2 edition of Mechanisms of spatial perception and orientation as related to gravity found in the catalog.
Mechanisms of spatial perception and orientation as related to gravity
1975 by G. Fischer .
Written in English
|The Physical Object|
|Number of Pages||296|
Thus, our results are clearly related to the visual proximity principle in perceptual organization. As with the visual proximity principle, using spatial proximity as a cue for inter-sensory combination should aid everyday object perception by maximizing the probability that signals from the same rather than different objects are combined. Applications that focus on the underlying neurobiological mechanisms of sensation, perception, attention, and cognitive function, particularly in animal models, may be more appropriately reviewed by different study sections in the IFCN IRG. For example, applications focused on the auditory system are likely to be reviewed by AUD, visual. Effects of spatial cuing on luminance detectability: Psychophysical and electrophysiological evidence for early selection. Journal of Experimental Psychology: Human Perception and Performance, 20, Luck, S. J., & Hillyard, S. A. (b). Spatial filtering during visual search: Evidence from human electrophysiology. As we go about our everyday activities, our brain computes accurate estimates of both our motion relative to the world, and of our orientation relative to gravity. Essential to this computation is the information provided by the vestibular system; it detects the rotational velocity and linear acceleration of our heads relative to space, making a fundamental contribution to our perception of.
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Get this from a library. Mechanisms of spatial perception and orientation as related to gravity: International Symposium on Spatial Orientation, Köln, September 18thth, [Hermann Schöne;]. Spatial Orientation and Motion Perception in Microgravity The purpose of this chapter is to describe many of the unique spatial orientation and perceptual disturbances associated with space.
C.L. Colby, in International Encyclopedia of the Social & Behavioral Sciences, Basic Processes. Spatial perception involves not one but many specific abilities.
Within the visual domain these include locating points in space, determining the orientation of lines and objects, assessing location in depth, appreciating geometric relations between objects, and processing motion. Spatial orientation is a term describing humans’ understanding about where they are positioned and oriented relative to objects in their environment (Rieser, ) and is critical for everyday spatial goals of navigating and acting in one’s environment.
such as up/down with respect to gravity, magnetic compass directions, and landmarks Author: William Thompson, Roland Fleming, Sarah Creem-Regehr, Jeanine Kelly Stefanucci.
American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA In order to discuss potential mechanisms of perception, gravity will first be considered from a physical perspective and related to a plant's suscep tion of gravity. Second, the types of signals which may be involved in transmission will be reviewed.
In the main section, the means by which the. Spatial orientation refers to the ability to identify the position or direction of objects or points in space (Benton & Tranel, ).It can be assessed by asking patients to perform spatial transformations such as rotations or inversions of stimuli.
Different paper-and-pencil tasks exist which require patients to indicate whether a rotated figure matches the stimulus figure or to mark a test. Spatial cognition is discussed from two closely related perspectives: the internal mapping of Mechanisms of spatial perception and orientation as related to gravity book stimuli (e.g., landmarks and sensory perception of environmental information) and the internal mapping of internally perceived stimuli (e.g., kinesthetic and.
The perception of force, effort or heaviness relies on some of the same sensory and central mechanisms as proprioception and kinesthesia. On earth, posture and locomotion are always carried out against the omnipresent force of gravity that accelerates objects downwards toward the earth's surface.
We asked whether this deficit is, in part, caused by a deficient perception of body position relative to gravity, and therefore measured the subjective visual vertical (SVV) in patients with. The book methodically introduces the reader to chemoreception, tasting and smelling, cutaneous mechanoreception (of position, velocity, transients), active texture perception, mechanisms of spatial orientation and of motion in space, thermoreception, vision, and audition.
Theories on human “gravireceptor” and “idiotropic” biases, visual “frame” and “polarity” cues, top-down processing effects on object orientation perception, mental rotation and “direction vertigo” are discussed and related to animal experiments on limbic head direction and place cell responses.
