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We can't pay attention to more than one thing simultaneously.

Updated: May 29, 2022

「Studying the "Study of Consciousness" (Stanislas Duanne) can further deepen your understanding of coaching theory.

I am studying to add a unique flavour to "unconscious rewriting".

This series of blog posts are my study notes. This time, the theme that follows the unconscious and conscious

I will write a "sign of consciousness".


Descartes said, "We can't pay attention to several things at the same time."

From the experiment results, we can see that the visual information is advancing in the area of ​​the visual system because two types of brain waves, P1 wave and N1 wave, are activated.

However, there was no change in EEG activity with or without information awareness concerning this early progression.

P1: Positive EEG peaking around 100 ms

N1: Negative EEG that peaks in about 170 ms

The degree of activation is extreme, and the strength does not change whether or not the subject can see the target word.

The target word has reached the visual cortex.

Only a few tens of milliseconds after that, the activation pattern changes dramatically.

When 200 to 300 milliseconds have passed since the word was displayed, the brain's activity declines with unconscious information while it progresses steadily toward the front of the brain with conscious information.

By about 400 ms, the difference becomes noticeable, with intense activity in the left and right frontal lobes, anterior cingulate cortex, and parietal cortex only when the target word is conscious.

After 500 milliseconds, activation returns to the visual cortex in the back of the brain, including the primary visual cortex.

Many researchers have observed this reverse activation, but it is not well understood.

When the information is conscious, brain waves with sufficient voltage permeate this area.

It starts around 270 ms and peaks at 350-500 ms.

This significant, slow event is called the P3 wave.

The voltage is not at a few microvolts. , Million times smaller than AA batteries.

The first P3 wave was triggered by a preceding string displayed to distract the subject.

This string was always consciously perceived by the subject.

The second P3 wave was triggered when the target word was visible.

There is a particular trade-off between these two events. For example, if the first P3 wave was long and extensive, the second P3 wave could be missing.

And this case was seen precisely when the subject overlooked the target word.

When the brain is occupied for a long time by the preceding character string, the target word displayed next is

At the same time, it turned out that I couldn't pay attention.

Descartes was the first person to point out that "we cannot pay attention to several things simultaneously."

He said that the mechanical fact that the pineal gland can only tilt to one side at a time,

I explained that it is a factor that limits consciousness, but it has already been denied.

Apart from this theory of localization of the brain, Descartes said, "I can't pay attention at the same time."

Concerning the point, He was correct.

The conscious brain cannot experience multiple verbal ignitions at the same time.

While the prefrontal cortex and parietal lobe are processing the first stimulus,

You can't get to work on the second word.

The second word (stimulus) that enters the brain is that

if consciousness does not finish processing the previous target,

It means that you cannot reach consciousness.

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