Mouse Scroll Top Down City

Any ideas on how to create a Mouse Scrolling that goes faster when the mouse is closer to the edges of the screen and slower when it is closer to the center?

They are many ways to achieve this
Create two sprite objects(GUI layer and it should be hidden. In the events)

Position one on the area you want it To go slow when scrolling and another on the area you want fast when scrolling (the slow should be positioned at the centre while the fast should be at the edge) so once the Cursor is on the slow object and is scrolling you can make the camera movement slow and once its on the fast object and its scrolling you can make the camera movement fast