scholarly journals Smaller Fixation Target Size Is Associated with More Stable Fixation and Less Variance in Threshold Sensitivity

PLoS ONE ◽  
2016 ◽  
Vol 11 (11) ◽  
pp. e0165046 ◽  
Author(s):  
Kazunori Hirasawa ◽  
Kana Okano ◽  
Risako Koshiji ◽  
Wakana Funaki ◽  
Nobuyuki Shoji
PeerJ ◽  
2013 ◽  
Vol 1 ◽  
pp. e9 ◽  
Author(s):  
Michael B. McCamy ◽  
Ali Najafian Jazi ◽  
Jorge Otero-Millan ◽  
Stephen L. Macknik ◽  
Susana Martinez-Conde

1979 ◽  
Vol 44 ◽  
pp. 41-47
Author(s):  
Donald A. Landman

This paper describes some recent results of our quiescent prominence spectrometry program at the Mees Solar Observatory on Haleakala. The observations were made with the 25 cm coronagraph/coudé spectrograph system using a silicon vidicon detector. This detector consists of 500 contiguous channels covering approximately 6 or 80 Å, depending on the grating used. The instrument is interfaced to the Observatory’s PDP 11/45 computer system, and has the important advantages of wide spectral response, linearity and signal-averaging with real-time display. Its principal drawback is the relatively small target size. For the present work, the aperture was about 3″ × 5″. Absolute intensity calibrations were made by measuring quiet regions near sun center.


2021 ◽  
Vol 47 (2) ◽  
pp. 313-324 ◽  
Author(s):  
Dirk Walther Sommerfeldt ◽  
Peter Paul Schmittenbecher

Abstract Purpose Non-unions of the distal humerus are rare complications of common children’s fractures such as radial condyle fractures and supracondylar fractures. The aim of this paper was to update the knowledge about etiology, reasons, management, and results of these troublesome, and sometimes debilitating entities. Methods The sparse literature concerning nonunions following condylar or supracondylar fractures was analyzed together with the presentation of some typical clinical cases. Results In most of the cases, non-unions were induced by neglect, unstable fixation, too early implant removal, too much revision surgery, and an inconsequent transfer of follow-up algorithms, or combinations of the above. Treatment of non-union should start as early as possible because the effort of required surgery increases with time that the nonunion has been neglected. Often a combination of stable fixation of the pseudarthrosis and correction of the elbow axis are necessary to achieve a satisfying outcome. Conclusion In pediatric traumatology, qualified and consequent care for children’s fractures of the distal humerus can prevent rare complications such as non-unions in almost any situation. If such a disturbance of healing is noticed, immediate and adequate, i.e. children specific surgical consequences achieve best results.


2016 ◽  
Vol 54 (5) ◽  
pp. 573-578 ◽  
Author(s):  
Leandro Benetti De Oliveira ◽  
Jose Mauricio Nunes Reis ◽  
Rubens Spin-Neto ◽  
Marisa Aparecida Cabrini Gabrielli ◽  
Yener Oguz ◽  
...  

2021 ◽  
pp. 174702182110248
Author(s):  
Xiaogang Wu ◽  
Aijun Wang ◽  
Ming Zhang

The normalization model of attention (NMoA) predicts that the attention gain pattern is mediated by changes in the size of the attentional field and stimuli. However, existing studies have not measured gain patterns when the relative sizes of stimuli are changed. To investigate the NMoA, the present study manipulated the attentional field size, namely, the exogenous cue size. Moreover, we assessed whether the relative rather than the absolute size of the attentional field matters, either by holding the target size constant and changing the cue size (experiments 1-3) or by holding the cue size constant and changing the target size (experiment 4), in a spatial cueing paradigm of psychophysical procedures. The results show that the gain modulations changed from response gain to contrast gain when the precue size changed from small to large relative to the target size (experiments 1-3). Moreover, when the target size was once again made larger than the precue size, there was still a change in response gain (experiment 4). These results suggest that the size of exogenous cues plays an important role in adjusting the attentional field and that relative changes rather than absolute changes to exogenous cue size determine gain modulation. These results are consistent with the prediction of the NMoA and provide novel insights into gain modulations of visual selective attention.


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