Calibration and Biocalibration
This chapter discusses the needs for biocalibration. It recognizes the waveforms that appear during biocalibration. The chapter focuses on the biocalibration during a sleep study. Calibration is done to check that all the channels are getting adequate information and are free from artifacts. This should be done before every study. The position of calibration command varies among software provided by different manufacturers. For electrical calibration, people usually pass a current of around 50µV in the Electroencephalogram (EEG) channels and look for the waveform. All the channels must have similar waveform during calibration. After calibration, it is time to check that all channels are working properly, that is, biocalibration. This should be done by providing the commands to the patient and checking that the respective channels are working properly.