The Artificial Perceptual System In a Perceptual Prosthesis?

2012 ◽  
Keyword(s):  
Perceptual System

The Sophistry of Guidelines: Revisiting Recipes for Color Use in Human-Computer Interface Design

1992 ◽  
Vol 36 (4) ◽  
pp. 418-422 ◽  
Author(s):  
David D. Woods ◽  
Leila Johannesen ◽  
Scott S. Potter
Keyword(s):  
Interface Design ◽  
Perceptual System ◽  
Computer Interface ◽  
Survey Study ◽  
Human Computer Interface ◽  
Alternative Approach ◽  
Common Problems ◽  
Diverse Audience

A survey study of color guidelines for user-computer interface design was undertaken and assessed against relevant knowledge about the human perceptual system. The main problem found is that some guidelines are dissociated from knowledge of how the human perceptual system works in relation to the constraints of the computer as a medium for perception. The guidelines approach, whose goal is to produce straightforward, concise recommendations for a diverse audience, may encourage this situation. Some specific problems and gaps in color guidelines are discussed. An alternative approach based on gearing guidance to the difficulties and common problems faced by designers is sketched.

scholarly journals Refractive disorders in children

2021 ◽  
Vol 70 (1) ◽  
pp. 5-9
Author(s):  
Larisa-Bianca Holhos ◽  
◽  
Mihaela Coroi ◽  
Teodora Holhos ◽  
Ioana Damian ◽  
...  
Keyword(s):  
Public Health ◽  
Motor Skills ◽  
Motor Development ◽  
Public Health Problem ◽  
Severe Form ◽  
Perceptual System ◽  
Refractive Errors ◽  
Visual Dysfunction ◽  
Sensory Motor ◽  
Complex Activities

According to current estimations, globally, there are around 150 million people with an uncorrected refractive disorder, which means 27% of the world’s population. Approximately 1.4 million of these are children and have a milder or more severe form of visual dysfunction secondary to refractive errors. Since 1990, refractive errors are considered to be a public health problem among children and cause visual dysfunction, with a prevalence of up to 43%. Vision maturation occurs in early childhood, when all the senses and motor skills work together to acquire language, first ideas about the environment and all the elements that define the person himself. Sight is a contributory perceptual system for the cognitive, social, sensory-motor development and for the assemblage of information about the environment. In the first years of life, the child increasingly discovers complex activities, requiring the ability to change the eyes fixation in space from one point to another and a normal binocular motility.

Haptic Perception of Whole and Partial Extents of Small Objects

2002 ◽  
Vol 46 (26) ◽  
pp. 2193-2196
Author(s):  
Philip Hove ◽  
Alison M. Tollner ◽  
Martina I. Klein ◽  
Michael A. Riley ◽  
Marie-Vee Santana
Keyword(s):  
Human Factors ◽  
Haptic Perception ◽  
Perceptual System ◽  
Small Scale ◽  
Partial Length ◽  
Object Properties ◽  
Touch Perception

Success at using hand-held objects in the absence of vision implies that the haptic perceptual system is capable of registering information that specifies certain properties of the objects, such as object length or orientation. Research has indicated that people are capable of non-visually perceiving a multitude of object properties. Moreover, research has revealed that those haptic perceptions seem to be constrained by an object's distribution of mass (i.e., inertial properties). However, the majority of this research has been done with large hand-held objects. We sought to test if this relation holds with very small objects. We concluded that participants were able to perceive the whole lengths of the small rods and that whole and partial length are perceptually independent. The results lend support to the hypothesis that this form of touch perception (at the small scale) is anchored in the haptic system's sensitivity to the object's resistance to being rotated (i.e., inertia). Human Factors applications of this line of research are discussed.

