A hierarchical structure of motion system revealed by interocular transfer of flicker motion aftereffects

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• 作者：Nishida ; Shin’ ; ya ; Ashida ; Hiroshi
• 关键词：Motion ; Aftereffect ; Interocular transfer ; Eccentricity ; Attention ; Second-order ; Feature tracking
• 刊名：Vision Research
• 出版年：2000
• 出版时间：February, 2000
• 年：2000
• 卷：40
• 期：3
• 页码：265-278
• 全文大小：778 K

文摘

Interocular transfer of the motion aftereffect (MAE) has been extensively investigated for the purpose of analysing the binocularity of the underlying motion mechanism. Previous studies unanimously reported that the transfer of the classical static MAE is partial, but there is a controversy as to whether the transfer of the flicker MAE (MAE measured using counterphase gratings) is partial or perfect. To gain insight into the discrepancy between studies, we investigated whether the interocular transfer of the flicker MAE is influenced by the MAE measurement method, retinal eccentricity and attention. Our results showed that the transfer was perfect or nearly so when the MAE duration was measured in the central visual field with observers paying attention to the adaptation stimulus, but the transfer was partial when the MAE nulling strength was measured, when the MAE duration was measured in the peripheral visual field, or when the observers’ attention was distracted by a secondary task. These results not only resolve discrepancies between previous studies, but also suggest that the flicker MAE reflects adaptation at multiple stages in the hierarchical architecture of motion processing. Publisher: Elsevier Science Language of Publication: English Item Identifier: S0042-6989(99)00176-5 Publication Type: Article ISSN: 0042-6989 Cited by:

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Footnotes:

1. Present address: College of Letters, Ritsumeikan University, Kyoto 603-8577, Japan.

2. Part of the research was conducted while I.M. and T.W. were respectively a Visiting Student and a Visiting Researcher in the Laboratory for Cognitive Brain Mapping (Dr Keiji Tanaka) in RIKEN.