A. Zvi Meiri

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The 3-dot hyperacuity task was given to two subjects under three experimental paradigms: constant luminance, constant energy and constant duration. Hyperacuity was obtained under conditions (3 dots, 2 msec exposure) which rule out any significant temporal or spatial averaging. There was a clear threshold decrease in the constant luminance paradigm as(More)
Imposing a total-order on a 2-D discrete random eld induces an orthogonal decomposition of the random eld into two components: A purely-indeterministic eld and a deterministic one. The purely-indeterministic component is shown to have a 2-D whiteinnovations driven moving-average representation. The 2-D deterministic random eld can be perfectly predicted(More)
Introduction Chronically shunted patients with functioning shunts are often characterized as having slit or smaller than normal ventricles and chronic headaches. In this study, we used Diffusion Tensor Imaging (DTI) to quantitatively analyze the directionality of water diffusion in the internal capsule (IC) and the corpus callosum (CC) in these patients(More)
Introduction Chronic headaches are a well-documented complaint of shunted hydrocephalic patients. However, it is also one of the signs of shunt malfunction. Cranial compliance deficiency may be a cause of chronic headaches in some chronically shunted patients with functioning shunts (often with slit or smaller than normal ventricles). This study aims to use(More)
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