View source for Template:VisualStimulusProperties

===float DimFactor (rw)===
Determines the contrast ratio between presentation and non-presentation in ''Dim'' and ''Intensify'' modes.
In ''Intensify'' mode, values greater 1 will result in a brighter appearance during presentation; in ''Dim'' mode, values greater 1 will result in a darker appearance during presentation. Due to saturation effects, the result may not be as expected.