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A selective impairment of motion perception following lesions of the middle temporal visual area (MT)

by William T. Newsome, Edmond B. Park - JOURNAL OF NEUROSCIENCE , 1988
"... Physiological experiments indicate that the middle temporal visual area (MT) of primates plays a prominent role in the cortical analysis of visual motion. We investigated the role of MT in visual perception by examining the effect of chemical lesions of MT on psychophysical thresholds. We trained rh ..."
Abstract - Cited by 202 (5 self) - Add to MetaCart
Physiological experiments indicate that the middle temporal visual area (MT) of primates plays a prominent role in the cortical analysis of visual motion. We investigated the role of MT in visual perception by examining the effect of chemical lesions of MT on psychophysical thresholds. We trained

Functional analysis of human MT and related visual cortical areas using magnetic resonance imaging

by Roger B. H. Tootell, Kenneth K. Kwong, Rafael Malach, Richard T. Born, Thomas J, Bruce R. Rosen, John W. Belliveaul - Journal of Neuroscience , 1995
"... Using noninvasive functional magnetic resonance imaging (fMRI) techniques, we analyzed the responses in human area MT with regard to visual motion, color, and luminance contrast sensitivity, and retinotopy. As in previous PET studies, we found that area MT responded selectively to moving (compared t ..."
Abstract - Cited by 184 (7 self) - Add to MetaCart
Using noninvasive functional magnetic resonance imaging (fMRI) techniques, we analyzed the responses in human area MT with regard to visual motion, color, and luminance contrast sensitivity, and retinotopy. As in previous PET studies, we found that area MT responded selectively to moving (compared

A Model of Neuronal Responses in Visual Area MT

by Eero P. Simoncelli, David J. Heeger , 1997
"... Electrophysiological studies indicate that neurons in the Middle Temporal (MT) area of the primate brain are selective for the velocity of visual stimuli. This paper describes a computational model of MT physiology, in which local image velocities are represented via the distribution of MT neuronal ..."
Abstract - Cited by 79 (5 self) - Add to MetaCart
Electrophysiological studies indicate that neurons in the Middle Temporal (MT) area of the primate brain are selective for the velocity of visual stimuli. This paper describes a computational model of MT physiology, in which local image velocities are represented via the distribution of MT neuronal

Perceptually bistable threedimensional figures evoke high choice probabilities in cortical area MT

by Jonathan V Dodd , Kristine Krug , Bruce G Cumming , Andrew J Parker - J Neurosci , 2001
"... The role of the primate middle temporal area (MT) in depth perception was examined by considering the trial-to-trial correlations between neuronal activity and reported depth sensations. A set of moving random dots portrayed a cylinder rotating about its principal axis. In this structure-from-motio ..."
Abstract - Cited by 48 (2 self) - Add to MetaCart
The role of the primate middle temporal area (MT) in depth perception was examined by considering the trial-to-trial correlations between neuronal activity and reported depth sensations. A set of moving random dots portrayed a cylinder rotating about its principal axis. In this structure

Center-surround antagonism based on disparity in primate area MT

by David C. Bradley, Richard A. Andersen - J. Neurosci , 1998
"... Most neurons in primate visual area MT have a large, modulatory region surrounding their classically defined receptive field, or center. The velocity tuning of this “surround ” is generally antagonistic to the center, making it potentially useful for detecting image discontinuities on the basis of d ..."
Abstract - Cited by 32 (0 self) - Add to MetaCart
Most neurons in primate visual area MT have a large, modulatory region surrounding their classically defined receptive field, or center. The velocity tuning of this “surround ” is generally antagonistic to the center, making it potentially useful for detecting image discontinuities on the basis

Functional analysis of V3a and related areas in human visual cortex

by Roger B. H. Tootell, Janine D. Mendola, Nouchine K. Hadjikhani, Patrick J. Ledden, Arthur K. Liu, Martin I. Sereno, Anders M. Dale - Journal of Neuroscience , 1997
"... Using functional magnetic resonance imaging (fMRI) and cortical unfolding techniques, we analyzed the retinotopy, motion sensitivity, and functional organization of human area V3A. These data were compared with data from additional human cortical visual areas, including V1, V2, V3/VP, V4v, and MT (V ..."
Abstract - Cited by 117 (6 self) - Add to MetaCart
appears quite high in human areas V3 and V3A. Key words: fMRI; V3A; retinotopy; motion selectivity; visual cortex; MT/V5; human; primate After cortical visual areas V3 and V4 were identified and named in macaque monkeys, another region was discovered between them and named “V3 accessory ” (V3A) (Van Essen

Organization of disparity-selective neurons in macaque area MT

by Gregory C. Deangelis, William T. Newsome - Journal of Neuroscience , 1999
"... Neurons selective for binocular disparity are found in a number of visual cortical areas in primates, but there is little evidence that any of these areas are specialized for disparity processing. We have examined the organization of disparity-selective neurons in the middle temporal visual area (MT ..."
Abstract - Cited by 41 (0 self) - Add to MetaCart
Neurons selective for binocular disparity are found in a number of visual cortical areas in primates, but there is little evidence that any of these areas are specialized for disparity processing. We have examined the organization of disparity-selective neurons in the middle temporal visual area

A Selection Model for Motion Processing in Area MT of Primates

by Steven J. Nowlaw, Terrence J. Sejnowski
"... A computational model for motion processing in area MT is presented that is based on the observed response properties of cortical neurons and is consistent with the visual perception of partially occluded and transparent moving stimuli. In contrast to models of motion processing that assume spatial ..."
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are similar to those observed in primates. [Key words: visual cortex, network model, motion processing, area MT, motion transparency, nonclassical receptive fields] Our ability to process rapidly the complex and confusing motion signals in visual scenes is impressive. We can estimate motion

Feature attention for binocular disparity in primate area MT depends on tuning strength

by Douglas A Ruff , Richard T Born
"... Ruff DA, Born RT. Feature attention for binocular disparity in primate area MT depends on tuning strength. J Neurophysiol 113: 1545-1555, 2015. First published December 10, 2014 doi:10.1152/jn.00772.2014.-Attending to a stimulus modulates the responses of sensory neurons that represent features of ..."
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Ruff DA, Born RT. Feature attention for binocular disparity in primate area MT depends on tuning strength. J Neurophysiol 113: 1545-1555, 2015. First published December 10, 2014 doi:10.1152/jn.00772.2014.-Attending to a stimulus modulates the responses of sensory neurons that represent features

Encoding of Dynamic Visual Stimuli by Primate Area MT Neurons

by Heiko Stemmann A, Winrich A. Freiwald A, Aurel Wannig A, Erich L. Schulzke B, Christian W. Eurich B
"... Neural stimulus selectivity is thought to be optimized for the representation of real-world stimuli. Neural coding properties, therefore, may adapt to different environments. Here, we address the question if tuning curves depend on the statistics of visual stimuli. This is done by studying the direc ..."
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the directional tuning of macaque area MT neurons exposed to dynamic motion stimuli of two different direction progression statistics. Despite an apparent difference of tuning curves across stimulus conditions, our results support the view that the underlying encoding system is robust and subject to only
Results 1 - 10 of 122