Direct Perception and Action Decision for Unknown Object Grasping

2019 ◽  
pp. 1372-1387
Author(s):  
Hiroyuki Masuta ◽  
Tatsuo Motoyoshi ◽  
Kei Sawai ◽  
Ken'ichi Koyanagi ◽  
Toru Oshima ◽  
...  
Keyword(s):  
Relative Position ◽  
Fuzzy Inference ◽  
Perceptual System ◽  
Moment Of Inertia ◽  
Direct Perception ◽  
Physical Parameters ◽  
Robot Arm ◽  
Depth Sensor ◽  
Unknown Object ◽  
Action Decision

This paper discusses the direct perception of an unknown object and the action decision to grasp an unknown object using depth sensor for social robots. Conventional methods estimate the accurate physical parameters when a robot wants to grasp an unknown object. Therefore, we propose a perceptual system based on an invariant concept in ecological psychology, which perceives the information relevant to the action of the robot. Firstly, we proposed the plane detection based approach for perceiving an unknown object. In this paper, we propose the sensation of grasping which is expressed by using inertia tensor, and applied with fuzzy inference using the relation between principle moment of inertia. The sensation of grasping encourages the decision for the grasping action directly without inferring from physical value such as size, posture and shape. As experimental results, we show that the sensation of grasping expresses the relative position and posture between the robot and the object, and the embodiment of the robot arm by one parameter. And, we verify the validity of the action decision from the sensation of grasping.

scholarly journals Grasping Discriminates between Object Sizes Less Not More Accurately than the Perceptual System

Vision ◽  
2019 ◽  
Vol 3 (3) ◽  
pp. 36
Author(s):  
Frederic Göhringer ◽  
Miriam Löhr-Limpens ◽  
Constanze Hesse ◽  
Thomas Schenk
Keyword(s):  
Continuous Variable ◽  
Perceptual System ◽  
Perceptual Task ◽  
Size Discrimination ◽  
Size Information ◽  
Visuomotor Task ◽  
System A ◽  
Dichotomous Variable ◽  
Visual Size ◽  
Maximum Grip

Ganel, Freud, Chajut, and Algom (2012) demonstrated that maximum grip apertures (MGAs) differ significantly when grasping perceptually identical objects. From this finding they concluded that the visual size information used by the motor system is more accurate than the visual size information available to the perceptual system. A direct comparison between the accuracy in the perception and the action system is, however, problematic, given that accuracy in the perceptual task is measured using a dichotomous variable, while accuracy in the visuomotor task is determined using a continuous variable. We addressed this problem by dichotomizing the visuomotor measures. Using this approach, our results show that size discrimination in grasping is in fact inferior to perceptual discrimination therefore contradicting the original suggestion put forward by Ganel and colleagues.

scholarly journals Linking Variation in Perception and Production in Sound Change: Evidence from Dutch Obstruent Devoicing

2019 ◽  
Vol 63 (3) ◽  
pp. 660-685
Author(s):  
Anne-France Pinget ◽  
René Kager ◽  
Hans Van de Velde
Keyword(s):  
Stages Of Change ◽  
Regional Variation ◽  
Sound Change ◽  
Perceptual System ◽  
Additional Insight ◽  
Individual Level ◽  
Production Study ◽  
Clear Link ◽  
The Individual

This study investigates the link between the perception and production in sound change in progress, both at the regional and the individual level. Two devoicing processes showing regional variation in Dutch are studied: the devoicing of initial labiodental fricatives and of initial bilabial stops. Five regions were selected, to represent different stages of change in progress. For each region, 20 participants took part in production (Study 1) and perception (Study 2) experiments. First, the results of the production tasks give additional insight in the regional and individual patterns of sound change. Second, the regional perceptual patterns in fricatives match the differences in production: perception is the most categorical in regions where the devoicing process is starting, and the least categorical in regions where the process of devoicing is almost completed. Finally, a clear link is observed between the production and perception systems undergoing sound change at the individual level. Changes in the perceptual system seem to precede changes in production. However, at the sound change completion, perception lags behind: individuals still perceive a contrast they no longer produce.

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