Straightness as the Main Factor of the Hermann Grid Illusion

@article{Geier2008StraightnessAT,
  title={Straightness as the Main Factor of the Hermann Grid Illusion},
  author={J{\'a}nos Geier and L{\'a}szl{\'o} Bern{\'a}th and Mariann Hud{\'a}k and L{\'a}szl{\'o} S{\'e}ra},
  journal={Perception},
  year={2008},
  volume={37},
  pages={651 - 665}
}
The generally accepted explanation of the Hermann grid illusion is Baumgartner's hypothesis that the illusory effect is generated by the response of retinal ganglion cells with concentric ON–OFF or OFF–ON receptive fields. To challenge this explanation, we have introduced some simple distortions to the grid lines which make the illusion disappear totally, while all preconditions of Baumgartner's hypothesis remain unchanged. To analyse the behaviour of the new versions of the grid, we carried… 

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References

SHOWING 1-10 OF 15 REFERENCES
The Hermann Grid Illusion Revisited
TLDR
An alternative theory is proposed according to which the illusory effect is brought about by the manner in which S1 type simple cells in primary visual cortex respond to the grid, which adequately handles many of the facts delineated in this paper.
Global Factors in the Hermann Grid Illusion
TLDR
The results suggest that a purely local model for the Hermann grid illusion is not a complete explanation, and global factors must be involved.
The Hermann Grid Illusion: A Tool for Studying Human Perceptive Field Organization
TLDR
The Hermann grid illusion is weakened when the grid is presented diagonally, which suggests a contribution by the orientation-sensitive cells in the lateral geniculate nucleus and visual cortex, and is consistent with the reduction of the center—surround antagonism in retinal receptive fields.
Variations on the Hermann Grid: An Extinction Illusion
TLDR
When the white disks in a scintillating grid are reduced in size, and outlined in black, they tend to disappear, and the grey alleys seem to be continuous, generating grey crossings that are not actually present.
Feature detection in human vision: a phase-dependent energy model
This paper presents a simple and biologically plausible model of how mammalian visual systems could detect and identify features in an image. We suggest that the points in a waveform that have unique
Neurophysiological and Psychophysical Correlates in Vision Research
TLDR
The visual laws of simultaneous and successive contrast, of binocular vision, and most principles of colour vision were discovered by analysing visual perception in human subjects by means of psychophysical methods.
Neural dynamics of 1-D and 2-D brightness perception: A unified model of classical and recent phenomena
TLDR
The simulations indicate how configural image properties trigger interactions among spatially organized contrastive, boundary segmentation, and filling-in processes to generate emergent percepts, providing the first unified mechanistic explanation of 1-D and 2-D brightness phenomena.
Perceived diagonals in grids and lattices
Vision
`̀ Indirekte Gro« benbestimmung der rezeptiven Felder der Retina beim
  • 1960
...
...