Abstract：
:The purpose of this study was to demonstrate the effect of human magnocellular (M)-pathway disruption on global motion perception. Coherence thresholds for global motion direction discrimination in random dot patterns were determined at slow and moderate dot speeds: (1) after adaptation to full-field sinusoidal flicker or a steady gray field, and (2) on a red or a gray background. Adaptation to flicker and a red background increased motion coherence thresholds relative to the gray baseline conditions at both dot speeds. Physiological studies have shown that M cells in the retina and LGN are inhibited by red light and are a main contributor to flicker perception in monkeys. Therefore, our results suggest that interference with processing in the subcortical M pathway disrupts higher-level motion integration.
journal_name
Vision Resjournal_title
Vision researchauthors
Chapman C,Hoag R,Giaschi Ddoi
10.1016/j.visres.2004.06.003subject
Has Abstractpub_date
2004-01-01 00:00:00pages
2551-7issue
22eissn
0042-6989issn
1878-5646pii
S0042-6989(04)00292-5journal_volume
44pub_type
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