High-luminance monochrome vs low-luminance monochrome and color softcopy displays: observer performance and visual search efficiency

2007 ◽  
Author(s):  
Elizabeth A. Krupinski ◽  
Hans Roehrig ◽  
Jiahua Fan ◽  
Takahiro Yoneda
Keyword(s):  
Visual Search ◽  
Observer Performance ◽  
Search Efficiency ◽  
High Luminance ◽  
Low Luminance

Do aging displays impact observer performance and visual search efficiency?

2007 ◽  
Author(s):  
Elizabeth A. Krupinski ◽  
Hans Roehrig ◽  
Jiahua Fan
Keyword(s):  
Visual Search ◽  
Observer Performance ◽  
Search Efficiency

Monochrome Versus Color Softcopy Displays for Teleradiology: Observer Performance and Visual Search Efficiency

2007 ◽  
Vol 13 (6) ◽  
pp. 675-682 ◽  
Author(s):  
Elizabeth A. Krupinski ◽  
Hans Roehrig ◽  
Jiahua Fan ◽  
Takahiro Yoneda
Keyword(s):  
Visual Search ◽  
Observer Performance ◽  
Search Efficiency ◽  
Versus Color

scholarly journals The Effect of Visual Search Efficiency on Response Preparation

2008 ◽  
Vol 19 (2) ◽  
pp. 128-136 ◽  
Author(s):  
Geoffrey F. Woodman ◽  
Min-Suk Kang ◽  
Kirk Thompson ◽  
Jeffrey D. Schall
Keyword(s):  
Visual Search ◽  
Search Efficiency ◽  
Response Preparation

scholarly journals Visual Search Efficiency for Features in Chernoff Faces

2013 ◽  
Vol 13 (9) ◽  
pp. 689-689 ◽  
Author(s):  
N. Siva ◽  
A. Chaparro ◽  
D. Nguyen ◽  
E. Palmer
Keyword(s):  
Visual Search ◽  
Search Efficiency

The effect of abnormality-prevalence expectation on naïve observer performance and visual search

Radiography ◽  
2013 ◽  
Vol 19 (3) ◽  
pp. 196-199 ◽  
Author(s):  
Don J. Nocum ◽  
Patrick C. Brennan ◽  
Richard T. Huang ◽  
Warren M. Reed
Keyword(s):  
Visual Search ◽  
Observer Performance ◽  
Naive Observer

Subjective and pupil responses to discomfort glare from small, high-luminance light sources

2018 ◽  
Vol 51 (4) ◽  
pp. 592-611 ◽  
Author(s):  
Y Tyukhova ◽  
CE Waters
Keyword(s):  
Pupil Size ◽  
Rating Scale ◽  
Light Sources ◽  
Background Luminance ◽  
High Luminance ◽  
Low Luminance ◽  
Point Rating Scale ◽  
Main Effect ◽  
Discomfort Glare ◽  
Relative Change

This study examined human subjective and pupil responses to small, high-luminance light sources seen against low-luminance backgrounds. Subjective judgements of glare using a seven-point rating scale and the change in pupil diameters following exposure to glare of 47 subjects were measured during evaluation of 36 conditions comprising three glare source luminances (20,000; 205,000; 750,000 cd/m2), two source positions (0°, 10°), two source sizes (10−5, 10−4 sr) and three background luminances (0.03; 0.3; 1 cd/m2). Data analysis suggests that the relative pupil size is correlated with subjective responses to discomfort glare to some extent (r = 0.659). Analysis of variance of relative pupil size measurements demonstrates a significant main effect of the background luminance suggesting that when the background luminance decreases, the relative pupil size increases. Relative pupil size shows the same trend as the relative change in illuminance at the eyes and the discomfort glare perception.

scholarly journals Functional brain organization for visual search in ASD

2008 ◽  
Vol 14 (6) ◽  
pp. 990-1003 ◽  
Author(s):  
BRANDON KEEHN ◽  
LAURIE BRENNER ◽  
ERICA PALMER ◽  
ALAN J. LINCOLN ◽  
RALPH-AXEL MÜLLER
Keyword(s):  
Visual Search ◽  
Brain Regions ◽  
Autism Spectrum ◽  
Neural Mechanisms ◽  
Search Efficiency ◽  
Typically Developing ◽  
Brain Organization ◽  
Activation Patterns ◽  
Set Size ◽  
Functional Brain Organization

AbstractAlthough previous studies have shown that individuals with autism spectrum disorder (ASD) excel at visual search, underlying neural mechanisms remain unknown. This study investigated the neurofunctional correlates of visual search in children with ASD and matched typically developing (TD) children, using an event-related functional magnetic resonance imaging design. We used a visual search paradigm, manipulating search difficulty by varying set size (6, 12, or 24 items), distractor composition (heterogeneous or homogeneous) and target presence to identify brain regions associated with efficient and inefficient search. While the ASD group did not evidence accelerated response time (RT) compared with the TD group, they did demonstrate increased search efficiency, as measured by RT by set size slopes. Activation patterns also showed differences between ASD group, which recruited a network including frontal, parietal, and occipital cortices, and the TD group, which showed less extensive activation mostly limited to occipito-temporal regions. Direct comparisons (for both homogeneous and heterogeneous search conditions) revealed greater activation in occipital and frontoparietal regions in ASD than in TD participants. These results suggest that search efficiency in ASD may be related to enhanced discrimination (reflected in occipital activation) and increased top-down modulation of visual attention (associated with frontoparietal activation). (JINS, 2008, 14, 990–1003.)

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