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Cited by 43Visual perception and processing mechanismsMultisensory perception and integrationMotor Control and Adaptation

Bloch’s law and the dynamics of feature fusion

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Scharnowski, Frank, Hermens, Frouke, Herzog, Michael H.·2007·Vision Research
DOI 10.1016/j.visres.2007.05.004
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Abstract

How the visual brain integrates temporally dispersed information is an open question. Often, it is assumed that the visual system simply sums light over a certain period of time (e.g. Bloch's law). However, in feature fusion, information presented later dominates, suggesting complex temporal dynamics that cannot be described by simple energy summation. For example, if two verniers are presented in rapid succession at the same location, they are not perceived individually but they fuse to one single vernier. The perceived offset of the fused vernier is a combination of the offsets of the two presented verniers, with the later one dominating. Here, we show that indeed, Bloch's law does not hold across verniers in a sequence. However, changes in the luminance of a single vernier can be compensated for by changes in its duration in accordance with Bloch's law. We present a simple model to demonstrate that these findings can be explained by decaying neural activation.

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  • When LED irradiance was reduced, there was an intensity-dependent decrease in the magnitude of the dLight1 peak and an increase in the response latency.

    “When LED irradiance was reduced, we observed an intensity-dependent decrease in the magnitude of the dLight1 peak and an increase in the response latency (Figure 2E–F), consistent with Bloch’s law of temporal summation in mammalian photoreceptors (Scharnowski et al., 2007; Donner, 2021).”

    From Ventral striatum dopamine release encodes unique properties of visual stimuli in mice (2023) · cites this paper as Scharnowski et al., 2007

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Authors
Scharnowski, F., Hermens, F., & Herzog, M. H.
Affiliations
École Polytechnique Fédérale de Lausanne (CH)
Corresponding author
Scharnowski, Frank
ORCID
Venue
Vision Research
Publisher
Elsevier BV
Published
2007-08
Volume
47
Issue
18
Pages
2444-2452
ISSN
0042-6989 (ISSN-L)
DOI
10.1016/j.visres.2007.05.004
OpenAlex
W1977788737
Cited by
43
References
40
Citations by year
2026: 4 · 2025: 3 · 2024: 2 · 2023: 3 · 2021: 2 · 2020: 2 · 2019: 2 · 2018: 2 · 2017: 1 · 2016: 3 · 2014: 4 · 2013: 6 · 2012: 4
FWCI
0.83
Type
journal article
Language
en
Open access
Licence
Locations
  • Vision Research (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
Keywords
Bloch's law, feature fusion, temporal integration
MeSH terms
Adult, Female, Form Perception, Humans, Lighting, Male, Models, Neurological, Photic Stimulation, Psychophysics, Time Factors, Time Perception, Visual Cortex

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