Specialized Color Modules in Macaque Extrastriate Cortex

@article{Conway2007SpecializedCM,
  title={Specialized Color Modules in Macaque Extrastriate Cortex},
  author={Bevil R. Conway and Sebastian Moeller and Doris Y. Tsao},
  journal={Neuron},
  year={2007},
  volume={56},
  pages={560-573}
}

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References

SHOWING 1-10 OF 74 REFERENCES
Color architecture in alert macaque cortex revealed by FMRI.
TLDR
Functional magnetic resonance imaging in the alert macaque is used, giving a whole brain perspective of color processing in the healthy brain, and results suggest that color depends on a connected ventral-stream pathway involving at least V1, V2, V4, and PITd.
Retinotopy and color sensitivity in human visual cortical area V8
TLDR
The location of the human color-selective region did not match the location of area V4 (neither its dorsal nor ventral subdivisions), as extrapolated from macaque maps, and instead this region coincides with a new retinotopic area that is called 'V8', which includes a distinct representation of the fovea and both upper and lower visual fields.
Search for color 'center(s)' in macaque visual cortex.
TLDR
Testing in macaque visual cortex found V4 was not uniquely specialized for color processing, but areas located antero-ventral to V4 (in/near TEO and anterior TE) showed more color-biased activity.
Is there a high concentration of color-selective cells in area V4 of monkey visual cortex?
TLDR
The results do not support recent claims that V4 is specialized in the detailed analysis of color information, and one-fourth of V4 cells could not be systematically driven with the various stimuli used.
Faces and objects in macaque cerebral cortex
TLDR
It is found that macaques do have discrete face-selective patches, similar in relative size and number to face patches in humans, and these results suggest that humans and macaques share a similar brain architecture for visual object processing.
A direct demonstration of functional specialization in human visual cortex
TLDR
PET is used to demonstrate directly the specialization of function in the normal human visual cortex, and provides direct evidence to show that, just as in the macaque monkey, different areas of the human prestriate visual cortex are specialized for different attributes of vision.
Neuronal selectivities to complex object features in the ventral visual pathway of the macaque cerebral cortex.
TLDR
It is suggested that local neuronal networks in V4 and posterior IT play an essential role in the formation of selective responses to complex object features.
An fMRI version of the Farnsworth-Munsell 100-Hue test reveals multiple color-selective areas in human ventral occipitotemporal cortex.
TLDR
A functional magnetic resonance imaging version of a clinical test commonly used to assess achromatopsia, the Farnsworth-Munsell 100-Hue test, was created and several areas in ventral cortex were identified, suggesting that attention influences activity in color-selective areas.
Color selectivity of neurons in the inferior temporal cortex of the awake macaque monkey
TLDR
The results suggest that color is an important factor in the role that IT cortex plays in the object recognition, and there was a tendency for more color-selective cells to be less sensitive to white and desaturated cyans.
...
1
2
3
4
5
...