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History of the debate "How invisible images are processed in the brain".

Updated: May 29, 2022

(Cognitive science) In coaching, rewriting the unconscious is a powerful means of achieving the goal.

By studying "Study of Consciousness", I would like to think about my method and the coaching theory, such as unconscious rewriting.


This series of blog posts is my study note.

 

Until the 1990s, "How are invisible images processed in the brain?"

There was still a great deal of confusion, and various theories were flying around.


  1. The most straightforward theory was that the cortex had consciousness, but the other neural circuits did not. (Cortex: Folded sheet consisting of neurons on the surface of two cerebral hemispheres) The most evolved part of the mammalian brain, the cortex, is responsible for the advanced functions underlie attention, planning, and speech. It is realistic to think that all the information that reaches the cortex is conscious.

  2. The unconscious action occurs only within specialized brain nucleus tissues such as the amygdala and hills.

  3. The amygdala and hills have evolved to perform functions such as detecting fear-causing stimuli and eye movements. Since these neurons are located beneath the cortex, they form a structure called the "subcortical circuit." The idea of ​​binomial division is that the left hemisphere, which has a three-language circuit and can report its work, has consciousness but does not have the right hemisphere. There is. "

  4. All visual information transmitted in the brain through the ventral pathway is conscious. On the other hand, the information transmitted through the parietal cortex and through the dorsal pathway that guides behaviour depending on the shape and position of the object remains unconscious forever.


Even the simple dichotomy of 3 and 4 did not withstand verification.


The latest findings indicate that all brain areas are involved in both conscious and unconscious thinking.


To reach this conclusion, it was necessary to gradually deepen understanding of the unconscious range of defence through clever experiments.


A simple experiment with a patient with brain damage found that the unconscious effect resides in the base of the subcortical brain.


The amygdala, for example, is an essential tissue for coding fear, and when threat-causing stimuli such as seeing a snake are transmitted from the retina through high-speed transmission pathways before emotions are captured at the conscious level of the cortex.


Many experiments have shown that such emotional assessments are unknowingly rapid, mediated by high-speed neural circuits in the amygdala.


The story of snakes is also covered in coaching.

"The amygdala is generally said to control emotions or emotions, but to be precise, it controls only old emotions. Old emotions are so-called instinctive emotions. There are emotions in the amygdala that are at stake or satisfy one's desires. "

From "A great leader has a different" brain " (written by Hideto Tomabechi)


The Swiss neurologist Edouard Claparade has a case study in the early 1900s.


He stabbed lightly with his pin as he held the hand of the anamnestic patient.

The patient did not remember him the next day, but he categorically refused to hold his hand.


This experiment worked outside the level of awareness for dynamic movements and always specialized in emotional processing.

It was the first evidence to indicate that it originated from the subcortical nerve nucleus.

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