Journal ArticleDOI
The updating of the representation of visual space in parietal cortex by intended eye movements.
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TLDR
Parietal cortex both anticipates theretinal consequences of eye movements and updates the retinal coordinates of remembered stimuli to generate a continuously accurate representation of visual space.Abstract:
Every eye movement produces a shift in the visual image on the retina. The receptive field, or retinal response area, of an individual visual neuron moves with the eyes so that after an eye movement it covers a new portion of visual space. For some parietal neurons, the location of the receptive field is shown to shift transiently before an eye movement. In addition, nearly all parietal neurons respond when an eye movement brings the site of a previously flashed stimulus into the receptive field. Parietal cortex both anticipates the retinal consequences of eye movements and updates the retinal coordinates of remembered stimuli to generate a continuously accurate representation of visual space.read more
Citations
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Responses to natural scenes in cat V1.
TL;DR: Responses to natural movies show a large variability over time because of activity fluctuations induced by rapid stimulus motion, and it is shown that these fluctuations are not dependent on the detailed spatial properties of the stimuli but depend on their temporal jitter.
Journal ArticleDOI
TMS in the parietal cortex: updating representations for attention and action.
TL;DR: The high temporal resolution of TMS has proved to be a particular strength of the technique and the experiments have led to hypotheses about when circumscribed regions of parietal cortex are critical for specific attentional and sensorimotor processes.
Journal ArticleDOI
Atypical activation of the mirror neuron system during perception of hand motion in autism.
Joëlle Martineau,Frédéric Andersson,Catherine Barthélémy,Jean-Philippe Cottier,Christophe Destrieux +4 more
TL;DR: Evidence of a bilateral greater activation of inferior frontal gyrus during observation of human motion than during rest for the ASD group than for the TD group provides strong support for the hypothesis of atypical activity of the MNS that may be at the core of the social deficits in autism.
Journal ArticleDOI
Distributed model of control of saccades by superior colliculus and cerebellum
TL;DR: A distributed model is presented that produces realistic saccades and accounts for a great deal of neurophysiological data and receives direct feedback from the brain stem and keeps track of the residual motor error, so that it can issue appropriate commands to compensate for incorrect heading.
Journal ArticleDOI
View-invariant object category learning, recognition, and search: how spatial and object attention are coordinated using surface-based attentional shrouds.
TL;DR: A neural model provides a unified mechanistic explanation of how spatial and object attention work together to search a scene and learn what is in it and mechanistically clarifies basic properties of attention shifts (engage, move, disengage) and inhibition of return.
References
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Book
Treatise on Physiological Optics
H. von Helmholtz,P. C. Southall +1 more
TL;DR: A composite thin film resistor is disclosed, including an electrically inert substrate upon which is deposited a nickel-chromium alloy thin film, and an overlying second thin film - which is initially deposited as metallic tantalum - which provides a very high degree of environmental protection with respect to the Ni-Cr film.
Journal ArticleDOI
Memory related motor planning activity in posterior parietal cortex of macaque.
J. W. Gnadt,Richard A. Andersen +1 more
TL;DR: Unit recording studies in the lateral bank of the intraparietal cortex (area LIP) have demonstrated a response property not previously reported in posterior cortex, which appears to represent a memory-related motor-planning signal encoding motor error in the Rhesus monkey.
Journal ArticleDOI
Behavioral enhancement of visual responses in monkey cerebral cortex. I. Modulation in posterior parietal cortex related to selective visual attention
TL;DR: It is suggested that the role of area 7 in visual attention may be mediated by the enhancement of visual responses to selected stimuli, which resembles the psychological phenomenon of selective spatial attention.
Journal ArticleDOI
Parietal association cortex in the primate: sensory mechanisms and behavioral modulations
Journal ArticleDOI
Eye position effects on visual, memory, and saccade-related activity in areas LIP and 7a of macaque
TL;DR: The present results indicate that this modulating effect of eye position may be a general one, as it is found in 3 types of responses in 2 cortical areas, and it is proposed that these eye position effects play an important role in making coordinate transformations for visually guided movement.