scholarly journals Visual orientation uncertainty in the rod-and-frame illusion

2019 ◽  
Vol 19 (4) ◽  
pp. 19
Author(s):  
Antonella Pomante ◽  
Luc P. J. Selen ◽  
W. Pieter Medendorp
Keyword(s):  
Visual Orientation ◽  
Rod And Frame

The influence of visual orientation on apparent bodily rotation following actual rotation. (Proj. Rep. No. NM 001 063.01.23).

1952 ◽  
Author(s):  
F. E. Guedry ◽  
J. T. Ray ◽  
J. I. Niven
Keyword(s):  
Visual Orientation

ANALYSIS OF REGULATIONS REGARDING THE SETTLEMENT OF ISSUES ON THE REMOVAL AND RECOVERY OF PLANTATIONS IN THE RIGHT-OF-WAY OF PUBLIC ROADS

2020 ◽  
pp. 55-60
Author(s):  
Nataliia Kharytonova ◽  
Olha Mykolaienko ◽  
Tetyana Lozova
Keyword(s):  
Traffic Safety ◽  
Climatic Factors ◽  
Visual Orientation ◽  
Right Of Way ◽  
Adverse Weather ◽  
Overhead Power Lines ◽  
The Right ◽  
Neck Diameter ◽  
Proper Operation

Greening of roads contributes to the protection of roads and their elements from influence of adverse weather and climatic factors; it includes the measures for improvement and landscaping of roads, ensures the protection of roadside areas from transport pollution, provides visual orientation of drivers. The solution of these issues will ensure creation and maintenance of safe and comfortable conditions for travelers. Green plantings in the right-of-way road area include woody, bushy, flower and grass vegetation of natural and artificial origin. For proper operation of public roads and satisfaction of other needs of the industry, there may be the need in removing the greenery. The reason for the removal of greenery in the right-of-way road area may be due to the following factors: construction of the architectural object, widening of the motor road, repair works in the security zone of overhead power lines, water supply, drainage, heating, telecommunications facilities, cutting of hazardous, dry and fautal trees, as well as self-grown and brushwood trees with a root neck diameter not exceeding 5 cm, elimination of the consequences of natural disasters and emergencies. The removal of plantations in the right-of-way area is executed in order to ensure traffic safety conditions and to improve the quality of plantations composition and their protective properties. Nowadays, in Ukraine there is no clear procedure for issuing permits for removing of such plantations. In order to resolve this issue, there is a need in determining the list of regulations in the area of forest resources of Ukraine and, if needed, the list of regulatory acts that have to be improved; to prepare a draft of the regulatory legal act that would establish the procedure of plantations cutting, the methodology of their condition determination, recovery costs determination, the features of cutting. Keywords: plantations, cutting, right-of-way, woodcutting permit, order.

The effects of contrast on visual orientation and spatial frequency discrimination: a comparison of single cells and behavior

1987 ◽  
Vol 57 (3) ◽  
pp. 773-786 ◽  
Author(s):  
B. C. Skottun ◽  
A. Bradley ◽  
G. Sclar ◽  
I. Ohzawa ◽  
R. D. Freeman
Keyword(s):  
Spatial Frequency ◽  
Striate Cortex ◽  
Frequency Tuning ◽  
Single Cells ◽  
Frequency Discrimination ◽  
Frequency Selectivity ◽  
Response Amplitude ◽  
Visual Orientation ◽  
Characteristic Analysis ◽  
Response Variance

We have compared the effects of contrast on human psychophysical orientation and spatial frequency discrimination thresholds and on the responses of individual neurons in the cat's striate cortex. Contrast has similar effects on orientation and spatial frequency discrimination: as contrast is increased above detection threshold, orientation and spatial frequency discrimination performance improves but reaches maximum levels at quite low contrasts. Further increases in contrast produce no further improvements in discrimination. We measured the effects of contrast on response amplitude, orientation and spatial frequency selectivity, and response variance of neurons in the cat's striate cortex. Orientation and spatial frequency selectivity vary little with contrast. Also, the ratio of response variance to response mean is unaffected by contrast. Although, in many cells, response amplitude increases approximately linearly with log contrast over most of the visible range, some cells show complete or partial saturation of response amplitude at medium contrasts. Therefore, some cells show a clear increase in slope of the orientation and spatial frequency tuning functions with increasing contrast, whereas in others the slopes reach maximum values at medium contrasts. Using receiver operating characteristic analysis, we estimated the minimum orientation and spatial frequency differences that can be signaled reliably as a response change by an individual cell. This analysis shows that, on average, the discrimination of orientation or spatial frequency improves with contrast at low contrasts more than at higher contrasts. Using the optimal stimulus for each cell, we estimated the contrast threshold of 48 neurons. Most cells had contrast thresholds below 5%. Thresholds were only slightly higher for nonoptimal stimuli. Therefore, increasing the contrast of sinusoidal gratings above approximately 10% will not produce large increases in the number of responding cells. The observed effects of contrast on the response characteristics of nonsaturating cortical cells do not appear consistent with the psychophysical results. Cells that reach their maximum response at low-to-medium contrasts may account for the contrast independence of psychophysical orientation and spatial frequency discrimination thresholds at medium and high contrasts.

