By Merrick Moseley BSc PhD, Alistair Fielder MD
This publication offers a precis and synthesis of present concerns and learn in the box of 1 of the main not easy paediatric eye stipulations - Amblyopia.
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Additional info for Amblyopia: A Multidisciplinary Approach, 1e
3). 3 Extracranial magnetic field generated by electrical current flow associated with neural activity. medium the magnetic fields generated by intra- and extracellular currents cancel each other for radially oriented cells. The standard solution to this problem is to record both MEG and EEG signals, as the latter are sensitive to radial sources. In our experience, however, we have not found 'silent sources' to be a significant problem with MEG recordings. There are at least three reasons for this: I.
10 shows a scatter plot of the relationship between the positional and contrast sensitivity losses for a group of strabismic (open symbols) and non-strabismic, anisometropic amblyopes (filled symbols). e, no loss). Vernier acuity measurements which probably involve very different mechanisms also support this conclusion by exhibiting a strong correlation with grating acuity (Levi and Klein, 1985). Strabismics do exhibit significant positional losses, but these are uncorrelated with their contrast sensitivity loss.
S. 100 o 4 8 12 POSITIONALSIGMA(pixeis) 5 10 15 20 POSITIONALSIGMA (pixels) F E 100 100 W 90 ~ 90 § 80 § 80 ~ 70 ~ 70 ~ ~ 60 50 60 50 o 5 10 15 20 POSITIONAL SIGMA(pixels) o 5 10 15 20 POSITIONALSIGMA (pixels) anomalous lateral interactions, or do anomalous lateral interactions result in positional uncertainty? T. 0 80 70 60 50 5 10 15 PATHANGLE (deg) 20 0 10 20 30 PATH ANGLE (degrees) where local luminance, local contrast and local orientation can provide powerful but indirect clues to position.