VRIs reflects the terrestrial heritage of human orientation, re-orientation and navigation mechanisms. Nonetheless, the crew reports and research reviewed here suggests ways to further reduce spatial orientation and navigation problems through improved spacecraft design and virtual reality based crew training.
Visual Reorientation Illusions. S.C. Levinson, in International Encyclopedia of the Social & Behavioral Sciences, Spatial cognition is central to human thinking, and spatial language is thus an important area of study, as it may reveal fundamental properties of human thought.
Recent research reveals that spatial language is much more divergent across languages than had been thought, suggesting significant cultural. Such visual–vestibular interactions are vital for maintaining a coherent perception of spatial orientation during static or dynamic changes in positions of the head and body.
In this chapter, we will discuss the basic principles of visual–vestibular interaction within the frameworks of heading (e.g., walking or running) and head tilt with. gravity and to comparable mechanical field forces. In vertebrates this means particularly the statolith organs of the labyrinth.
The participation of these organs in the spatial orientation of normal human beings has been well established. 4, e~, e2,86 We need only recall. Altered gravity environments, such as those experienced by astronauts, impact spatial orientation perception, and can lead to spatial disorientation and sensorimotor impairment.
To more fully understand and quantify the impact of altered gravity on orientation perception, several mathematical models have been proposed. The utricular shear, tangent, and the idiotropic vector models aim to.
This review examines the isotropy of the perception of spatial orientations in the haptic system. It shows the existence of an oblique effect (i.e., a better perception of vertical and horizontal orientations than oblique orientations) in a spatial plane intrinsic to the haptic system, determined by the gravitational cues and the cognitive resources and defined in a subjective frame of reference.
Overall, this study demonstrates that a massive somatosensory deficit substantially impairs the perception of spatial orientation, and that the use of the remaining sensory inputs available to a. Lackner JR, DiZio P. Human orientation and movement control in weightlessness and artificial gravity Brain Res.
DiZio P, Lackner JR. Motion sickness side effects and aftereffects of immersive virtual environments created with helmet-mounted visual displays. In addition, they present valuable model systems for studying the mechanisms of gravity perception – a topic of increasing interest in these days of experimentation in space.
This book reveals how single cells achieve the same sensoric capacity as multicellular organisms, such as plants or animals.
The purpose of this doctoral dissertation was to study the contribution of the perception of body orientation to the judgment of gravity direction when the body is roll tilted (Aubert-Müller. looking at the map.
It results from the fact that spatial perception is 'orientation-dependent'; objects and pictures have a top and a bottom in the perceptual field. In the case of road or trail maps, many people turn the map to bring about alignment.
Unfortunately, this option is not available with ubiquitous 'You-Are. Patterns of preparatory movement organize your orientation to gravity, and set the tone for all other, more complex actions. This week we will explore the individual strategies each of us employs to establish our highly refined and subtle rapport with gravity.
3: Perception: Perception is the basic language of physical intelligence. The control and perception of body orientation and motion are subserved by multiple sensory and motor mechanisms ranging from relatively simple, peripheral mechanisms to complex ones involving the highest levels of cognitive function and sensory-motor integration.
Vestibular contributions to body orientation and to spatial localization of auditory and visual stimuli have long been recognized. In book: Attention and Performance XIX: Common mechanisms in perception and action (pp) Publisher: Oxford University Press; Editors: Wolfgang Prinz, Bernhard Hommel.
In weightlessness, astronauts must rely much more on vision to maintain their spatial orientation, because the otolith organs can no longer signal the “down” direction. During prolonged exposure, however, reliance seems to shift toward an intrinsic, body vertical reference.
The erroneous illusions of self-motion during head movements performed during and after return to Earth gravity are. Perception of spatial location and body positions results from the brain's ability to integrate visual, auditory, and vestibular inputs (from gravity and motion detecting organs in the inner ear) as well as proprioceptive input (motion, pressure and temperature sensors in the tendons, muscles, joints and skin).
