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Could be Dee, that's a really good point. I looked into the whole brain usage debate, and I am still between 2-100%? There are so many different results. The jury will remain out on that one as I have no idea. Thanks for contributing.

Actually, the idea that humans do not use all of our brain capacity has been rejected by most scientists. We use all of our brain capacity; the neurons don't fire all at the same time, much like pistons of an engine do not all fire at the same time. We do have examples of human brain firing 60-80% of neurons at the same time; it is a neurological condition known as epilepsy.

I mean when people have seizures don't we worry about them potentially dying?!?!

They're not consciously aware that they're using 60-80% of the neurons in their brain. Overstimulated. Like I said..."IF" we were had the ability to understand many languages because we are consciously able to use more of our brain.

When we're in certain situations I'm sure we use more of our brain without being aware. I stated "what if".

Man uses all of his brain functions, 100% of his neuronal capacity. The idea of man only using 10% of his brain capacity came from a flawed imagining study.

Does a 12 cylinder engine not use 100% of its capacitu because not all of its 12 pistons are firing at the same time? Most of human brain function is dedicated to inhibition of lower neuron excitation. If all of the inhibitory neurons were used at the same instance I will posit 3 senarios:

  1. Inhibition of all lower neuronal voluntary function resulting in catatonia and catalepsy.

  2. Negation of all higher inhibition resulting in myoclonic and sensory epilepsy.

  3. Combination of 1 and 2.

You're teaching me. Thank you. So with that understanding, do we use all of our brain to control these potential outbursts (epilepsy)? If I'm understanding you correctly you're saying all our brain capacity is being used to stop us from going crazy?

In a sense, I would agree with your conclusion about inhibitory-excitory balance keeping us sane. All of human neurons fire, but at different times, much like a piston of an engine needs to fire in sequence and staggered fashion to function as an engine. A functional imaging of the brain at a given time will highlight only a few areas, much like a functional image of an engine at a given time highlights only a fraction of the pistons firing.

The default mode of the brain is to inhibit neuronal firing because intensity and frequency of a neuronal cluster firing will result in the growth of that cluster over other clusters. The brain has such limited space that each neuron and neuronal clusters compete against each other to occupy as much real estate as possible.

All sensory input, excepting for touch and scent, passes through the thalamus, which inhibits most of sensory input from ever reaching the higher cortex. All motor output first needs to overcome the default inhibition of the higher cortex to activate. In a sense, our "free will" is the ability to inhibit behavior rather than activate behavior in the neurological field.

Sensory input overload, due to lack or inhibition would be akin to what an autistic person may experience. Sensory over inhibition would be the state of catatonia. Motor output overload would be myoclonic epilepsy. Motor output over inhibition would be catalepsy.

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