Spatial orientation of a limb using egocentric reference points
نویسندگان
چکیده
منابع مشابه
Missing the egocentric spatial reference: a blank on the map
Egocentric (self-centered) and allocentric (viewpoint independent) representations of space are essential for spatial navigation and wayfinding. Deficits in spatial memory come with age-related cognitive decline, are marked in mild cognitive impairment (MCI) and Alzheimer's disease (AD), and are associated with cognitive deficits in autism. In most of these disorders, a change in the brain area...
متن کاملRoughness in modules by using the notion of reference points
module over a ring is a general mathematical concept for many examples of mathematicalobjects that can be added to each other and multiplied by scalar numbers.In this paper, we consider a module over a ring as a universe and by using the notion of reference points, we provide local approximations for subsets of the universe.
متن کاملIsotropic visual field effect on spatial orientation and egocentric localization.
The aim of this paper is to demonstrate the presence of a similar visual field effect on both spatial orientation and egocentric localization. A first experiment explored an orientation task (Visually Perceived Vertical or VPV determination) and compared the effects of a frame inclined either in the midfrontal plane (in this condition subjects assessed roll VPV) or in the median plane (subjects...
متن کاملQualitative Directions in Egocentric and Allocentric Spatial Reference Frames
In this paper, we have presented a formalism for representation of and reasoning about directions in a qualitative way in two spatial reference frames, namely, an egocentric reference frame and an allocentric reference frame. Qualitative direction has been separated from dimensionality of spatial objects and as such, the formalism may be used to represent qualitative direction in a dimension-in...
متن کاملReasoning about directions in an egocentric spatial reference frame
Within qualitative spatial reasoning, spatial objects having directions have been abstracted in different ways; directed line segments, oriented points etc. have been used. In certain applications, it becomes necessary to reason about directions of objects without focusing on the dimensionality of these objects. We present a framework for representation of and reasoning about directions in a qu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Perception & Psychophysics
سال: 1982
ISSN: 0031-5117,1532-5962
DOI: 10.3758/bf03204864