Skip to main content
. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: J Neurosci Methods. 2013 Jun 22;219(1):41–51. doi: 10.1016/j.jneumeth.2013.06.005

Figure 1.

Figure 1

A closed feedback-controlled system maintains a fixed lamp temperature on the underside of a glass floor beneath the hind paw of an unrestrained rat. The parameters of temperature and stimulus duration are entered using a keypad and display. Once triggered, the proportional-integral-derivative controller unit of the stimulator signals the lamp to generate radiant heat onto a thermocouple sensor. The sensor provides real-time temperature input for the controller unit, which in turn, continuously modulates the current to the lamp to correct any error between the measured and user-defined temperatures.