Showing papers on "Visual perception published in 1973"
TL;DR: The kinetic-geometric model for visual vector analysis originally developed in the study of perception of motion combinations of the mechanical type was applied to biological motion patterns and the results turned out to be highly positive.
Abstract: This paper reports the first phase of a research program on visual perception of motion patterns characteristic of living organisms in locomotion. Such motion patterns in animals and men are termed here as biological motion. They are characterized by a far higher degree of complexity than the patterns of simple mechanical motions usually studied in our laboratories. In everyday perceptions, the visual information from biological motion and from the corresponding figurative contour patterns (the shape of the body) are intermingled. A method for studying information from the motion pattern per se without interference with the form aspect was devised. In short, the motion of the living body was represented by a few bright spots describing the motions of the main joints. It is found that 10–12 such elements in adequate motion combinations in proximal stimulus evoke a compelling impression of human walking, running, dancing, etc. The kinetic-geometric model for visual vector analysis originally developed in the study of perception of motion combinations of the mechanical type was applied to these biological motion patterns. The validity of this model in the present context was experimentally tested and the results turned out to be highly positive.
4,175 citations
Book•
01 Jan 1973
TL;DR: The frontal lobes and the regulation of mental activity are regulated by the three principal functional units: occipital regions, temporal regions and parietal regions, and the organization of simultaneous syntheses.
Abstract: * Editorial Foreword Functional organization and mental activity * Local brain lesions and localization of functions * The three principal functional units Local brain systems and their functional analysis * The occipital regions and the organization of visual perception * The temporal regions and organization of auditory perception * The parietal regions and the organization of simultaneous syntheses * Sensorimotor and premotor zones and the organization of movement * The frontal lobes and the regulation of mental activity Synthetic mental activities and their Cerebral Organization * Perception * Movement and action * Attention * Memory * Speech * Thinking Conclusion
1,336 citations
TL;DR: In this article, the authors found evidence for the processing of information about the locus of light stimuli presented in areas of the visual field which are "blind" by the traditional definition.
Abstract: IT is generally believed that total destruction of visual cortex and optic radiations in man should lead to blindness, and that regional (subtotal) destruction should correspondingly produce circumscribed areas of blindness (“scotomata”) in the visual field1. Such areas of blindness are defined by a patient's inability to detect and report visual stimuli projected into the affected region. Standard methods of visual field testing (perimetry) suggest that such scotomata may be “absolute”, that is the patient seems to be unable to distinguish between the presence and absence of visually presented targets whenever they are presented in the scotomatous area. Suspecting that the response of the visual system may depend on the task requirements, we used a technique which requires a localizing response from the patient2, in addition to clinical perimetry. As a result, we have found evidence for the processing of information about the locus of light stimuli presented in areas of the visual field which are “blind” by the traditional definition.
691 citations
TL;DR: The findings provide evidence that gestalt formation is intact whereas perceptual classification is impaired in patients with right posterior lesions, and it was demonstrated that there is a favoured view for efficiency of object recognition.
445 citations
334 citations
327 citations
TL;DR: Right-hemisphere specialization for facial recognition, coupled with more direct image transfer from the left visual field to the right hemisphere, is suggested as an explanation for the established finding that the right side of the human face has greater saliency.
302 citations
270 citations
TL;DR: The authors particularly stress the importance of oculo-motor imbalance deviating the axis of the gaze to the right, which is linked to age and independent of the socio-cultural level.
TL;DR: Seven applications of the ‘taking-into-account’ hypothesis are described and a model of the information-processing sequence suggested by the hypothesis is presented.
Abstract: In order to secure useful information the perceptual system must combine information present in the retinal counterpart of the to-be-discriminated distal variable with information about other varia...
TL;DR: Comparative recognition accuracies for physiognomic and verbal stimuli were compared when these stimuli were tachistoscopically presented to the left and right visual fields of normal dextral subjects, indicating a majority of the subjects demonstrated a right visual field superiority for the recognition of trigrams.
TL;DR: The present experiments show that it is possible to obtain “capture” effects over a much wider angle in the vertical median plane than in the horizontal plane, the more similar the visual stimuli are to visual stimuli originally associated with that sound source.
Abstract: Visual stimuli associated with a sound source can affect its localization in space—the basis for the “Ventriloquism” effect. The present experiments show that it is possible to obtain such effects over a much wider angle in the vertical median plane than in the horizontal plane. Such “capture” effects are also shown to be larger, the more similar the visual stimuli are to visual stimuli originally associated with that sound source. Attentional variables appear to be critical.
TL;DR: It is suggested that the laterality effects obtained in letter recognition are unrelated to those obtained with dichotic listening, and therefore are mediated by a different mechanism.
TL;DR: Microelectrode recordings were made from cells in the cat's visual cortex that responded to both acoustic and visual stimuli, and the bimodal cells occurred in anatomically distinct clusters which were separated from the purely visual cells.
TL;DR: This result suggests that presenting the alternatives right after the stimulus presentation does not control for redundancy since alternatives are eliminated during perception of the stimulus, not after the visual information has been completely analyzed.
Abstract: Previous studies have demonstrated that a letter is better identified when embedded in a valid spelling pattern than when presented alone. The present results replicated earlier findings in a paradigm that controls for redundancy by presenting the response alternatives after the stimulus presentation. However, this study failed to find an effect of visual similarity. This result suggests that presenting the alternatives right after the stimulus presentation does not control for redundancy since alternatives are eliminated during perception of the stimulus, not after the visual information has been completely analyzed. Identification was, therefore, examined in a task in which 5s were given the letter and word alternatives prior to the experimental session. This task eliminated the spelling pattern advantage and also provided evidence for visual similarity effects in letter and word identification. The findings are consonant with a visual identification process that analyzes visual features of letters in both letter and word recognition.
TL;DR: Judgments from visual cues were found to be more accurate as measured against the (audio visual) criterion than were judgments from vocal cues.
Abstract: Human communicative behavior can be viewed as functioning through three channels: the verbal, (nonverbal) vocal and visual. The present study sought to assess the relative effectiveness of the (nonverbal) vocal and visual channels in influencing observers'judgment of communicative stimuli. Observers were asked to judge various protrayals of feeling state on film, from which certain cue components had been systematically removed. Judgments from visual cues were found to be more accurate as measured against the (audio visual) criterion than were judgments from vocal cues.
IBM1
01 Sep 1973
TL;DR: Results conflict with earlier findings that have shown that a letter is better identified in a word than in a nonword or presented alone, and indicate either that redundancy may not have been adequately controlled in the earlier studies or that some other process besides a perceptual one might account for the results.
Abstract: Letter vs. word and word vs. nonword identification were compared, with redundancy adequately controlled. The processing time of the test st imulus was varied to provide a number of levels of correct performance. The first experiment showed that letters were recognized better when presented alone than when embedded in words. In the second experiment, the identification of letters in words did not differ from the identification of letters in nonwords. These results conflict with earlier findings that have shown that a letter is better identified in a word than in a nonword or presented alone. The dif fer ences in the experimental procedures indicate either that redundancy may not have been adequately controlled in the earlier studies or that some other process besides a perceptual one might account for the results.