metacontrast
noun
meta·con·trast
ˌmet-ə-ˈkän-ˌtrast 
: a reduction in the perceived brightness of a visual stimulus when followed immediately by an adjacent visual stimulus
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“Metacontrast.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/metacontrast. Accessed 3 Nov. 2025.
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