A Novel Motion-on-Color Paradigm for Isolating Magnocellular Pathway Function in Preperimetric Glaucoma

2015 ◽  
Vol 56 (8) ◽  
pp. 4439 ◽  
Author(s):  
Wen Wen ◽  
Peng Zhang ◽  
Tingting Liu ◽  
Ting Zhang ◽  
Jian Gao ◽  
...  
Keyword(s):  
Magnocellular Pathway ◽  
Preperimetric Glaucoma ◽  
Pathway Function

scholarly journals Electrophysiological Testing of Dyslexia

2001 ◽  
Vol 44 (4) ◽  
pp. 131-134 ◽  
Author(s):  
Miroslav Kuba ◽  
Jana Szanyi ◽  
David Gayer ◽  
Jan Kremláček ◽  
Zuzana Kubová
Keyword(s):  
Visual Evoked Potentials ◽  
Reading Skills ◽  
Magnocellular Pathway ◽  
Motion Onset ◽  
Cortical Responses ◽  
Reported Effect ◽  
Pathway Function ◽  
The Mean ◽  
Late Maturation ◽  
Effect Of Light

We enlarged our previous study (Kubová Z. et al. Physiol Res 1995;44:87-89) giving an evidence about magnocellular pathway involvement (delayed motion-onset visual evoked potentials (M-VEPs)) in 70% of dyslexic children. In the new group presented here, only 48% of 25 dyslexics displayed prolonged latencies of cortical responses to motion stimuli. However, there was no correlation of this defect with the used quantification of the reading skills (reading quotients). No significant EEG frequency spectrum changes were found. 10 subjects from the former group, who were re-examined 4 years after the previous study at the mean age of 14 years, exhibited significant shortening of the M-VEP latencies compared to the original values. Also in control subjects a distinct improvement in magnocellular pathway function was proved (in M-VEP re-examination after 4 years). These results document rather late maturation of the magnocellular pathway, which is evident mainly in dyslexic children. In both groups of dyslexics an effect of colour in moving stimuli was also tested to verify the reported effect of light wavelengths onto the magnocellular pathway function. However, no latency differences among grey, green, pink, yellow and blue stimuli were observed.

The Influence of Visual Magnocellular Pathway on The Recognition of Chinese Character

2013 ◽  
Vol 40 (2) ◽  
pp. 141 ◽  
Author(s):  
Jing ZHAO ◽  
Hong-Yan BI ◽  
Yi QIAN
Keyword(s):  
Chinese Character ◽  
Magnocellular Pathway

scholarly journals Quantitative assessment of visual pathway function in blind retinitis pigmentosa patients

2021 ◽  
Vol 132 (2) ◽  
pp. 392-403
Author(s):  
Minfang Zhang ◽  
Wangbin Ouyang ◽  
Hao Wang ◽  
Xiaohong Meng ◽  
Shiying Li ◽  
...  
Keyword(s):  
Retinitis Pigmentosa ◽  
Quantitative Assessment ◽  
Visual Pathway ◽  
Pathway Function

MAGNOCELLULAR PATHWAY FOR ROTATION INVARIANT NEOCOGNITRON

1993 ◽  
Vol 04 (01) ◽  
pp. 43-54 ◽  
Author(s):  
CHRISTOPHER HIAN-ANN TING
Keyword(s):  
Neural Network ◽  
Visual System ◽  
Neural Network Model ◽  
Visual Information ◽  
Input Pattern ◽  
Arbitrary Orientation ◽  
Magnocellular Pathway ◽  
Rotation Invariant ◽  
Parvocellular Pathway ◽  
Simulation Programme

In the mammalian visual system, magnocellular pathway and parvocellular pathway cooperatively process visual information in parallel. The magnocellular pathway is more global and less particular about the details while the parvocellular pathway recognizes objects based on the local features. In many aspects, Neocognitron may be regarded as the artificial analogue of the parvocellular pathway. It is interesting then to model the magnocellular pathway. In order to achieve "rotation invariance" for Neocognitron, we propose a neural network model after the magnocellular pathway and expand its roles to include surmising the orientation of the input pattern prior to recognition. With the incorporation of the magnocellular pathway, a basic shift in the original paradigm has taken place. A pattern is now said to be recognized when and only when one of the winners of the magnocellular pathway is validified by the parvocellular pathway. We have implemented the magnocellular pathway coupled with Neocognitron parallel on transputers; our simulation programme is now able to recognize numerals in arbitrary orientation.

scholarly journals Diagnosing Preperimetric Glaucoma with Spectral Domain Optical Coherence Tomography

Ophthalmology ◽  
2012 ◽  
Vol 119 (11) ◽  
pp. 2261-2269 ◽  
Author(s):  
Renato Lisboa ◽  
Mauro T. Leite ◽  
Linda M. Zangwill ◽  
Ali Tafreshi ◽  
Robert N. Weinreb ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Preperimetric Glaucoma

Optimizing the Detection of Preperimetric Glaucoma by Combining Structural and Functional Tests

2015 ◽  
Vol 56 (13) ◽  
pp. 7794 ◽  
Author(s):  
Prema Sriram ◽  
Alexander Klistorner ◽  
Stuart Graham ◽  
John Grigg ◽  
Hemamalini Arvind
Keyword(s):  
Functional Tests ◽  
Preperimetric Glaucoma

Electrophysiological assessment of corticorespiratory pathway function in amyotrophic lateral sclerosis

2010 ◽  
Vol 11 (1-2) ◽  
pp. 57-62 ◽  
Author(s):  
Toshio Shimizu ◽  
Tetsuo Komori ◽  
Yumiko Kugio ◽  
Yumi Fujimaki ◽  
Kiyomitsu Oyanagi ◽  
...  
Keyword(s):  
Amyotrophic Lateral Sclerosis ◽  
Pathway Function ◽  
Lateral Sclerosis

Effect of residual slow pathway function on the time course of recurrences of atrioventricular nodal reentrant tachycardia after radiofrequency ablation of the slow pathway

1995 ◽  
Vol 75 (8) ◽  
pp. 628-630 ◽  
Author(s):  
John D. Hummel ◽  
S. Adam Strickberger ◽  
Brian D. Williamson ◽  
K. Ching Man ◽  
Emile Daoud ◽  
...  
Keyword(s):  
Radiofrequency Ablation ◽  
Time Course ◽  
Slow Pathway ◽  
Atrioventricular Nodal Reentrant Tachycardia ◽  
Reentrant Tachycardia ◽  
Pathway Function
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