Showing papers on "Visual perception published in 1969"
344 citations
TL;DR: For instance, the authors found that right-handed and non-familial left-handed subjects showed a right-side superiority on all tasks, while the familial left-handers tended to identify material presented to the left side more accurately.
256 citations
225 citations
TL;DR: The primary concern is to show that the cognitive defect is a perceptual one and that all the salient features of the recognition disturbance can be accounted for by a profound defect in visual shape form perception.
Abstract: FOR almost a century, visual agnosia, conventionally defined as seeing without recognition, has been demonstrated and investigated. Bona fide clinical cases are rare and most theoretical explanations of the mechanisms underlying visual agnosia have been tailored to the findings of an individual patient. The following case was studied in the Aphasia Research Unit of the Boston Veterans Administration Hospital. During this time the visual disturbance was investigated in the laboratory of R. Efron who has reported his findings in detail. 1 (His data support the view that this patient has a unique defect in visual shape [form] perception. His paper deals with this patient's problem in terms of the philosophical, definitional, and methodological implications of the disorder. The primary concern is to show that the cognitive defect is a perceptual one and that all the salient features of the recognition disturbance can be accounted for by a profound defect in
222 citations
TL;DR: The right temporal lobe plays a special part in visual perception and spatial orientation as mentioned in this paper, and the question of regional specialization of function within the hemispheres, recently reviewed by Piercy (1964), has been illustrated by reports of highly selective intellectual deficit in patients with focal brain lesions (Milner, 1963, 1967).
Abstract: Recent clinical and experimental studies of patients with unilateral lesions have been more concerned with problems of hemispheric asymmetry than with the somewhat limited notion of cerebral dominance. There are now firm data to support the observation of earlier clinicians (Hughlings Jackson, 1887; Potzl, 1928; Lange, 1936; Dide, 1938) that the right hemisphere plays a special part in visual perception and spatial orientation (McFie, Piercy, and Zangwill, 1950; Anderson, 1951; Hecaen, Ajuriaguerra, and Massonnet, 1951; McFie and Piercy, 1952; Milner, 1952; Ettlinger, Warrington, and Zangwill, 1957; Milner, 1958; Costa and Vaughan, 1962; Hecaen, 1962; Teuber, 1962). Moreover, the question of regional specialization of function within the hemispheres, recently reviewed by Piercy (1964), has been illustrated by reports of highly selective intellectual deficit in patients with focal brain lesions (Milner, 1963, 1967). Studies of temporal-lobe epilepsy have shown an association between right temporal-lobe lesions and pattern-recognition deficits (Milner, 1958; Kimura, 1963; Meier and French, 1965); and work
194 citations
175 citations
TL;DR: It is argued that these experiments measure only the contribution of retinal mechanisms, and further experiments provide some evidence of central influences.
173 citations
Book•
01 Jan 1969
TL;DR: This ebooks is under topic such as information processing and memory: theory and applications art, perception and information processing: an perception through anticipation a behaviour-based perception through anticipating a behaviour the complexity of information-processing tasks in vision cognitive science: emerging perspectives and approaches.
Abstract: The best ebooks about Information Processing Approaches To Visual Perception that you can get for free here by download this Information Processing Approaches To Visual Perception and save to your desktop. This ebooks is under topic such as information processing and memory: theory and applications art, perception and information processing: an perception through anticipation a behaviour-based perception through anticipation a behaviour-based information processing models: microscopes of the mind 7 perception and cognitive aspects visual analytics two visual systems and two theories of perception: an 3 perception sage pub teaching implications of information processing theory and chapter 8 information processing theory huntsville, tx a survey of perceptual image processing methods human visual and color information processing investigated perception as information-processing springer visual perception university of leicester chapter3 – perception approaches to perception guidelines for identifying visual perceptual problems in time and mind ii information processing perspectives ebook visual perception of objects: an approach to assessment neural processing of visual information under interocular human color and visual information processing investigated capacity limits of information processing in the brain theoretical approaches to vision ՕՑգ chapter 7 outline i studying cognitive development: six a developmental approach: a framework for the development the complexity of information-processing tasks in vision cognitive science: emerging perspectives and approaches unià ̄¥ed visual perception model for context-aware wearable ar preperceptual images, processing time, and perceptual perception and action washington university in st louis a vestibular sensation: probabilistic approaches to bottom-up and top-down processing in visual perception i can a long term perceptual hypothesis affect visual a century of gestalt psychology in visual perception: ii perception and visual cognition university of glasgow modelling perception using image processing algorithms bcs
164 citations
161 citations
TL;DR: The theory is particularized in a computer program to simulate the eye movements of subjects choosing a move in chess, and its consistency is shown with data on memory of chess positions and with existing knowledge of short-term memory parameters.
