can claim to know everything about how it works because nobody know the entirity imof the complexity of the brain.
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Thanks for that Wolftone. The brain is one of our last frontiers. A century or so from now, medical science historians will probably consider our era and progress in understanding to be little more than the simple first steps.
ECT is an example of a treatment (nowadays mainly for depression attendant to bi-polar disorder), the efficacy of which can be observed, but the hows and whys of efficacy are still not fully understood.