The ornamental design for a physiologicalsensor for placement on the skin of humans or animals to detect electrical activity in the localized region thereof, as shown.
FIG. 1 is a perspective view of a physiological sensor for placement on the
skin of humans or animals to detect electrical activity in the localized
region thereof;
FIG. 2 is a side elevational view of FIG. 1, the opposite side being a
mirror image thereof;