Results 121 to 130 of about 2,994 (143)
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Spatial egocentrism and the effect of an alternate frame of reference
Journal of Experimental Child Psychology, 1980Abstract The present study contrasted two possible explanations of spatial egocentrism in spatial perspective tasks. By one account children's judgments in perspectivetaking tasks are based on relations between the self (ego) and the target array.
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Qualitative Motion Representation in Egocentric and Allocentric Frames of Reference
1999In qualitative motion representation, frames of reference play an important role as well in measuring of the motion data as in representation and application of algorithms. This paper discusses motion representation in egocentric and allocentric frames of reference and begins with some general considerations on motion representation through qualitative
Alexandra Musto +4 more
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Disentangling Gravitational, Environmental, and Egocentric Reference Frames in Spatial Neglect
Journal of Cognitive Neuroscience, 1998Previous studies in neglect patients using rotation of the body around the roll-axis revealed neglect of visual stimuli not only in the egocentric, body-centered left but also in the environmental left. The latter has been taken as evidence for a gravity-based environment-centered component of neglect occurring independently of the subject's actual ...
H O, Karnath, M, Fetter, M, Niemeier
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A fronto-parietal system for computing the egocentric spatial frame of reference in humans
Experimental Brain Research, 1999Spatial orientation is based on coordinates referring to the subject's body. A fundamental principle is the mid-sagittal plane, which divides the body and space into the left and right sides. Its neural bases were investigated by functional magnetic resonance imaging (fMRI).
Giuseppe Vallar +5 more
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Interaction between allocentric and egocentric reference frames in deaf and hearing populations
Neuropsychologia, 2014Spatial position of an object can be represented in the human brain based on two types of reference frames: allocentric and egocentric. The perception/action hypothesis of the ventral/dorsal visual stream proposed that allocentric reference frame codes object positions relative to another object/background subserving conscious perception of the ...
Ming, Zhang +5 more
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Egocentric Action in Early Infancy: Spatial Frames of Reference for Saccades
Psychological Science, 1997The extent to which infants combine visual (i e, retinal position) and nonvisual (eye or head position) spatial information in planning saccades relates to the issue of what spatial frame or frames of reference influence early visually guided action We explored this question by testing infants from 4 to 6 months of age on the double-step saccade ...
Rick O. Gilmore, Mark H. Johnson
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The Role of Spatial Immersion for Tasks Based on the Use of Egocentric Frames of Reference
2013The focus of the current study was to understand which aspects of 3D immersive virtual reality are particularly useful for tasks based on the use of egocentric frames of reference. Twenty-two undergraduate students learned relative motion concepts in an interactive virtual reality simulation, either in an immersive virtual environment (IVE) or non ...
Michael Kozhevnikov +2 more
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Cognition, 2006
We studied the development of spatial frames of reference in children aged 3-6 years, who retrieved hidden toys from an array of identical containers bordered by landmarks under four conditions. By moving the child and/or the array between presentation and test, we varied the consistency of the hidden toy with (i) the body, and (ii) the testing room ...
Marko, Nardini +3 more
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We studied the development of spatial frames of reference in children aged 3-6 years, who retrieved hidden toys from an array of identical containers bordered by landmarks under four conditions. By moving the child and/or the array between presentation and test, we varied the consistency of the hidden toy with (i) the body, and (ii) the testing room ...
Marko, Nardini +3 more
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The EEG Correlates of the Allocentric and the Egocentric Spatial Reference Frames Processing
2009In the paper we describe current results of our ongoing research, concerning the navigation in the virtual tunnel task and its EEG correlates. We searched for the features in the EEG signal to discriminate the employment of the allocentric and the egocentric reference frames.
Michal Vavrečka, Lenka Lhotská
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Spatial memory: the role of egocentric and allocentric frames of reference
2011A fundamental requirement of everyday life is that of encoding and remembering successfully the locations of objects, landmarks or buildings in space. This function is achieved by structuring spatial information in systems of coordinates. There are many ways to classify spatial reference systems (Paillard, 1991), but a useful one, for the purposes of ...
Gennaro Ruggiero +3 more
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