Ambient lighting is natural light and, where available, it should bathe your whole room. Natural light improves psychological wellbeing and keeps our internal body clock in check. If you have few or smaller windows in your bedroom, there are ways to maximise the light coming through by placing a mirror opposite them to help reflect light into the room or, use lighter curtains or blinds.
Of course, when the sun goes down, you’ll need another light source, which is why you need ‘artificial’ ambient lighting. Your ceiling lights serve this purpose and should provide the room with overall illumination, making the room look larger and spreading the light more evenly.
Ceiling lights on a dimmer are great, allowing you to control the brightness depending on the time of day. In the mornings you’re more likely to want bright light, whilst in the evening it’s about soft mood lighting.