If you put the electrodes in the right position and you measure in the right way you can detect the electrical activity of the heart and record it on a strip recorder like this one shown here, or display it on a computer.

如果将电极放置正确,并采用正确的方式检测,就能检测到心脏的电活动,并将它记录在像这样的长图记录仪上,或者显示在电脑上

耶鲁公开课 - 生物医学工程探索课程节选

The record for each person was to be punched across the strip, which would then be run through the machine.

ECONOMIST: Millennium issue

The report also calls for a ban of strip cells for suicidal prisoners and for more accurate record-keeping of suicide and self-harm attempts.

BBC: Overcrowding 'encouraging suicide'