An instrument for time synchronisation of data stored by unrelated equipment, in the clinical neurophysiology environment
Today neurophysiology laboratories take advantage from different, general purpose equipment, to store multimedia information pertinent to the ongoing exams [1]. Along with patient's Electroencephalogram (EEG) written down on paper by means of multi-channel polygraphs generically known as EEG machines, it is also common to record the image of the patient throughout the exam, using commercial cameras and video tape recorders (VTR's). Computerised equipment, namely personal computers, are also getting more important every day within these environments; time or frequency domain analysis of the EEG, or support for cognitive tests, are currently performed using these machines.