Transcripts/2_4 1
... a. Imagine that you are looking out at the visual world and this is the point you are looking at. Here is the fovea, here is the periphery. You also have these monocular crescents. b. The eyes mostly see the same thing, but not quite. Ex: The left eye gets blocked looking to the right because the no ...
... a. Imagine that you are looking out at the visual world and this is the point you are looking at. Here is the fovea, here is the periphery. You also have these monocular crescents. b. The eyes mostly see the same thing, but not quite. Ex: The left eye gets blocked looking to the right because the no ...
Age-related Increase in Astrocytes in the Visual Area V2 of the Cat
... Minor adjustments in the fine focus were made when necessary in order to make the images as legible as possible. However, as only the processes distributed laterally on the soma can be identified from a cross section, the process number counted in this study is a rough estimation. But the result sho ...
... Minor adjustments in the fine focus were made when necessary in order to make the images as legible as possible. However, as only the processes distributed laterally on the soma can be identified from a cross section, the process number counted in this study is a rough estimation. But the result sho ...
Visual behaviour mediated by retinal projections directed to the
... remains unexplored. Evidence from congenitally blind humans indicates the involvement of visual cortex in non-visual tasks (refs 13, 14; see also 15, 16), but the pathways that may mediate such plasticity are unknown. We have tested whether sensory inputs can shape the perceptual modality of a corti ...
... remains unexplored. Evidence from congenitally blind humans indicates the involvement of visual cortex in non-visual tasks (refs 13, 14; see also 15, 16), but the pathways that may mediate such plasticity are unknown. We have tested whether sensory inputs can shape the perceptual modality of a corti ...
Processing of complex stimuli and natural scenes in the visual cortex
... Hubel and Wiesel [3] important insight has been obtained by using these stimuli. Models arising from such studies continue to shape the way we think about hierarchical information processing in the visual system [4]. However, recent experiments challenge this belief. For example, in a categorization ...
... Hubel and Wiesel [3] important insight has been obtained by using these stimuli. Models arising from such studies continue to shape the way we think about hierarchical information processing in the visual system [4]. However, recent experiments challenge this belief. For example, in a categorization ...
The Constructive Nature of Visual Processing
... from background (see Chapter 27). The highest level involves object recognition (see Chapter 28). Once a scene has been parsed by the brain and objects recognized, the objects can be matched with memories of shapes and their associated meanings. Vision also has an important role in guiding body move ...
... from background (see Chapter 27). The highest level involves object recognition (see Chapter 28). Once a scene has been parsed by the brain and objects recognized, the objects can be matched with memories of shapes and their associated meanings. Vision also has an important role in guiding body move ...
Toward a Unified Theory of Visual Area V4
... was a color area were likely biased toward microelectrode recordings from color modules, while those reporting clear shape selectivity were likely biased toward recordings from noncolor modules (Conway and Tsao, 2006; Tanigawa et al., 2010). How does the presence of segregated functional domains imp ...
... was a color area were likely biased toward microelectrode recordings from color modules, while those reporting clear shape selectivity were likely biased toward recordings from noncolor modules (Conway and Tsao, 2006; Tanigawa et al., 2010). How does the presence of segregated functional domains imp ...
Cross-Modal Transfer of Information between the Tactile
... modality. Nevertheless, in a review on cross-modal abilities in nonhuman primates, Ettlinger and Wilson (1990) concluded that there is no polysensory cross-modal area, no cross-modal region “in which representations formed in one sense would reside and be accessed by another sense,” but suggested in ...
... modality. Nevertheless, in a review on cross-modal abilities in nonhuman primates, Ettlinger and Wilson (1990) concluded that there is no polysensory cross-modal area, no cross-modal region “in which representations formed in one sense would reside and be accessed by another sense,” but suggested in ...
Data Visualization Optimization Computational Modeling of Perception
... neurons along a branch called an axon. Neurons make on the order of 10,000 connections, called synapses, to other neurons. Depending on the neurotransmitter used by the neuron, its signals may have either excitatory or inhibitory effects on the recipient neuron. Signals from an excitatory neuron mak ...
... neurons along a branch called an axon. Neurons make on the order of 10,000 connections, called synapses, to other neurons. Depending on the neurotransmitter used by the neuron, its signals may have either excitatory or inhibitory effects on the recipient neuron. Signals from an excitatory neuron mak ...
Frontal Eye Fields - Psychological Sciences
... The FEF has been regarded most commonly as part of the ocular motor system; the evidence for this is beyond dispute [1]. Most evidence has been obtained through invasive studies with nonhuman primates, but the human FEF has been located through brain imaging [3], transdural recording and stimulation ...
... The FEF has been regarded most commonly as part of the ocular motor system; the evidence for this is beyond dispute [1]. Most evidence has been obtained through invasive studies with nonhuman primates, but the human FEF has been located through brain imaging [3], transdural recording and stimulation ...
