Introduction: What are the benefits of dolphin prenatal education? In recent years, some media have claimed that dolphin prenatal training has a very good effect on promoting fetal development, and it has also attracted the pursuit of countless pregnant mothers. What are the benefits of dolphin prenatal education? Let’s take a look at the experts’ explanations.
Expectant mothers in Peru have launched a new trend in prenatal education - dolphin prenatal education. Scientists have found that fetuses developing in the womb can respond to the sounds of dolphins. Dolphin calls are beneficial to stimulating fetal brain activity and can improve the fetus's organ perception to a certain extent. Therefore, many expectant mothers like to have close contact with dolphins with their big bellies raised. Relevant personnel also train dolphins to get close to pregnant women and make sounds to the abdomen of expectant mothers.
According to the Associated Press, cute and spiritual dolphins have always been loved by people. Now Peruvian scientists have discovered that the ultrasonic calls emitted by dolphins can stimulate the brain development of the fetus. Therefore, pregnant women in Peru are now There is a craze for interacting with dolphins for prenatal education.
After long-term research, Peruvian scientist Yalan said: "The energetic dolphins will use ultrasonic calls to stimulate the development of the fetus, especially the baby still in the womb, and the brain movement will be more flexible as a result." "
The cute dolphins are actually helpful for prenatal education. After hearing the news, many pregnant women in Peru came to have "close contact" with the dolphins with their big bellies. Peruvian pregnant woman Galiani said: "I can even feel the reaction of the baby in my belly to the stimulation of dolphin sounds."
What is the principle of this?
Dolphins belong to the family Delphinidae of the class Mammalia, order Cetaceans, and suborder toothed whales. There are currently nearly 62 species in the world, distributed in various ocean systems. Dolphins like to live in groups, have amazing hearing and ultrasonic echolocation systems, and have superb swimming and diving skills.
The dolphin’s brain is by far the most developed of all animals except humans. Anatomical findings revealed that there are many deep grooves on the surface of its cerebral cortex, and the number of neuronal cells is no less than that of humans and more than that of chimpanzees; Dolphins can work on one part of their brain while resting on the other, so they can stay awake all day or for a lifetime, which is something humans can't achieve! In addition, there is a giant bulge on the forehead of the dolphin. It actually acts as an "acoustic lens", that is, it focuses the ultrasonic beam and sends it out. When it encounters the target, it is reflected back and is reflected by its ears or other organs on the head. take over.
Why are dolphins good for brain development?
This is because dolphins can emit high-frequency ultrasonic waves ranging from 2,000 to 100,000 Hz (or even more than 300,000 Hz). This sound wave can greatly activate the "dormant" nerves in the human brain. It has a good promoting effect and medical value for the central nervous system of developing fetuses and children.
According to recording data, dolphins generally use ultrasonic waves with a frequency of 200,000 to 350,000 Hz for "communication and dialogue." This frequency range is obviously incomprehensible to human hearing. But why can we hear the "calls" of dolphins underwater? Research has found that dolphins can emit more than 32 different sounds, and each one has its own special call used to identify its "identity". What we hear is only the easily perceptible low-frequency sound part. Dolphins are particularly friendly, patient, approachable and cute to humans!
The ideal dolphin therapy should be to have the dolphins close to the head of the child or the belly of the pregnant woman, listen to the sweet sounds, or swim, play and play with the dolphins together. The trainer said that dolphins like and can communicate with children because dolphins are extremely intelligent animals with advanced thinking abilities. The intelligence of an adult dolphin is equivalent to that of a child between 6 and 8 years old. The dolphin's temperament is also very gentle. . However, due to limited conditions, most people are still unable to enjoy this treatment.
Do dolphins really understand and be able to implement prenatal education? Some experts have expressed strong doubts about this. He reminded pregnant women not to follow the trend, lest they harm their babies by “bringing blessings to disaster”.
Experts clearly pointed out: “Including playing music through the abdominal wall of pregnant women, all behaviors that use sound waves to act on the fetus to artificially affect its growth and development are professionally considered medical interventions.
In this case, the music and playing tools used become medical technology and equipment, which must undergo necessary research and animal testing to prove their scientific nature, form prototypes and product standards, and pass the inspection by the medical device quality inspection agency. Only after sufficient human samples have been tested and approved by the Food and Drug Administration can it be produced and applied as a medical device. Not just any sound wave, anyone can use it for so-called prenatal education. "
Can the sound waves emitted by dolphins enter the mother's body?
Are the sound waves emitted by dolphins so magical? According to experts, there is a blowhole diagonally above the dolphin's head, through which Controlling the closure and size of the holes can change the waveform, intensity and frequency of the sound waves emitted.
There are three types of sound waves emitted by dolphins. One is whistle, with a frequency of 5 kilohertz to 15 kilohertz; The second type is burst pulse sound; the third type is click sound, with a frequency of 0.25 kilohertz to 220 kilohertz. Whistle and burst pulse sound are mainly used for communication and communication. The burst pulse sound wave can be very strong, reaching up to 200 kilohertz. Prey is stunned and killed, while clicks are mainly used for target location. It can be seen that the sound waves emitted by dolphins have a wide range of frequencies, including audible sound waves below 20 kilohertz and ultrasonic waves greater than 20 kilohertz. For the dolphin's own survival.
Since it is claimed that the sound waves emitted by dolphins can stimulate the brain development of the fetus, can the sound waves emitted by dolphins enter the mother's body and reach the fetus?
Experts say that due to the huge difference in acoustic impedance between air and human tissue, most of the sound waves emitted in the air are reflected back into the air when they reach the interface between the two, and very little of them can enter the human body. When performing ultrasound examinations in hospitals, a layer of coupling agent that matches the impedance of human tissue is applied to the skin. The purpose is to squeeze out the air between the probe and the skin so that the ultrasound waves can smoothly enter the human body.
Compared with the two, the part of music played in the air that can enter the body of a pregnant woman is very weak, while the sound waves emitted by dolphins, including audible sound and ultrasound, enter the human body much more easily due to the presence of seawater as a coupling agent.
It is worth mentioning that although the sonar of dolphins is strong, compared with modern large-scale sonar equipment and B-ultrasound machines, the dose is still very small, so it is absolutely beneficial and harmless when used for treatment! All of the above are the physical, physiological and psychological basis for implementing "dolphin therapy".