A gyroscope which comprises first and second proof masses aligned on a first lateral axis, third and fourth proof masses are aligned on a second lateral axis, and central and peripheral anti-phase coupling structures which synchronize a first and a second oscillation mode in this four-mass system. Each central x-axis anti-phase structure and each central y-axis anti-phase structure comprises an in-plane seesaw with a central elongated bar which is suspended from at least one central anchor point with at least one central seesaw suspender which allows the central elongated bar to rotate in the device plane about an axis which is perpendicular to the device plane.