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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Eye movement trajectories and what they tell us
TL;DR: It is argued that deviations towards an element are caused by the unresolved competition in the oculomotor system between elements in a visual scene.
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White Matter Microstructure and Atypical Visual Orienting in 7-Month-Olds at Risk for Autism
Jed T. Elison,Sarah Paterson,Jason J. Wolff,J. Steven Reznick,Noah J. Sasson,Hongbin Gu,Kelly N. Botteron,Stephen R. Dager,Annette Estes,Alan C. Evans,Guido Gerig,Heather C. Hazlett,Robert T. Schultz,Martin Styner,Lonnie Zwaigenbaum,Joseph Piven +15 more
TL;DR: Visual orienting latencies were longer in 7-month-old infants who expressed ASD symptoms at 25 months compared with both high-risk negative infants and low-risk infants, and abnormal functional specialization of posterior cortical circuits directly informs a novel model of ASD pathogenesis.
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Neural mechanisms for timing visual events are spatially selective in real-world coordinates
TL;DR: This study provides clear evidence that visual events of subsecond duration are timed by visual neural mechanisms with spatially circumscribed receptive fields, localized in real-world, rather than retinal, coordinates.
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Illusory perceptions of space and time preserve cross-saccadic perceptual continuity
TL;DR: It is suggested that temporal extension of the target's percept is one of the mechanisms that ‘fill in’ the perceptual ‘gap’ during saccadic suppression.
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Visual hallucinatory syndromes and the anatomy of the visual brain
TL;DR: The three visual psycho-syndromes mirror the segregation of hierarchical visual pathways into streams and suggest a novel theoretical framework for future research into the pathophysiology of neuropsychiatric syndromes.
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.