Contralateral visual hemifield representations in the human pulvinar nucleus.

@article{Cotton2007ContralateralVH,
  title={Contralateral visual hemifield representations in the human pulvinar nucleus.},
  author={Philippa L Cotton and Andrew T. Smith},
  journal={Journal of neurophysiology},
  year={2007},
  volume={98 3},
  pages={
          1600-9
        }
}
The pulvinar is a major nucleus of the thalamus. Macaque pulvinar includes two subregions that are connected to the visual cortex and are retinotopically organized, but the organizing principles of the visual portions of the human pulvinar are unknown. We employed two tasks to address the question of whether human pulvinar exhibits spatial organization using event-related functional magnetic resonance imaging. The first was a global-motion discrimination with a rich visual stimulus and the… 
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Using multivoxel pattern analyses on data from two fMRI experiments, it is shown that attention gates both position and orientation information in the pulvinar: attended objects are encoded with high precision, while there is no measurable encoding of ignored objects.
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There is clear evidence that spatial attention increases neural responses to attended stimuli in extrastriate visual areas and, to a lesser degree, in earlier visual areas. Other evidence shows that…
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The results suggest that the extrageniculate pathways of the right hemisphere in humans are involved in filtering out distractors.
Pattern‐motion selective responses in MT, MST and the pulvinar of humans
TLDR
Functional magnetic resonance imaging results demonstrate that MT, MST and the pulvinar are involved in the complex motion integration mechanisms that are triggered by plaid stimuli, which reinforces the concept that integrative computations take place in a distributed neuronal circuit both in cortical and sub‐cortical networks.
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The pulvinar is a prototypic association nucleus that participates in reciprocal cortico-cortical interactions and promotes synchronized oscillatory activity in functionally related areas of the cortex and is an important component of the visual attention network.
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References

SHOWING 1-10 OF 44 REFERENCES
Pulvinar nuclei of the behaving rhesus monkey: visual responses and their modulation.
TLDR
Functional differences between Pdm and the other two areas are demonstrated and suggest that Pdm plays a role in selective visual attention, whereas PI and PL probably contribute to other aspects of visual perception.
Functional imaging of the human lateral geniculate nucleus and pulvinar.
TLDR
The results demonstrate that fMRI at 3 T can be used effectively to study thalamocortical circuits in the human brain and identify regions in the mediodorsal right and left pulvinar that are consistently activated by bilaterally presented flickering checkerboard stimuli.
Pattern–motion selectivity in the human pulvinar
Integration of direction signals of image motion in the superior temporal sulcus of the macaque monkey
TLDR
It is suggested that cells in the cortical area surrounding the middle temporal area (MT) in the superior temporal sulcus (STS) acquire the ability to discover whole events of visual motion by integrating elemental motion information extracted by MT cells.
fMRI Measures of Perceptual Filling-in in the Human Visual Cortex
TLDR
It is proposed that perceptual filling-in recruits high-level control mechanisms to reconcile competing percepts, and alters the normal image-related signals at the first stages of cortical processing.
Functional measurements of human ventral occipital cortex: retinotopy and colour.
TLDR
Functional magnetic resonance imaging was used to identify visual field maps and colour responsivity on the ventral surface and found a visual map of the complete contralateral hemifield in a 4 cm(2) region adjacent to ventral V3; the foveal representation of this map is confluent with that of areas V1/2/3.
Segregated thalamocortical pathways to inferior parietal and inferotemporal cortex in macaque monkey.
TLDR
Paired injections of two different tracers in the inferotemporal and inferior parietal cortex of the same hemisphere revealed a nearly complete segregation of the two populations of labeled neurons in the pulvinar, with only a small region of overlap in PuM, close to the PuM/PuLd border.
Deficits in spatial coding and feature binding following damage to spatiotopic maps in the human pulvinar
We report a patient with unilateral damage to the rostral part of the pulvinar who was impaired in localizing stimuli in the inferior visual field contralateral to the lesion and who made errors in…
Topographic maps of visual spatial attention in human parietal cortex.
TLDR
Visualization of the distribution of temporal phases on a flattened representation of parietal cortex revealed at least two distinct topographically organized cortical areas within the intraparietal sulcus (IPS), each representing the contralateral visual field.
Attentional inhibition of visual processing in human striate and extrastriate cortex
...
1
2
3
4
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