How to cook bison burgers (a.k.a. buffalo burgers)?
The temperature is 160 F (71 C) is not referring to the setting of your stove but to the internal temperature that the meat should reach. You measure this using an instant read thermometer. Just put your oven on medium to medium-high heat and shoot for 3 minutes per side and see what temperature it has reached at that time. It will depend on how thick the patties are. 

It's also important to let the meat thaw before using. Don't try to cook any meat frozen. Your burgers should be first thawed in your refrigerator and then brought to room temperature for 30 minutes to an hour prior to cooking.

In case you aren't aware, bison is a much leaner meat than beef and thus benefits greatly from not being cooked well-done. If you trust the quality of your bison shoot for rare to medium-rare.