However, television and computers should not be in competition with each other. Each provides a separate channel for communication and has its own set of issues and criteria. The study method involves simultaneously videotaping and recording the physiological data of both mother and baby. Currently the physiological data is recorded onto computer, while the video output, overlayed with the physiological traces, is recorded onto video tape. A typical study will use 4 x 195 minute tapes.
Physiological data is backed up to tape.
The video data is reviewed and any movements by mother or baby coded. This takes approximately 15 hours, even using accelerated playback, for a typical 10-12 hour study. The video tapes have no backup. Performing some simple calculations. This equates to 250GB for 12 hours.