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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A “blanking effect” for surface features: Transsaccadic spatial-frequency discrimination is improved by postsaccadic blanking
TL;DR: Deubel and Schneider as discussed by the authors found that locational discrimination performance across a saccade is greatly improved by inserting a short postsaccadic blank, but to a smaller amount than the usual blanking effects obtained with locational displacements.
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Computational approaches to sensorimotor transformations
TL;DR: It is shown that this approach provides a unifying insight into the neural basis of three crucial aspects of sensorimotor transformations, namely, computation, learning and short-term memory.
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Perisaccadic remapping and rescaling of visual responses in macaque superior colliculus.
TL;DR: This work has studied the time-course of receptive field changes in the superior colliculus, a brainstem structure responsible for integrating visual and oculomotor signals, and finds that the distribution of the latencies of SC responses to stimuli placed outside the fixation receptive field is bimodal.
Journal ArticleDOI
A Motion Illusion from Two-Dimensional Periodic Patterns
TL;DR: The results showed that patterns having large energy and steep saddle-shaped contrast gradients tended to generate stronger illusions, and the composite pattern made up of the sum of the fundamental and harmonic components exhibited a stronger illusion than either the fundamental or the harmonic pattern.
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Recovering stimulus locations using populations of eye-position modulated neurons in dorsal and ventral visual streams of non-human primates.
TL;DR: It is demonstrated, in dorsal and ventral streams as well as modeling, that target locations can be extracted directly from eye position signals in cortical visual responses without computing coordinate transforms of visual space.
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.