Urban: His understanding is incredible, and he becomes an immortal starting from practicing martial

"If I enter the developmental stage again, I will be able to improve the efficiency of various body functions and even the brain in a short period of time."

"If it were before, I would still need a detailed physical examination at the hospital"

"But now I don't need it."

As for the reason... the reason is naturally that Bai Xuan has achieved certain results in learning sleeping skills and inner alchemy skills.

With the help of this result, he can perceive the subtle changes in the human body in more detail and make judgments.

"I had the inspiration last night, but I still need to accumulate some knowledge. After finishing the study of the human brain tonight, I will roughly be able to complete the optimization of the brain training chapter."

After getting dressed, Bai Xuan sat at the desk.

Since we want to exercise the brain, we naturally need to understand the brain.

Although modern science has not thoroughly studied the brain,

Bai Xuan can use his incredible understanding to make up for this part of the knowledge Missing.

But no matter what, the more knowledge, the better.

After this idea flashed through Bai Xuan's mind, Bai Xuan also opened"Human Brain Science".

The brain is the most advanced part of the nervous system, from left to right , composed of two right cerebral hemispheres. There are horizontal nerve fibers connecting the two hemispheres.

Each hemisphere includes: The cerebral cortex is a layer of gray matter on the surface, which is the concentrated part of the cell bodies of nerve cells.

There are many things on the surface of the human brain. There are concave grooves and raised gyri between the grooves, thus greatly increasing the area of ​​the cerebral cortex. The human cerebral cortex is the most developed and is the organ of thinking. It dominates all activities in the body and regulates the balance between the body and the surrounding environment. Therefore, the cerebral cortex is the material basis of advanced neural activities.

The motor system of the brain is responsible for generating and controlling movement.

The generated movement is transmitted from the brain to the body's motor neurons through nerves to control muscles.

The corticospinal tract carries movement information from the brain, The spinal cord transmits to the trunk and limbs, and the brain transmits movement information to the eyes, mouth and facial areas.

Large-scale movements are generated in the motor cortex, which is divided into three parts: the primary motor cortex in the prefrontal gyrus, which is responsible for Part of the movement related to different body parts.

These movements are supported and regulated by two other areas located in front of the main motor cortex: the premotor area and the supplementary motor area. The hands and mouth have a larger area in the motor cortex than other body parts , which makes more fine movements possible.

The cerebellum and basal ganglia play a role in fine, complex, and coordinated muscle movements. The connections between the cortex and basal ganglia control muscle tone, posture, and movement initiation, and are called It is an extrapyramidal system.

The sensory nervous system involves the reception and processing of sensory information, which is transmitted to the brain through the reception of specific receptors. The brain receives information about touch, pressure, pain, vibration and temperature from the skin and from the joints. Regarding joint position information, the sensory cortex is located near the motor cortex and, like the motor cortex, has areas corresponding to the sensations of different body parts.

Sensory information collected by sensory receptors on the skin is converted into neural signals, which pass through the spinal cord. A bundle of neurons passes to the brain.

The neurons run up the back of the spinal cord to the back of the medulla, where they connect with"second-order" neurons.

These neurons then move up to the thalamus with" Third-order" neurons connect and travel to the sensory cortex.

The spinal cord conducts information about pain, temperature, and total touch.

Neurons travel up the spinal cord and connect with second-order neurons in the brainstem reticular formation for pain and temperature, and can also be touched grossly on the peritoneal complex of the medulla.

Vision is first stimulated by external light in the retina, which is received and converted into neural signals by cones and rods, and ultimately sent to the occipital lobe The visual cortex.

The vision in the left visual field falls on the right side of the retina and is conducted to the lateral geniculate body through the optic nerve, so that all information about one side of the visual field is projected to the visual cortex of the brain on the opposite side.

Hearing and balance are both produced in the inner ear.

The sense of balance is produced by the movement of fluids in the inner ear while propagated vibrations produced by the ossicle bones are responsible for transmitting sound information.

They generate nerve signals through the vestibulocochlear nerve.

Neural signals pass through the cochlear nucleus, the olivary nucleus of the upper pole, the medial geniculate nucleus, and finally to the auditory cortex.

The sense of smell is produced by receptor cells in the epithelium of the olfactory mucosa in the nasal cavity.

This information travels through a relatively permeable part of the skull to the olfactory nerve, which carries the information to the olfactory cortex.

It is worth mentioning that among all sensory information, only olfactory information is transmitted directly to the cerebral cortex without passing through the nuclei on the thalamus.

The sense of taste is produced by receptors on the tongue and is transmitted along the facial and throat nerves to the brainstem. Some sensory information in the mouth is also transmitted from the pharynx to this area through the vagus nerve, and then the information is transmitted from here through the thalamus to The cortex of taste.

Attempts to correlate certain brain regions with basic emotions such as joy, anger, sorrow, and joy are still highly controversial, and some studies have not found specific locations that correspond to emotions.

The amygdala, orbitofrontal cortex, insula, and lateral prefrontal cortex areas appear to be involved in emotional processing.

Executive function is the collective name for the set of cognitive processes required to allow cognitive control of behavior: it is responsible for selecting and successfully monitoring behaviors that promote the achievement of chosen goals.

Executive function filters out useless information and reduces stimuli irrelevant to inhibition through attentional control and cognitive inhibition, processes and manipulates information held in working memory, the ability to think about multiple concepts at the same time, and switches tasks with cognitive flexibility to suppress impulses Behavior etc.

………

A lot of knowledge poured into his brain, which naturally made Bai Xuan's understanding of the brain more in-depth and concrete.