Central-peripheral dichotomy: color-motion and luminance-motion binding show stronger top-down feedback in central vision

Bi, Keyan; Zhang, Yifei; Zhang, Yan-Yu

doi:10.3758/s13414-022-02465-8

Cited by 5 publications

(6 citation statements)

References 76 publications

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“…Topdown feedback might help shape sensory discrimination, especially when that input can elicit ambiguous or alternative perceptual interpretations, such as in this experiment. The feedback is thought to come from higher cortical areas that can re-enter lower cortical areas with additional information on global object con guration, and this interaction with lower visual areas would help disambiguate between the multiple perceptual possibilities 43 , as in predictive coding accounts. In this context, it is important to take into account that adaptation mechanisms, here revealed by negative hysteresis, are in general recognized to be present in earlier visual areas and, on the other hand, memory mechanisms featured by persistence and positive hysteresis, as well as binding of gural elements, may be identi able at high-level regions 3,25 .…”

Section: Discussionmentioning

confidence: 99%

Perceptual binding occurs independently beyond early neural adaptation stages in human color cone pathways

Matias,

Castelhano,

Castelo-Branco

2023

Preprint

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Color perception entails competing temporal context mechanisms such as adaptation versus memory persistence1. Perceptual dynamics in color cone pathways can be studied using the phenomenon of hysteresis, well-known in the framework of physical dynamical systems. It postulates analogous mechanisms: a) visual persistence defining positive hysteresis b) adaptation or habituation (negative hysteresis). Adaptation causes early perceptual switches to competing states. We investigated competition between these mechanisms in human color cone pathways. Color adaptation occurs within early visual pathways up to V4, involved in local scene analysis, but it is unknown if they underlie global perceptual binding of visual elements2. We tested if the neural locus of perceptual binding occurs at visual and memory stages beyond the locus of color adaptation, using a dynamic color matching task in cone contrast space, along Blue-Yellow (S-(L + M) and Green-Red processing channels (L-M). Simple vs Compound stimuli required or not holistic perceptual binding, under visual or memory-guided conditions. Adaptation (negative hysteresis) dominated for the former condition, was stored in memory, but vanished when binding was required either in vision or memory. In sum, cone pathway adaptation mechanisms dominate in early vision, while perceptual binding occurs at a second stage as predicted by the feature integration theory.

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Section: Discussionmentioning

confidence: 99%

Perceptual binding occurs independently beyond early neural adaptation stages in human color cone pathways

Matias,

Castelhano,

Castelo-Branco

2023

Preprint

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“…This suggests that feature-binding does not occur in infants less than six months old and that they perceive the physical information of the external world as it is. Based on the findings that feedback processing seems to be involved in feature-binding [ 5 – 7 ], the results imply that its feedback processing is working in older infants but not younger infants. That is, no misbinding occurred because of immature feedback processing at less than six months old.…”

Section: Discussionmentioning

confidence: 99%

“…Misinding is a visual illusion in which (at least) two types of visual information are incorrectly integrated, consequently producing a perception different from that of the physically presented stimuli [4][5][6][7]. Recently, it has been reported that recurrent processing between the feedforward and feedback processes is involved in the occurrence of feature-binding [5][6][7]. This recurrent processing develops until seven months [10].…”

Section: Introductionmentioning

confidence: 99%

“…Despite the mechanism of feature-binding being one of the main research topics in vision science, it is still under debate. Although little is known about how separately processed feature information is integrated into one perceptual representation, recent evidence suggests that recurrent visual processing using feedforward and feedback loops may be critical for feature-binding [ 5 – 7 ]. That is, these studies support the idea that feature-binding occurs not only in a feedforward manner from lower visual areas but also under feedback from higher visual areas.…”

Section: Introductionmentioning

confidence: 99%

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Infants' visual perception without feature-binding

Tsurumi,

Kanazawa,

Yamaguchi

2023

Proc. R. Soc. B.

