A control unit of an operation detection device detects an operation on a ring-shaped guide member is started on the basis of a detection result of a sensor panel, excludes a resting region corresponding to a region where the finger rested on an upright portion can be positioned from a region where a touch is enabled before the start of the operation on the ring-shaped guide member is detected, and includes the resting region in the region where the touch is enabled after the start of the operation on the ring-shaped guide member is detected.