#头条创作挑战赛#
The older generation believes
Children can see things that adults can't
Or see the deceased - yin and yang eyes
But each of us reminisces about when we were children
I don't seem to have any memories either
It's about seeing unidentified objects
Some vague memories are even just dreams
Mistaking dreams for real things
But I want to do it today from a scientific point of view
Let's talk to everyone
Children can see "things" that adults can't see.
Is it true or not?
The reason why children "see" things that adults can't see
It's because their visual system is different from that of adults
More than 90% of the information that enters the brain from the outside world comes from the eyes
The baby's visual system is a complex process
It is also an important stage in visual development
But parents at this time may pay more attention to intellectual development
The visual development and health care of the baby is neglected
Newborn babies have extremely poor vision
There is only light sensibility
The world seen is blurry and hazy
After a month, the baby will just be able to see
objects at a distance of 20-30 cm from him
He also likes to track moving objects within the range he can see
After 2 months, as the body grows
Your baby's vision will become more focused
I like to look at moving objects and the faces of adults
I like to look at the contrasting colors
Within a range of 90 degrees, the eyeball can move with the object
At this point, if you bring the object very close to him
It can also irritate your baby's eyes
Protective reflexes such as blinking are present
After 3 months, your baby's vision will become more and more concentrated
I have begun to be able to distinguish between red and green
The field of view can also reach 180 degrees
And will be extra sensitive to red
At 8 months, they can pass by sight
Judge what mom and dad look like
At 9 months, vision development tends to be perfect
According to the process of the baby's visual development
He may not have seen something that adults can't see
It's that he may not be able to see clearly
At this time, if the child receives some scared information
In the absence of words
It is likely to express their feelings by crying
And the baby's frequent crying at night
It has become what the older generation knows:
The child saw something unclean
Then someone will think
Could it be that babies have visual functions that adults do not have?
Disappeared with gradual deterioration of development?
Someone who thinks this way is a genius
Because there are indeed new studies that show that
Babies under 7 months of age can perceive
Objects that are not visible to large babies and adults
This feature is called "post-visual masking"
（visual backward masking）
What does that mean?
Imagine if a bird appeared in front of your eyes
Well even if it stays for a short time
We can also see it and notice the color of its feathers
But if immediately after this bird comes an airplane appears
Then we might be looking at the plane
Ignoring the color of the bird's feathers
Thus impairing the perception of the bird
When it's fast enough
We won't even be aware of the bird's existence
This kind of object appears because of the immediate following
A phenomenon that results in a phenomenon that affects the perception of the previous object
It's called "post-visual masking."
Even the angle and time of appearance of the aircraft in vision
It doesn't overlap with the birds
This can happen too
This is actually the process of brain development
Gradually, "evolved" to filter out unimportant details
The ability to concentrate attention to give visual focus
In a postdoctoral fellow at Chuo University in Tokyo
The first author of the study, Yusuke Nakajima
(Yusuke Nakashima)领导的研究中
They are for babies from 3-8 months old
Use anti-bunkers to study the development of feedback processing
To test whether the baby will be affected by posterior masking
The researchers showed some images of human faces on computer screens
The time the infant stared at these images was measured
As babies take longer to look at their faces
Researchers can measure the amount of time a baby spends looking at a face
to test if they perceive the face
These faces are presented in two ways:
In one case, a face behind
This is followed by an image of a mask
In this case, if anti-masking occurs
The baby will not be able to see the face
In another case
Nothing appears after the face
In this way, the baby can see that face
The researchers found:
Infants 7-8 months old
Notice the face that follows the image of the mask
- This indicates that anti-masking has taken place
However, babies aged 3-6 months
Even in the case of a human face followed by an image of a mask
You can also feel that face
- This indicates that "post-visual masking" did not occur
The results of the study showed:
The mechanism of visual perception is in the second half of the year of life
There has been a huge change
The results of the study also suggested:
Objects that can be perceived in infancy
It becomes increasingly imperceptible during development
Therefore, it is not what the baby can see
Rather, the feedback processing of young babies is immature
They can only vaguely perceive the outside world
And with age
The brain gradually forgets memories before the age of three
Thus making everyone
Forget the "blurred world" you saw as a child
So, parents should stop being blindly superstitious
Don't be surprised by your child's "abnormal vision"
And use some "home remedies" on children
Subjecting children to "unjustified disasters"
If you really feel that your child has a problem with his vision
You should be sent to the hospital for examination in time
Listen to the doctor's professional explanations