Approved For Release 2000/08/09 : CIA-RDP96-00792R000200040001-1 -- What we are studying is the question of a biological entity having a Magnetic field. First of all as for the strength of the magnetic field, we remember that close to an iron magnet the strength of the magnetic field is about 100 oersted. The magnetic field of the earth is 0.5 oersted. The intensity of the magnetic field generated by living things is 10-® oersted. Changes in the magnetic field can affect a series of functional processes of the living entity. It can have a clear effect on humans as well. However, with the human magnetic field so weak, it is very difficult to be detected or to be affected by another. -- Are you following this line of research? -- The entire world is conducting research. Several major cities in the Soviet Union such as Moscow, HAERKEFU [phonetic], TUOMUSIKE [phonetic], and BUBUNUO [phonetic] have al] begun to conduct this kind of research and how biological magnetic fields assist in clearing up important details in the biological processes. At the same time it is providing new possibilities in medical diagnosis. -- What can be learned from a doctor analyzing a person's magnetic field? Also, how are these magnetic fields generally produced. Normally, the magnetic field only occurs when a magnetic charge is in motion. The different magnetic signals in our bodies are caused by the ion current which occurs simultaneously with nerve impulses. As for magnetic diagnosis, well, at the present time the magnetic signal tapes can be used in studying the heart, brain and muscle signals. Our laboratory has already cooperated with the Soviet Union Academy of Medicine All-Soviet Heart Treatment Science Center in a joint study of the question of the weak magnetic field of the heart. One of our tasks is to accurately locate the focus of various disorders. This will assist in reasonable and effective treatment. -- Do you mean say that you cannot use the extremely simple traditional] methods such as EKG to locate the focus of disorders. -- Currently new methods are required, because the traditional methods can only determine the general lecation of the disorder in the heart, and when modern medicine is conducting targeted treatment, it requires more accuracy. When traditional methods are recording the heart current, it receives interference from different currents from other tissue which can cause serious image distortion. However, it is a different story when using magnetic fields. The magnetic field is like the body is completely transparent. It does not generate any interference or distortion. Therefore, methods of recording the Ihagnetic fields formed by the heart determine specific seats of disease with an error of no more than one millimeter. Prior to these methods, however, in order to record this type of magnetic field it was necessary to insert an electrode into the heart. -- What is the difference between recording the magnetic field of the brain and recording the magnetic field of the heart? 88 Approved For Release 2000/08/09 : CIA-RDP96-00792R000200040001-1
Approved For Release 2000/08/09 : CIA-RDP96-00792R000200040001-1 - The major difficulty in studying the brain is that the brain magnetic Signals are at a very low level (to weak). The intensity of recorded brain magnetic field intensity is only 10-8. oersted. This is only equal to one percent of the intensity of the magnetic field of the heart. Furthermore, it is extremely difficult to differentiate the extremely weak brain magnetic signals from interference several tens of thousands of times as strong. We are presently doing research on a type of new method called search and capture of brain magnetic fields. It is the use of sound, flashes of light and weak electric current to stimulate magnetic reaction from the brain. An even more important task is the study of structure of different regions of the brain and their operational sequence. -- Is there interest in applied medicine toward studying the magnetic fields of the brain? -~ Of course there is interest. For basically the same reasons, the chart of the brain's magnetic field, just as the chart of the heart's magnetic field can precisely locate the seat of a disorder in the brain, and can do it much more accurately than traditional methods of using EEGs. Under many conditions, such as neurosurgery, a chart of the brain magnetic field is extremely important. -- Does this mean that the recording of brain and heart magnetic fields will be adopted by clinical doctors? -- Undoubtedly it will be used in various large hospitals. However, many complex problems must be resolved before they can be put to actual use, especially mass production of super conductor quantum interference (magnetic field) detectors and magnetic field intensity measuring devices. From the surface, this kind of precision instrument will basically be a super conductor loop, with one or two high level connecting apparatus (called JIAOZEFUSUONOFU contacts) [phonetic]. They will all need to be immersed in liquid helium. They would have the ability to detect the weakest of magnetic fields, as weak as 10-12 oersted. Therefore, it can actually be truly called an instrument with super-sensitive abilities. It will be have super sensitivity, and obtain successful results in the study of human super-sensitive ability. This brilliant creation will soon enter the realm of medical common treatment. I am afraid none of us can find suitable words to praise this type of modern medical new technology. The following was extracted from my notes on talks during my visit with lab researcher and physicist and mathematician Assistant Doctor MIUXING [phonetic]. “We are beginning to study the always existing, more accurately the rarely changing, human body magnetic fields. We have completely entered another realm, we have entered the exhaustive study of several micromechanisms of control of body temperature. This is not a shift in interest. We were 89 Approved For Release 2000/08/09 : CIA-RDP96-00792R000200040001-1
