Simulators and Realism

1983 ◽  
Vol 35 (1) ◽  
pp. 3-15 ◽  
Author(s):  
T. C. D. Whiteside
Keyword(s):  
Motion Sickness ◽  
Experimental Approach ◽  
Motion Cues ◽  
Moving Base ◽  
Ocular Convergence

The objectives of simulation are discussed on the basis of training in procedures or neuromuscular skills, and in relation to the amount of realism required. Motion sickness arising from inadequate co-ordination of visual and motion cues, is considered in relation to fixed and moving base simulators. In the perception of distance and size, the role of ocular convergence is discussed and an experimental approach suggested. The mentally stressful effects of increased responsibility, as robots enable the operator to extend his output, are discussed in relation to its covert symptomatology and to advanced flight concepts.

A study of moving base simulation motion cues utilizing washout technique

1975 ◽  
Author(s):  
Mark Kirkpatrick ◽  
Nicholas Shields ◽  
Ronald Brye ◽  
Frank L. Vinz
Keyword(s):  
Motion Cues ◽  
Moving Base

An experimental approach to communal coping

2021 ◽  
pp. 026540752199246
Author(s):  
Melissa Zajdel ◽  
Vicki S. Helgeson
Keyword(s):  
Health Outcomes ◽  
Positive Relationship ◽  
Experimental Approach ◽  
Positive Mood ◽  
Self Report ◽  
Communal Coping ◽  
Observational Measures ◽  
Relationship Outcomes ◽  
The Individual

Communal coping has been linked to better psychological and physical health across a variety of stressful contexts. However, there has been no experimental work causally linking communal coping to relationship and health outcomes. In addition, research has emphasized the collaboration over the shared appraisal component of communal coping. The present study sought to isolate the role of appraisal by manipulating whether dyads viewed a stressor as shared or individual. Friend dyads (n = 64 dyads; 128 participants) were randomly assigned to view a stressor as either a shared or an individual problem, but both groups were allowed to work together. Across self-report and observational measures dyads reported more collaboration and support, better relationship outcomes, and more positive mood after the stressor in the shared than the individual appraisal group. This is the first laboratory evidence to establish causal links of communal coping—specifically shared appraisal—to positive relationship and health outcomes.

Apparent Depth with Retinal Image Motion of Expansion and Contraction Yoked to Head Movement

Perception ◽  
1998 ◽  
Vol 27 (8) ◽  
pp. 937-949 ◽  
Author(s):  
Takanao Yajima ◽  
Hiroyasu Ujike ◽  
Keiji Uchikawa
Keyword(s):  
Motion Parallax ◽  
Ccd Camera ◽  
Head Movements ◽  
Image Motion ◽  
Apparent Depth ◽  
Motion Cues ◽  
Relative Expansion ◽  
Retinal Image Motion ◽  
Self Motion

The two main questions addressed in this study were (a) what effect does yoking the relative expansion and contraction (EC) of retinal images to forward and backward head movements have on the resultant magnitude and stability of perceived depth, and (b) how does this relative EC image motion interact with the depth cues of motion parallax? Relative EC image motion was produced by moving a small CCD camera toward and away from the stimulus, two random-dot surfaces separated in depth, in synchrony with the observers' forward and backward head movements. Observers viewed the stimuli monocularly, on a helmet-mounted display, while moving their heads at various velocities, including zero velocity. The results showed that (a) the magnitude of perceived depth was smaller with smaller head velocities (<10 cm s−1), including the zero-head-velocity condition, than with a larger velocity (10 cm s−1), and (b) perceived depth, when motion parallax and the EC image motion cues were simultaneously presented, is equal to the greater of the two possible perceived depths produced from either of these two cues alone. The results suggested the role of nonvisual information of self-motion on perceiving depth.

A re-investigation of the role of utricular asymmetries in Space Motion Sickness

2011 ◽  
Vol 21 (3) ◽  
pp. 141-151 ◽  
Author(s):  
S.A.E. Nooij ◽  
R. Vanspauwen ◽  
J.E. Bos ◽  
F.L. Wuyts
Keyword(s):  
Motion Sickness ◽  
Space Motion Sickness ◽  
Space Motion

Function words and polarity

2021 ◽  
pp. 66-85
Author(s):  
Matteo Greco
Keyword(s):  
Experimental Approach ◽  
The Other ◽  
Function Words ◽  
Closed Class ◽  
Other Hand ◽  
Truth Value ◽  
The One ◽  
Syntactic Derivation

Function words are commonly considered to be a small and closed class of words in which each element is associated with a specific and fixed logical meaning. Unfortunately, this is not always true as witnessed by negation: on the one hand, negation does reverse the truth-value conditions of a proposition, and the other hand, it does not, realizing what is called Expletive Negation. This chapter aims to investigate whether a word that is established on the basis of its function can be ambiguous by discussing the role of the syntactic derivation in some instances of so-called Expletive Negation clauses, a case in which negation seems to lose its capacity to deny the proposition associated with its sentence. Both a theoretical and an experimental approach has been adopted.

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