Can you invert scrolling up and down when using a mouse or trackpad?

[adambucky]

Hi
When using a mouse or a keyboard with a trackpad with Andoid 5.1- at the moment when sliding 2 fingers on the trackpad upwards, the screen goes up and when sliding downwards the screen goes down - can this be inverted so sliding fingers upwards on the pad moves the screen down and sliding them downwards moves the screen up? Perhaps a change of settings, an extension for example might be able to do this?

Thanks