Abstract: A theory is proposed to explain, in information-processing terms, some common phenomena in the initial perceptual phases of problem solving, to show that some existing computer programs for heuristic search and learning already contain basic processes that will produce these phenomena, and to show how simple organizations of the processes enable the programs to parallel human behavior. The theory is particularized in a computer program to simulate the eye movements, during the first 5 seconds, of subjects choosing a move in chess. The application of the theory is illustrated by an example, and its consistency is shown with data on memory of chess positions and with existing knowledge of short-term memory parameters.
158 citations
TL;DR: In this paper, the authors summarized their own findings about perceptual dysfunctions in urban disadvantaged children and youth and then discussed the tentative answers they, as reading specialists, have made to these questions.
Abstract: Over a decade ago, Pasamanick and Knobloch (1958) demonstrated that disadvantaged populations manifest severe visual perceptual deficits. What they called \"organic factors\" is simply an etiological term that is less defensible than the report of the perceptual deficits they found in the populations studied. As far back as Passow's first book on education in urban ghettoes, Deutsch refers to the perceptual deficits in both visual and auditory channels that he found in New York City's black and Puerto Rican children (M. Deutsch, 1963). Since then, the literature makes the point clearly enough: As a group, disadvantaged, urban low socio-economic status (SES) children manifest a disproportionately high incidence of visual perception dysfunctions. Our own more recent studies reinforce these earlier findings. Until recently, the severity and quantity of the visual perception problems have appeared to us to be so formidable that we wondered why any of these disadvantaged children could learn to read and write, which more than a few seem to be able to do. More recently, however, our wonder has ceased. As a result of asking two questions of our own research, we have lately begun to wonder why we ever wondered about it in the first place. The two questions we asked were: 1. What behaviors are we really tapping in these tests of visual perception? 2. Given the high incidence of visual perception dysfunctions, what are the practical implications for reading instruction? In other words, so what? This paper summarizes our own findings about perceptual dysfunctions in urban disadvantaged children and youth and then discusses the tentative answers we, as reading specialists, have made to these questions.
TL;DR: The present paper will contribute to the understanding of a type of neglect which was originally observed during matching-to-sample tasks with visual choices, which did not only did some patients neglect the choices on the side opposite their lesions, but these patients did not show their neglect on all tests.
Abstract: Some patients with brain lesions do not respond normally to stimuli from the side opposite their lesions, and behave as though the stimuli were not present. This phenomenon is called neglect or inattention. A number of manifestations of neglect occur: neglect on double simultaneous stimulation (visual, auditory, tactile), neglect during reading, drawing, picture description, and the complex phenomena of neglect of the opposite side of space and neglect of the opposite half of the body. Each of these types of neglect involves particular neurological functions and differs in some way from the others. The present paper will contribute to the understanding of a type of neglect which was originally observed during matching-to-sample tasks with visual choices. Not only did some patients neglect the choices on the side opposite their lesions, but these patients did not show their neglect on all tests. The neglect appeared when the patient, for some other reason-for example, aphasia-could not do the test correctly. The study also brings some evidence to the problems of whether neglect can occur in the absence of a 'primary' sensory defect and whether neglect occurs after lesions of either hemisphere or only or mainly after lesions of the minor hemisphere.
TL;DR: Human perceptual and response biases in choice reaction time tasks involving visual and auditory stimuli suggest that decisions about which stimuli to focus on and how to respond to may be influenced by these biases.
Abstract: Human perceptual and response biases in choice reaction time tasks involving visual and auditory stimuli
TL;DR: This article investigated the relationship between specific auditory and visual functions and reading performance, and found that poor readers were lacking primarily in auditory functions rather than visual ones, while good readers were better at visual functions.
Abstract: This study investigates the relationship between specific auditory and visual functions and reading performance. Pairs of second graders matched as good and poor readers on the basis of MA, IQ, and CA were tested with several subtests from the revised ITPA and the Monroe Visualization Test. The findings seem to suggest that poor readers were lacking primarily in auditory functions rather than visual.
TL;DR: It was concluded that auditory and visual perceptual skills appear more related to the acquisition of early reading skills than to their subsequent elaboration.
Abstract: To determine the nature and magnitude of the relationships between selected auditory and visual perceptual abilities and reading performance of 105 disadvantaged boys analyses assessed (a) the magn...
01 Apr 1969
TL;DR: Human vestibular system and its connection with oculomotor system and their relation to motion perception, spatial disorientation, and illusions is studied.
Abstract: Human vestibular system and its connection with oculomotor system and their relation to motion perception, spatial disorientation, and illusions
TL;DR: The experiments to be presented in this report measured vision during the tracking of a horizontally moving object and indicate that visual suppression is associated specifically with saccades and not with smooth following movements.