No39

How is intellect created?

The "thinking center" is not discovered at a present stage.

A "thinking center" does not exist in a cerebral specific portion.

We will guess that it is generated in operation process out of activity of the whole brain, .

In a cerebrum, many brain cells lengthen a neuron, and the complicated nerve circuit is constituted.

It is assumed that the stimulus with the body was received and it was transmitted to the brain.

A cerebrum reacts to the stimulus received from the body, and it carries out operation processing.

In case a cerebrum returns the signal to the body again, it will pass through various nerve circuits.

The circuit selection performed then is called "thinking."

Then, what is the selection made?

Being considered in the first place is "natural selection."

For example, although the flow of a river is drawing the complicated curve, it is the law of gravity which determines the flow.

It flows from a high place at a low place.

This principle is performed faithfully,

the direction where a river flows is decided.

Whatever the situation of geographical feature, a river chooses a low place.

Although a cerebral circuit also has an exchange of a chemistry substance

Fundamentally, electric current is acting.

When lightning shines, the course passes through the few place of resistance.

The few place of resistance is chosen in a cerebral circuit.

And it should flow so that it may pass in the shortest distance.

Accordingly, the state where electric current flows most efficiently of the circuit structure in a cerebrum is called "consideration."

Geographical feature determines the flow of a river.

Geographical feature should change by a river's own action.

"Whenever a cerebral circuit also receives a stimulus, it is influenced and changes."

Also in this way, it is considered.

The circuit which flowed at once is saved as it is, and if there is an exact stimulus, electricity will flow again there.

This is "memory."

If the same stimulus happens many times

as a result,

many adjoining circuits pass,

the memory becomes clear.