V1 Neurons Signal Acquisition of an Internal Representation of Stimulus Location

@article{Sharma2003V1NS,
  title={V1 Neurons Signal Acquisition of an Internal Representation of Stimulus Location},
  author={Jitendra Sharma and Valentin Dragoi and Joshua B. Tenenbaum and Earl K. Miller and Mriganka Sur},
  journal={Science},
  year={2003},
  volume={300},
  pages={1758 - 1763}
}
A fundamental aspect of visuomotor behavior is deciding where to look or move next. Under certain conditions, the brain constructs an internal representation of stimulus location on the basis of previous knowledge and uses it to move the eyes or to make other movements. Neuronal responses in primary visual cortex were modulated when such an internal representation was acquired: Responses to a stimulus were affected progressively by sequential presentation of the stimulus at one location but not… 
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References

SHOWING 1-10 OF 74 REFERENCES
Oculocentric spatial representation in parietal cortex.
TLDR
The results indicate that LIP can analyze visual space without ever forming a representation of absolute target position.
Gaze direction controls response gain in primary visual-cortex neurons
TLDR
It is shown that, for half the cells recorded in area V1 of behaving monkeys, the classically described visual responses are strongly modulated by gaze direction, and neural changes were most often present at the beginning of the visual response, suggesting a feedforward gain control by eye position signals.
Updating of the visual representation in monkey striate and extrastriate cortex during saccades
  • Kae Nakamura, C. Colby
  • Biology, Psychology
    Proceedings of the National Academy of Sciences of the United States of America
  • 2002
TLDR
Results indicate that extrastriate visual areas are involved in the process of remapping, and show that remapping was very rare in striate cortex.
Encoding of spatial location by posterior parietal neurons.
The cortex of the inferior parietal lobule in primates is important for spatial perception and spatially oriented behavior. Recordings of single neurons in this area in behaving monkeys showed that…
Neural basis of a perceptual decision in the parietal cortex (area LIP) of the rhesus monkey.
We recorded the activity of single neurons in the posterior parietal cortex (area LIP) of two rhesus monkeys while they discriminated the direction of motion in random-dot visual stimuli. The visual…
Dynamics of neuronal sensitivity in visual cortex and local feature discrimination
TLDR
This work examined the perceived changes in orientation induced by brief exposure to oriented image patterns in monkeys and humans, and used reverse correlation to investigate dynamic changes in neuronal sensitivity in the primary visual cortex (V1) of behaving monkeys.
Neural computation of log likelihood in control of saccadic eye movements
THE latency between the appearance of a visual target and the start of the saccadic eye movement made to look at it varies from trial to trial to an extent that is inexplicable in terms of ordinary…
Responses of neurons in primary visual cortex are modulated by eye position.
TLDR
Variability in excitability associated with eye position is a wide-spread phenomenon, having been observed in the lateral geniculate nucleus, V1, and extrastriate cortex, and consistent with the belief that such variability is utilized in constructing a head-centered frame of reference from a retinotopic input.
The Role of the Lateral Intraparietal Area of the Monkey in the Generation of Saccades and Visuospatial Attention
TLDR
Although neurons in LIP have been implicated as being directly involved in the generation of saccadic eye movements, their activity does not predict where, when, or if a saccade will occur; the ensemble of activity in Lip does accurately describe the locus of attention.
Ocular fixation and visual activity in the monkey lateral intraparietal area
TLDR
Results are consistent with the hypothesis of an oculomotor-attentional network contributing to fixation engagement and disengagement in a subregion of LIP.
...
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3
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...