The signals from the depth electrodes are received by the amplifier. The output signal of the amplifier controls the frequency of the subcarrier oscillator, and the oscillator output in turn controls the frequency of the transmitter. (2) After amplification of the received signal from the transmitter has been demodulated, the composit subcarrier signals are connected to the inputs of the three discriminators, which then separate and demodulate their respective subcarriers to obtain the telemetered analog information. In the instrumentation used in this instance, a 100 microvolt signal at the input of EEG amplifier resulted in a 1-volt output from the corresponding discriminator in the receiver. The analog output signals from the receiver were connected to the inputs of an EEG recorder and a magnetic tape recorder.. A microphone was also mounted in the room with the subjects and conversation was also recorded along with the EEG on magnetic tape. [EW: So much for the idea that human implantation and MILITARY PARTICIPATION therein is only a myth.] Up to Contents -133-