Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Steven Raiguel"'
Publikováno v:
The Journal of Neuroscience. 30:15491-15508
Motion is a potent cue for the perception of three-dimensional (3D) shape in primates, but little is known about its underlying neural mechanisms. Guided by recent functional magnetic resonance imaging results, we tested neurons in the fundus of the
Publikováno v:
Cerebral Cortex. 18:1429-1443
Motion is a potent cue for breaking camouflage in the natural world. To understand the neural basis of this phenomenon, one must utilize moving shapes defined by coherent motion of random texture elements against a similar, but stationary texture. To
Publikováno v:
Journal of Neurophysiology. 82:1944-1956
A total of 310 MT/V5 single cells were tested in anesthetized, paralyzed macaque monkeys with moving random-dot stimuli. At optimum stimulus parameters, latencies ranged from 35 to 325 ms with a mean of 87 ± 45 (SD) ms. By examining the relationship
Publikováno v:
NeuroReport. 8:2803-2808
Ninety-one single units were recorded in area MSTd of anesthetized and paralyzed macaques. Receptive fields (RFs) were mapped quantitatively using small patches of moving random dots in 25 different positions (the two-dimensional position test, or P2
Publikováno v:
Proceedings of the National Academy of Sciences. 92:11303-11306
A recurrent theme in the organization of vertebrate visual cortex is that of receptive fields with an associated "silent" opponency component. In the middle temporal area (area MT), a cortical visual area involved in the analysis of retinal motion in
Publikováno v:
European Journal of Neuroscience. 7:2064-2082
The spatial organization of receptive fields in the middle temporal (MT) area of anaesthetized and paralysed macaque monkeys was studied. In all, 288 neurons were successfully recorded. The size and shape of the receptive field (RF) was mapped with s
Publikováno v:
Journal of Neurophysiology. 74:1258-1270
1. Electrophysiological recordings of 68 cells in the middle temporal area MT were made in paralyzed and anesthetized macaque monkeys. 2. Testing with our kinetic boundary stimuli always occurred under optimized conditions. To this end, the preferred
Publikováno v:
Journal of Neurophysiology. 71:1597-1626
1. We recorded and tested quantitatively 65 middle temporal (MT) and 82 middle superior temporal (MST) cells in paralyzed and anesthetized monkeys. 2. Responses to the three elementary optic flow components (EFCs)--rotation, deformation, and expansio
Publikováno v:
European Journal of Neuroscience. 5:1695-1710
We have trained five cats in orientation discrimination using different contours, and compared the deficits caused by lesions of cortical areas 17 and 18 (tier I) to the deficits induced by removal of those areas receiving afferents originating in ar
Publikováno v:
Proceedings of the National Academy of Sciences. 89:2595-2599
Optical flow is a rich source of information about the three-dimensional motion and structure of the visual environment. Little is known of how the brain derives this information. One possibility is that it analyzes first-order elementary components