Kinder Scientific’s Startle Monitor system uses a state-of-the-art load cell to sense the animal’s startle instead of a piezo sensor used by others’ systems.  This load cell technology more precisely measures the amount of the animal’s response (and does so with the industry’s only objective measure!) as well as the nuances of the animal’s response.  Here is a link to a webinar presented by Michael Kinder showing the importance of the load cell to providing you the best data! http://insidescientific.com/webinars/item/366-advancements-of-startle-response-systems-kinder-scientific.