Research has shown that the phenomenal brightness increase while viewing through yellow lenses does indeed exist, This study explores this occurrence through the use of the visual evoked response (VER) to objectively demonstrate the existence of the neurophysiological correlate to explain the perceived increase in brightness. The results showed minimal electrophysiological changes that would correlate with the subjective brightness reported by all the participants. It appears that a neurophysiological correlation of the brightness is not detectable with the VER as measured urider the conditions of this study.
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