1. A small infrared device is attached to the shell of the crab or mussel
2. The crab(s) are kept in a tank with the infrared device hooked up
3. The leads from the infrared devices on the crabs and mussels are hooked to the digital signal processing unit which then feeds signals to a 386 computer running special monitoring and recording
4. The heartbeats are displayed on the screen and are recorded in a database
5. A variety of tests are completed to understand the health of the crab. One of these involves putting the crabs on a shake table for "crab aerobics"
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