Without relevant visual cues, the subjective visual vertical (SVV) is biased in roll-tilted subjects toward the body axis (Aubert or A-effect).
This study focused on the role of the somatosensory system with respect to the SVV and on whether somesthetic cues act through the estimated body tilt.
The body cast technology was used to obtain a diffuse tactile stimulation. Eye–hand coordination (also known as hand–eye coordination) is the coordinated control of eye movement with hand movement and the processing of visual input to guide reaching and grasping along with the use of proprioception of the hands to guide the eyes.
Eye–hand coordination has been studied in activities as diverse as the movement of solid objects such as wooden blocks, archery. InBeritashvili first summarized his theory in the book Basic Forms of Neural and Psychoneural Activity, and then extended it in his next monograph Neural Mechanisms of Higher Vertebrate Behavior (, translated into English in ).
Meanwhile, he had studied problems of spatial orientation in mammals in a special book published in about whether vision or our sensing the direction of gravity was more significant in our perception of spatial orientation.
InGibson and Mowrer published an article that took the strong position that sensing the direction of gravity was more significant. However, in agreement with Wertheimer’s earlier.
Profile. We investigate basic biomechanical, physiological and psychological mechanisms of human motor control and spatial orientation. Practical applications of interest include development of motor control and posture across the lifespan, assessment and rehabilitation of movement disorders, disorders of movement in autism, prevention of falls in aging, vestibular loss and other clinical.
Spatial orientation. Spatial orientation (the inverse being spatial disorientation, aka spatial-D) is the ability to maintain body orientation and posture in relation to the surrounding environment (physical space) at rest and during motion. Humans have evolved to maintain spatial orientation on the ground.
It is generally assumed the vestibular system provides a veridical representation of head motion to higher order centers for the perception of self-motion and spatial orientation.
However, as reviewed above, the findings of recent electrophysiological studies in. memorize picture, and create an image of it, it took longer for participants to mentally move long distances than shorter disntances --> like perception, imagery is spatial; when asked to imagine an island with 7 locations, there was a relationship between reaction time and distance imagined.
Abstract. The haptic perception of vertical, horizontal, +45° oblique, and +° oblique orientations was studied in completely blind adults. The purpose was to determine whether the variations of the gravitational cues provided by the arm-hand system during scanning would affect the manifestation of the oblique effect (lower performance in oblique orientations than in vertical-horizontal.
The authors argue that changes in the perception of vertical and horizontal caused by local visual cues can account for many classical visual illusions. Because the perception of orientation is influenced more by visual cues than gravity-based cues when the observer is tilted (e.g., S. Asch & H.
Witkin, ). Gravity is crucial for spatial perception, postural equilibrium, and movement generation. The vestibular apparatus is the main sensory system involved in monitoring gravity.
Hair cells in the vestibular maculae respond to gravitoinertial forces, but they cannot distinguish between linear accelerations and changes of head orientation relative to gravity.
Off-vertical axis rotation in darkness induces a perception of body motion which lasts as long as rotation continues. Perceived body motion is the combination of two simultaneous displacements. The most easily perceived is a translation without rotation along a conical path, at the frequency of the actual rotation.
Meanwhile, the subjects feel as if they were always facing towards the same. An internal model of gravity and its role in action, perception, and spatial orientation Within this broad field, she specializes in the neural mechanisms of spatial perception and navigation using rodents, humans and non-human primates as a model.
She is interested in neural coding and how complex, cognitive behavior is produced by. Merfeld DM, Zupan L, Peterka RJ (). Humans use an internal model to estimate gravity and linear acceleration. Nature Merfeld, DM, S.
Park, C. Gianna-Poulin, FO Black, S. Woods, () Vestibular perception and action employ qualitatively different mechanisms: II.Studies manipulating spatial frequencies have also been taken as evidence for a locally oriented analysis of faces in ASD. Several of these studies reported a bias towards high spatial frequencies, which are thought to convey local rather than global informat Importantly, this perceptual account of face perception deficit in ASD does.