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We reveal a unique visual perception before feature-integration of colour and motion in infants. Visual perception is established by the integration of multiple features, such as colour and motion direction. The mechanism of feature integration benefits from the ongoing interplay between feedforward and feedback loops, yet our comprehension of this causal connection remains incomplete. Researchers have explored the role of recurrent processing in feature integration by studying a visual illusion called ‘misbinding’, wherein visual characteristics are erroneously merged, resulting in a perception distinct from the originally presented stimuli. Anatomical investigations have revealed that the neural pathways responsible for recurrent connections are underdeveloped in early infants. Therefore, there is a possibility that younger infants could potentially perceive the physically presented visual information that adults miss due to misbinding. Here, we demonstrate that infants less than half a year old showed no misbinding; thus, they perceived the physically presented visual information, while infants more than half a year old perceived incorrectly integrated visual information, showing misbinding. Our findings indicate that recurrent processing barely functions in infants younger than six months of age and that visual information that should have been originally integrated is perceived as it is without being integrated.

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“…Of note, the differences between central and peripheral vision have extensively been investigated. For example, studies by Zhaoping ( 2017 ) and Bi et al ( 2022 ) identified weaker top‐down feedback in the peripheral vision than in the central vision for visual information of recognition, color‐motion, and luminance‐motion. A top‐down process is also a critical cognitive component in working memory, characterized by manipulating sensory information momentarily to achieve the intended goal.…”

Section: Introductionmentioning

confidence: 99%

Sub‐bundle based analysis reveals the role of human optic radiation in visual working memory

Wang,

et al. 2024

Human Brain Mapping

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White matter (WM) functional activity has been reliably detected through functional magnetic resonance imaging (fMRI). Previous studies have primarily examined WM bundles as unified entities, thereby obscuring the functional heterogeneity inherent within these bundles. Here, for the first time, we investigate the function of sub‐bundles of a prototypical visual WM tract—the optic radiation (OR). We use the 7T retinotopy dataset from the Human Connectome Project (HCP) to reconstruct OR and further subdivide the OR into sub‐bundles based on the fiber's termination in the primary visual cortex (V1). The population receptive field (pRF) model is then applied to evaluate the retinotopic properties of these sub‐bundles, and the consistency of the pRF properties of sub‐bundles with those of V1 subfields is evaluated. Furthermore, we utilize the HCP working memory dataset to evaluate the activations of the foveal and peripheral OR sub‐bundles, along with LGN and V1 subfields, during 0‐back and 2‐back tasks. We then evaluate differences in 2bk‐0bk contrast between foveal and peripheral sub‐bundles (or subfields), and further examine potential relationships between 2bk‐0bk contrast and 2‐back task d‐prime. The results show that the pRF properties of OR sub‐bundles exhibit standard retinotopic properties and are typically similar to the properties of V1 subfields. Notably, activations during the 2‐back task consistently surpass those under the 0‐back task across foveal and peripheral OR sub‐bundles, as well as LGN and V1 subfields. The foveal V1 displays significantly higher 2bk‐0bk contrast than peripheral V1. The 2‐back task d‐prime shows strong correlations with 2bk‐0bk contrast for foveal and peripheral OR fibers. These findings demonstrate that the blood oxygen level‐dependent (BOLD) signals of OR sub‐bundles encode high‐fidelity visual information, underscoring the feasibility of assessing WM functional activity at the sub‐bundle level. Additionally, the study highlights the role of OR in the top‐down processes of visual working memory beyond the bottom‐up processes for visual information transmission. Conclusively, this study innovatively proposes a novel paradigm for analyzing WM fiber tracts at the individual sub‐bundle level and expands understanding of OR function.

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Central-peripheral dichotomy: color-motion and luminance-motion binding show stronger top-down feedback in central vision

Cited by 5 publications

References 76 publications

Perceptual binding occurs independently beyond early neural adaptation stages in human color cone pathways

Perceptual binding occurs independently beyond early neural adaptation stages in human color cone pathways

Infants' visual perception without feature-binding

Sub‐bundle based analysis reveals the role of human optic radiation in visual working memory

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