Evidence for circumnuclear starbursts in spiral galaxies can take the form of a blue excess near the nucleus, but more frequently (because of dust extinction) H I or radio continuum emission. Such bursts are quite common, even in objects with no interacting companions. One consequence of a burst is to sweep gas outward from the inner zone, so further bursts (and perhaps the initial one) need to be resupplied with gas. This can be effected via a nonaxisymmetric gravitational potential, not necessarily a bar, in the nuclear bulge. Searching for these nonaxisymmetric features, two-dimensional photometry has been obtained from CCD maps in B, V, R, I, and Z bands, for a set of galaxies which have undergone starburst activity.