Approved For Release 2000/08/09 : CIA-RDP96-00792R000200040001-1 searching for the electric power source for the body's magnetic fields and discovered that the electrical power source is on the skin. Thus, we should analyze its nature, and this unavoidably led to the study of the processes of body temperature control and heat transfer. The skin is a very complex biological living machine. It s a primary object. of our long term research. ~- Both skin and heat control have been studied for dozens of years. Almost everything has been researched. Do you think that all the subtleties and minor details have been discovered? -- However, when we start to take a close look, and conscientiously measure and use the philosophy of physics to evaluate and analyze, we will necessarily discover several significant and major details. At times we may even change the way we view the basic nature of some things. Thus, we want to take clear what is the cause that generates the change in the static potential on the surface of the human body. -- Excuse me for interrupting, but I would like to know where the electrical charge comes from. Where does the body's magnetic field first appear? -- The human body permanent static electric field has heen known about for a long time and has been measured on many occasions. However, there are a number of different interpretations of this phenomenon. There are even people who believe that there are electrets - permanently magnetized electrovalent elements on our skin. Actually, because of the life in our bodies, it can cause the surface skin to have a weak potential of 0.05 volts, and the maximum potential may be as high as ten volts. For example, rubbing the back of the hand briskly several times can generate this result (friction generated electricity). -- Can the use of this type of method to generate electricity generate much more than 10 volts? - Normally not. The electrical field voltage at some spots may be higher, but sparks will occur at the high voltages, and this will restrict the increase of the potential. It is not important to know where the static electrical field on our bodies is generated. The important thing is what causes the static electric field and how is it quickly lost. In this process, the primary role is played by the subcutaneous layer of the skin which is only 40 microns thick. The subcutaneous layer is also an excellent insulating layer. After the surface generates electricity from fiction, it becomes a unique capacitor. The subcutaneous layer is a dielectric. Furthermore, the Jower skin has relatively good conductivity. The changes in potential are conducted throughout the body to create a magnetic field. If the subcutaneous layer generates free electric charge, then there is a “current". When a capacitor discharges, the static electric field is lost. Naturally, this is a macroscopic view, actually the so-called "current" is extremely weak, no more than a few hundred millionths of an ampere. Therefore, the change in the 90 Approved For Release 2000/08/09 : CIA-RDP96-00792R000200040001-1
Approved For Release 2000/08/09 : CIA-RDP96-00792R000200040001-1 potential on the external layer are also extremely slow, and it take several minutes to several tens of minutes to reduce it by half. In the beginning, we carefully studied the nature of the subcutaneous layer. We measured the resistance to he between 10-® and 10-1? ohms per square centimeter. In order for the human body to adapt to changes in the outside temperature, it has two primary control systems. One of these is the sweat gland systems with which we are familiar. When it is hot, after the hypothalamus receives heat signals, it immediately orders the sweat glands to secrete perspiration through the skin. The perspiration continuously evaporates and carries the heat away. The other system is the cold prevention system. When the weather is very cold, the hypothalamus issues orders to speed up blood circulation and intensify biochemical reaction processes to ensure the energy supply. Finally, it even uses shivering methods to alter the heating mechanism. In addition, the skin also has small systems which function independently in some areas. At 0.5 mm below the surface of. the skin, there is a network of capillaries. The dilation or contraction of these capillaries is a primary factor which directly functions to regulate the body temperature. It is responsible for one-third of the heat dissipation. ~- Is a great deal of water evaporated through our skin? -- An adult will perspire 50 grams over a 24 hour period without realizing it. During heavy perspiration, a liter or more can be lost every hour. The area automatic temperature regulating systems can only function within a small range of outside temperatures. For example in a room with a temperature of around 20 degrees Celsius, its operations can reflect a number of important signals such as the blood supply, blood vessel state, the degree of activity in a series of biochemical reaction processes. Furthermore it not only reflects the area epidermis situation, but it can also reflect the situation with certain internal organs. Thus, we need only measure the intensity of perspiration of one piece of skin and we can determine the change in the electric field in the area as well as the blood supply situation in the area. This is the overall situation. At the same time this research can also show changes in interesting biological mechanisms and numerical contrasting relationships. -- Are there remote sensing methods? -- When an electrical field exists, it is possible to detect this at a certain distance. The faster the electrical field disappears, the stronger the conductivity of the surface layer of the skin. The more charge lost, then the more rapidly the water is transported. Naturally, it is only with electrical methods that it is possible to measure the thermosensitivity of the skin. It appears that the skin thermosensitivity is very high, about 0.1 milliwatt/square centimeter. That is to say, the skin can feel the heat from a burning match at a distance of one meter. 91 Approved For Release 2000/08/09 : CIA-RDP96-00792R000200040001-1