Implications on visual apperception: energy, duration
... neurons. However, the highest density of neurons in neocortex (number of neurons per degree of visual angle) devoted to representing the visual field is found in retinotopic V1. It means that the highest mitochondrial (energetic) activity can be achieved in mitochondrial cytochrome oxidase-rich V1 a ...
... neurons. However, the highest density of neurons in neocortex (number of neurons per degree of visual angle) devoted to representing the visual field is found in retinotopic V1. It means that the highest mitochondrial (energetic) activity can be achieved in mitochondrial cytochrome oxidase-rich V1 a ...
WHEN THE visual cortex in the occipital lobe is electrically
... aura-like visual sensations which were different from the small flashing lights associated with his epileptic seizures. We were able to elicit phosphenes by intracortical stimulations within the subject's central 2" of visual field against both this epileptiform background 'light' and the normal. vi ...
... aura-like visual sensations which were different from the small flashing lights associated with his epileptic seizures. We were able to elicit phosphenes by intracortical stimulations within the subject's central 2" of visual field against both this epileptiform background 'light' and the normal. vi ...
Document
... Extrageniculate visual system Degeneration Tracer Insular visual area Tectum Electron microscopy ...
... Extrageniculate visual system Degeneration Tracer Insular visual area Tectum Electron microscopy ...
Perception of Motion, Depth, and Form
... N vISIoN,AS IN orHERmental oPerations, we exPerrence the world as a whole. Independent attributesmotion, depth, form, and color-are coordinated into a single visual image. In the two Previous chapters we began to consider how two parallel Pathways-the magnocellular and parvocellular pathways, that e ...
... N vISIoN,AS IN orHERmental oPerations, we exPerrence the world as a whole. Independent attributesmotion, depth, form, and color-are coordinated into a single visual image. In the two Previous chapters we began to consider how two parallel Pathways-the magnocellular and parvocellular pathways, that e ...
Cortical Substrates of Perceptual Stability during Eye Movements
... cortex, and those in area MT, the prototypical motion processing area in the superior temporal sulcus (STS) of the monkey brain, typically discharged invariably in response to smooth, slow retinal image slip, irrespective of its source being object movement in the world or, alternatively, a smooth e ...
... cortex, and those in area MT, the prototypical motion processing area in the superior temporal sulcus (STS) of the monkey brain, typically discharged invariably in response to smooth, slow retinal image slip, irrespective of its source being object movement in the world or, alternatively, a smooth e ...
AIP
... "F5 is target of strong projections originating from ar-ea AIP. Injections in this parietal area showed that the anterograde and retrograde labelings in the agranular frontal cortex was almost completely confined to F5 and, therefore, the anatomical linkage between these two areas is highly selecti ...
... "F5 is target of strong projections originating from ar-ea AIP. Injections in this parietal area showed that the anterograde and retrograde labelings in the agranular frontal cortex was almost completely confined to F5 and, therefore, the anatomical linkage between these two areas is highly selecti ...
Mechanisms of Visual Attention in the Human Cortex
... The competition among multiple objects in visual cortex can be biased by both bottom-up sensory-driven mechanisms and top-down influences, such as selective attention. Functional brain imaging studies reveal that, both in the absence and in the presence of visual stimulation, biasing signals due to ...
... The competition among multiple objects in visual cortex can be biased by both bottom-up sensory-driven mechanisms and top-down influences, such as selective attention. Functional brain imaging studies reveal that, both in the absence and in the presence of visual stimulation, biasing signals due to ...
Visual signals in the dorsolateral pontine nucleus of the alert
... movements. For a unit exhibiting test spot-related responses similar to those of the cell in Fig. 1, the receptive field of the transient component, though not studied in detail, was found to be less than 5 deg in diameter, centered on the fovea, and selective for downward test spot movement. The di ...
... movements. For a unit exhibiting test spot-related responses similar to those of the cell in Fig. 1, the receptive field of the transient component, though not studied in detail, was found to be less than 5 deg in diameter, centered on the fovea, and selective for downward test spot movement. The di ...
Computational modeling of responses in human visual
... (right). Colors are shown only for voxels where the data are well fit by a population receptive field model, as explained below. The solid black lines and labels indicate the positions of ten visual ...
... (right). Colors are shown only for voxels where the data are well fit by a population receptive field model, as explained below. The solid black lines and labels indicate the positions of ten visual ...
The Receptive Fields of Inferior Temporal Cortex Neurons in Natural
... had to make up to eight saccades before its search found the target. There was no clear pattern to these saccades, and it was only when a saccade landed near the object that the monkey reached to touch the object if it was the target of the search. In the blank scene, often one saccade was sufficien ...
... had to make up to eight saccades before its search found the target. There was no clear pattern to these saccades, and it was only when a saccade landed near the object that the monkey reached to touch the object if it was the target of the search. In the blank scene, often one saccade was sufficien ...