Journal ArticleDOI
Functional properties of neurons in middle temporal visual area of the macaque monkey. I. Selectivity for stimulus direction, speed, and orientation
TLDR
The presence of both direction and speed selectivity in MT of the macaque suggests that this area is more specialized for the analysis of visual motion than has been previously recognized.Abstract:
1. Recordings were made from single units in the middle temporal visual area (MT) of anesthetized, paralyzed macaque monkeys. A computer-driven stimulator was used to make quantitative tests of sel...read more
Citations
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Journal ArticleDOI
Neuronal Population Coding of Movement Direction
TL;DR: The direction of movement was found to be uniquely predicted by the action of a population of motor cortical neurons that can be monitored during various tasks, and similar measures in other neuronal populations could be of heuristic value where there is a neural representation of variables with vectorial attributes.
Journal ArticleDOI
Mechanisms of Visual Attention in the Human Cortex
TL;DR: Functional brain imaging studies reveal that, both in the absence and in the presence of visual stimulation, biasing signals due to selective attention can modulate neural activity in visual cortex in several ways.
Journal ArticleDOI
The analysis of visual motion: a comparison of neuronal and psychophysical performance.
TL;DR: The ability of psychophysical observers and single cortical neurons to discriminate weak motion signals in a stochastic visual display is compared and psychophysical decisions in this task are likely to be based upon a relatively small number of neural signals.
Journal ArticleDOI
Neural Basis of a Perceptual Decision in the Parietal Cortex (Area LIP) of the Rhesus Monkey
TL;DR: In this article, the posterior parietal cortex (area LIP) of two rhesus monkeys were recorded while they discriminated the direction of motion in random-dot visual stimuli and reported their direction judgment by making an eye movement to the appropriate target.
Journal ArticleDOI
A selective impairment of motion perception following lesions of the middle temporal visual area (MT)
William T. Newsome,EB Pare +1 more
TL;DR: The results indicate that neural activity in MT contributes selectively to the perception of motion.
References
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Book ChapterDOI
Reconstructing the Evolution of the Brain in Primates Through the Use of Comparative Neurophysiological and Neuroanatomical Data
TL;DR: In his influential book, Le Gros Clark (1962) maintained that the order Primates cannot be defined by specific attributes that uniquely distinguish its members from the members of other orders but rather can be characterized by evolutionary trends such as the progressive expansion of the brain.
Book ChapterDOI
Physiological Basis of Motion Perception
TL;DR: The discovery in the mammalian visual system of direction-ally selective neurons, single cells that respond differentially to targets moving in different directions through the cells’ receptive fields, has heightened the psychophysicist’s interest in the neural mechanisms of motion.
Journal Article
Factors influencing velocity coding in the human visual-system
Guy Orban,J Dewolf,Hugo Maes +2 more
TL;DR: The U-shaped curve relating differential velocity detection and velocity was preserved at different background levels and different contrasts and was shown not to depend on duration judgments.
Journal ArticleDOI
Photically evoked unit activity in the tectum opticum of the squirrel monkey.
TL;DR: The results showed that the superior colliculus had a definite functional laminar organization and was sensitive to moving objects in the lower portion as well as in the stratum opticum.
Journal ArticleDOI
Masking of motion by broadband and filtered directional noise
Karlene Ball,Robert Sekuler +1 more
TL;DR: In this paper, the authors detected unidirectional motion of isotropic dot patterns following exposure to broadband noise containing all directions of motion, or noise from which certain sets of direction had been filtered.