Fixated on the ceiling lights!

Eddee has been barking his fool head off at the ceiling light fixtures ... and the lights are not even turned on! I have tried giving him treats when he looks at them and does not bark. I have tried to find his threshold ... but it seems it is not working.

I have left the room with him thinking he would forget .... not so ... soon as I go back into the room ... he starts his growling and barking.

I even got up and touched the light fixture and pretended the treats came out of the light!!! This is our bedroom ... we sleep in here at night.

Any suggestions? This just started this morning.............