scholarly journals DISTURBANCES OF VISUAL ORIENTATION

1918 ◽  
Vol 2 (10) ◽  
pp. 506-516 ◽  
Author(s):  
G. Holmes
Keyword(s):  
Visual Orientation

Card posting does not rely on visual orientation: A challenge to past neuropsychological dissociations

2021 ◽  
pp. 107920
Author(s):  
Constanze Hesse ◽  
Kamilla Bonnesen ◽  
Volker Franz ◽  
Thomas Schenk
Keyword(s):  
Visual Orientation

Effect of forward head inclination on visual orientation during lateral body tilt.

1972 ◽  
Vol 96 (1) ◽  
pp. 203-205 ◽  
Author(s):  
N. J. Wade
Keyword(s):  
Body Tilt ◽  
Visual Orientation ◽  
Lateral Body

Field Independence and Resistance to Reversal of Perspective

1966 ◽  
Vol 22 (2) ◽  
pp. 543-546 ◽  
Author(s):  
Frank Haronian ◽  
A. Arthur Sugerman
Keyword(s):  
Short Form ◽  
Necker Cube ◽  
Normal Male ◽  
Field Independence ◽  
Embedded Figures Test ◽  
Following Instructions ◽  
Independence Results ◽  
Male University Students ◽  
Rod And Frame Test ◽  
Rod And Frame

The more successful 102 normal male university students were in following instructions to resist fluctuations of the Necker cube, the more field-independently they scored on both Series III of the rod-and-frame test ( r = .28) and on Jackson's short form of the embedded-figures test ( r = .24). Under neutral instructions, the correlations were nil. Results support prior findings that a small but significant portion of the variance of Necker cube fluctuations under instructions to control the rate of shift is related to scores of field independence. Results support Jackson's finding that ability to control the rate of shift is not related to intelligence.

EFFECTS OF CONGRUENCE-INCONGRUENCE BETWEEN LOCUS OF CONTROL AND FIELD DEPENDENCE ON INTERPERSONAL BEHAVIOR

1977 ◽  
Vol 5 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Amy B. Ehrlich ◽  
Andrew Broughton ◽  
Glen M. Vaught
Keyword(s):  
Locus Of Control ◽  
Self Report ◽  
Interpersonal Behavior ◽  
Interpersonal Distance ◽  
Social Stimuli ◽  
Control Scale ◽  
Perceptual Skills ◽  
Interpersonal Needs ◽  
Report Measure ◽  
Rod And Frame

Lefcourt and Telegdi's concepts of congruence and incongruence between perceptual skills and expectancies were examined with respect to interpersonal behavior. Four groups of subjects were formed using a portable rod-and-frame device and Rotter's locus of control scale. As predicted the two congruent groups used significantly less interpersonal distance with each of four different social stimuli as measured by Duke and Nowicki's comfortable interpersonal distance scale. There was no difference between congruent and incongruent groups on a self-report measure of interpersonal needs.

Spanish Children's Scores on Children's Embedded Figures and Rod and Frame Tests

1993 ◽  
Vol 76 (3_suppl) ◽  
pp. 1259-1263 ◽  
Author(s):  
Juan Antonio Amador-Campos ◽  
Teresa Kirchner-Nebot
Keyword(s):  
Field Dependence ◽  
Test Scores ◽  
Embedded Figures Test ◽  
Embedded Figures ◽  
Measure Field ◽  
Rod And Frame Test ◽  
Rod And Frame

The Children's Embedded Figures Test and the Rod and Frame Test were administered to 179 boys and 110 girls of an average age of 9.03 years to measure field dependence-independence. No significant gender-related differences were found on either test. Scores on these tests were moderately and significantly correlated.

To visual orientation of dot and line patterns

1989 ◽  
Vol 7 (2-4) ◽  
pp. 290-291
Author(s):  
P. Lánský ◽  
T. Radil ◽  
N. Yakimoff
Keyword(s):  
Visual Orientation ◽  
Line Patterns
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