نتایج جستجو برای: forced orientation

تعداد نتایج: 152827  

Journal: :Journal of physics 2023

Abstract In this paper, a method of analyzing and processing information loss under fire in nuclear power plants is proposed. By using method, we can determine which valid. At the same time, provides solution to management for invalid information. screening used emergency operating procedures (EOP) its state conditions, appropriate corrective measures (such as redundant information, forced valu...

2012
Bruce E. Morton

INTRODUCTION Recently, three independent, intercorrelated biophysical measures have provided the first quantitative measures of a binary form of behavioral laterality called "Hemisity," a term referring to inherent opposite right or left brain-oriented differences in thinking and behavioral styles. Crucially, the right or left brain-orientation of individuals assessed by these methods was later...

Journal: :Vision Research 2000
I. Fine Robert A. Jacobs

Our goal was to differentiate low and mid level perceptual learning. We used a complex grating discrimination task that required observers to combine information across wide ranges of spatial frequency and orientation. Stimuli were 'wicker'-like textures containing two orthogonal signal components of 3 and 9 c/deg. Observers discriminated a 15% spatial frequency shift in these components. Stimu...

Journal: :Investigative ophthalmology & visual science 1997
R E Näsänen H T Kukkonen J M Rovamo

PURPOSE Human pattern discrimination performance has been reported to be largely independent of stimulus contrast but to depend on stimulus area. The authors propose a model that combines the effects of spatial integration and contrast. The model is based on the computation of similarity between pattern templates in memory and signals to be discriminated using normalized correlation. There are ...

Journal: :Current Biology 2012
Sung Jun Joo Geoffrey M. Boynton Scott O. Murray

The standard view of neurons in early visual cortex is that they behave like localized feature detectors. Here we demonstrate that processing in early visual areas goes beyond feature detection by showing that neural responses are greater when a feature deviates from its context compared to when it does not deviate from its context. Using psychophysics, fMRI, and electroencephalography methodol...

2015
Bart B G T Alberts Luc P J Selen Wim I M Verhagen W Pieter Medendorp

Patients with bilateral vestibular loss have balance problems in darkness, but maintain spatial orientation rather effectively in the light. It has been suggested that these patients compensate for vestibular cues by relying on extravestibular signals, including visual and somatosensory cues, and integrating them with internal beliefs. How this integration comes about is unknown, but recent lit...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1997
M W Greenlee A T Smith

The present investigation explored the extent to which extrastriate cortex is necessary for various aspects of motion processing and whether the processing of first-order (Fourier) and second-order (non-Fourier) motion involves the same extrastriate cortical regions. Orientation, direction, and speed discrimination thresholds were measured in 21 patients with unilateral damage to the lateral oc...

Journal: :The Journal of experimental biology 2004
Brian S Nelson Roderick A Suthers

Sound localization is critical to communication when signalers are distributed widely in space and when reverberations that accumulate over distance might otherwise degrade temporal patterns in vocalizations. We readdress the accuracy with which a small passerine bird, the eastern towhee, Pipilo erythrophthalmus L., is able to resolve azimuth in the field. We then report results from two-altern...

2015
Minghai Long Weiqian Jiang Dechen Liu Haishan Yao

As an important animal model to study the relationship between behaviour and neural activity, the mouse is able to perform a variety of visual tasks, such as orientation discrimination and contrast detection. However, it is not clear how stimulus contrast influences the performance of orientation discrimination in mice. In this study, we used two task designs, two-alternative forced choice (2AF...

2012
Endel Põder

Crowding is related to an integration of feature signals over an inappropriately large area in the visual periphery. The rules of this integration are still not well understood. This study attempts to understand how the orientation signals from the target and flankers are combined. A target Gabor, together with 2, 4, or 6 flanking Gabors, was briefly presented in a peripheral location (4° eccen...

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