The role of extrinsic and intrinsic factors in perceptual filling-in of the blind-spot with variegated color and texture stimuli

IF 1.5 4区心理学 Q4 NEUROSCIENCES Vision Research Pub Date : 2024-07-04 DOI:10.1016/j.visres.2024.108452

Amrita Mukherjee , Avijit Paul , Rajarshi Roy , Kuntal Ghosh

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Abstract

Vision scientists dedicated their efforts to unraveling the mechanism of filling-in at the blind-spot (BS) through numerous psychophysical experiments. The prevalent interpretation, emphasizing active filling-in, has spurred extensive research endeavors. In a parallel vein, a pertinent study highlighted the predominance of the nasal Visual Field (VF) over the temporal one and postulated the role of the Cortical Magnification Factor (CMF) in explaining the asymmetry of filling-in. In this study, we first replicated this experiment and then conducted BS-specific psychophysical experiments employing various bi-colored and bi-textured (patterned) stimuli. We observed that nasal dominance is not persistent in the context of the spread of perception for BS filling-in. We posit that the visual information processing priority index (VIPPI), comprising the CMF (an intrinsic factor unaffected by stimulus characteristics) and relative luminance (an extrinsic factor dependent on stimulus characteristics), governs the spread of perception for filling-in in case of diverse neighborhoods of the BS.

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外在和内在因素在不同颜色和纹理刺激盲点知觉填充中的作用。

视觉科学家们致力于通过大量心理物理实验来揭示盲点填充（BS）的机制。流行的解释强调主动填充，激发了广泛的研究努力。与此同时，一项相关研究强调了鼻腔视野（VF）比颞叶视野更重要，并推测皮质放大系数（CMF）在解释填充不对称中的作用。在本研究中，我们首先复制了这一实验，然后利用各种双色和双纹理（图案）刺激进行了针对 BS 的心理物理实验。我们观察到，在 BS 填充感知扩散的背景下，鼻腔优势并不持久。我们推测，视觉信息处理优先指数（VIPPI）由 CMF（不受刺激特征影响的内在因素）和相对亮度（取决于刺激特征的外在因素）组成，在 BS 邻近区域不同的情况下，视觉信息处理优先指数支配着填充感知的扩散。

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来源期刊

Vision Research 医学-神经科学

CiteScore

3.70

自引率

16.70%

发文量

111

审稿时长

66 days

期刊介绍： Vision Research is a journal devoted to the functional aspects of human, vertebrate and invertebrate vision and publishes experimental and observational studies, reviews, and theoretical and computational analyses. Vision Research also publishes clinical studies relevant to normal visual function and basic research relevant to visual dysfunction or its clinical investigation. Functional aspects of vision is interpreted broadly, ranging from molecular and cellular function to perception and behavior. Detailed descriptions are encouraged but enough introductory background should be included for non-specialists. Theoretical and computational papers should give a sense of order to the facts or point to new verifiable observations. Papers dealing with questions in the history of vision science should stress the development of ideas in the field.