[Monitoring of cerebral function. Limits and values]

The Cerebral Function Monitor registers EEG amplitude and frequency variations. The C.F.M.A. described in 1979 produces a more detailed analysis of the EEG amplitude and analyses the frequency of the waveforms into standard bands. The device has many indications in anaesthesia and intensive cares for continuous monitoring of cerebral electrical activity over long periods. Unfortunately it is not as well diffused as it might be.