A phototherapy or BRT process and apparatus is provided, which, using a pre-recorded bioresonance frequency or compilation of frequencies, causes an EMR emitter to emit within a biological window of a target organism to positively or negatively affect the organism. The EMR may be generated in one or more LEDs by a device connected to a controller of the EMR emitter which device provides the pre-recorded bioresonance frequency or compilation of frequencies to control the LEDs emitted light in terms of its intensity and/or a frequency or flicker-rate.
