biostudies-literatureUnknown62(15)Wang X<h4>Purpose</h4>It has been suggested that amblyopes present impaired motion extrapolation mechanisms. In this study, we used the flash grab effect (FGE), the illusory mislocalization of a briefly flashed stimulus in the direction of a reversing moving background, to investigate whether the amblyopic visual system can correct overextrapolation.<h4>Methods</h4>Thirteen amblyopes and 13 control subjects participated in the experiment. We measured the monocular FGE magnitude for each subject. Two spatial frequency (2 and 8 cycles), two texture configurations (square wave or sine wave), and two speed conditions (270 degrees/s and 67.5 degrees/s) were tested. In addition, control subjects were further tested in reduced luminance conditions.<h4>Results</h4>Compared with controls, amblyopes exhibInvestigative ophthalmology & visual science20https://www.ebi.ac.uk/biostudies/studies/S-EPMC8711015biostudies-literatureDelayed Correction for Extrapolation in Amblyopia.PMC8711015Liu LWang XLiao MSong YReynaud AfalseDelayed Correction for Extrapolation in Amblyopia.<h4>Purpose</h4>It has been suggested that amblyopes present impaired motion extrapolation mechanisms. In this study, we used the flash grab effect (FGE), the illusory mislocalization of a briefly flashed stimulus in the direction of a reversing moving background, to investigate whether the amblyopic visual system can correct overextrapolation.<h4>Methods</h4>Thirteen amblyopes and 13 control subjects participated in the experiment. We measured the monocular FGE magnitude for each subject. Two spatial frequency (2 and 8 cycles), two texture configurations (square wave or sine wave), and two speed conditions (270 degrees/s and 67.5 degrees/s) were tested. In addition, control subjects were further tested in reduced luminance conditions.<h4>Results</h4>Compared with controls, amblyopes exhib2021-01-01T00:00:00Z2021 Dec2025-04-19T20:55:53.864Z2022-02-11T15:15:55.869ZS-EPMC87110153493206010.1167/iovs.62.15.20