We investigate the interaction characteristics and mechanism of electromagnetic radiation field and cerebral nervous system. When the electromagnetic radiation is non-ionization low-frequency electro- magnetic field, the two-state physical system in the cytoskeletal microtubule （MT） can be quantized. The state of information bits in cerebral neurous system is described by density matrix, and the system dynam- ics equation is established and solved. It indicates that when the brain is exposed to non-ionization low-fre- quency electromagnetic f...
