Using the probe antenna of the applicator, radio frequency signals (RFS) of the human brain are recorded. A method for digital processing of recorded RFS in the LabVIEW environment using spectral and bispectral analysis is proposed. As a result of spectral analysis, it was revealed that the human brain emits RFR in the megaHertz range, and as evidenced by the results of bispectral analysis, some groups of spectral components of RFR of the brain exhibit an internal correlation. The results of these studies can be useful for identifying fast processes in the human brain, for understanding the nature of these processes, and, as a result, for the diagnosis and treatment of various human diseases associated with the brain.