sensing a condition of at least one non-volatile storage element of a set of non-volatile storage elements, the at least one non-volatile storage element is in communication with a selected word line of a set of word lines, the set of non-volatile storage elements is in communication with the set of word lines; and

biasing a substrate during the sensing, the set of non-volatile storage elements are formed, at least in part, on the substrate, and a level of the biasing varies based on a position of the selected word line in the set of word lines, the biasing comprises applying a voltage to the substrate via a terminal which is connected to the substrate, a level of the voltage varies based on the position of the selected word line in the set of word lines.