Several regions of the brain are involved in smooth-pursuit eye movement (SPEM) control, including the cortical areas MST (medial superior temporal) and FEF (frontal eye field). It has been shown that the eye-movement responses to a brief perturbation of the visual target during ongoing pursuit increases with higher pursuit velocities. To further investigate the underlying neuronal mechanism of...

Rabbitfish is economically valuable teleost species which lives in shallow coastal waters. Two species of rabbit fish have been recognized in southern sea of Iran (Persian gulf) as namely Siganus sutor and Siganus javus. In the current study, in order to investigate the histology of the annular ligament of the S. javus’ eye, the prepared sections of the eyes of twelve healthy specimens were stu...

1. Experiments have been conducted in order to establish the changes in oculomotor activity which take place when the human subject attempts to pursue an intermittently illuminated moving target. 2. In an initial experiment, target motion in the horizontal plane was composed of one or two sinusoids at frequencies between 0.11 and 0.2 Hz. The target was illuminated for varying durations (10-320 ...

We used apparent motion targets to explore how degraded visual motion alters smooth pursuit eye movements. Apparent motion targets consisted of brief stationary flashes with a spatial separation (Deltax), temporal separation (Deltat), and apparent target velocity equal to Deltax/Deltat. Changes in pursuit initiation were readily observed when holding target velocity constant and increasing the ...

The true-differential superconductor on-chip amplifier has complementary outputs that float with respect to chip ground. This improves signal integrity and compatibility the receiving semiconductor stage. Both source-terminated non-source-terminated designs producing 4mV demonstrated rejection of a large common mode interference in package. Measured margins are $\pm$8.5% on output bias, $\pm$28...

To investigate age dependent changes we analysed torsional eye movement responses to binaural and monaural galvanic vestibular stimulation (GVS) in 57 healthy subjects (20-69 years old). GVS (1-3 mA) induced torsional eye movements consisting of static torsion toward the anode (amplitude 1-6 degrees ) and superimposed torsional nystagmus (slow phase velocity 0.5-3 degrees /s, quick phase amplit...

Introduction: Because of bilateral involvement in many cases with diabetic macular edema, Intravitreal bevacizumab injection perform in both eyes. There are some reports of therapeutic effects in the fellow eye after monocular injection of anti-vascular endothelial growth factors. In this study we describe a case of bilateral improvement of diabetic macular edema following unil...

" _ ~~~The Chemist;ry of RodVision: _ ~George WaZld.....287 Technical Papers The Informational Capacity of the Human Eye: Homer Jacobson ............... 292 The Percutaneous Absorption of Water: Alna S. Szczev4iak, Henry Sherman, and Robert S. Harrisu. . 293 Social Fitness vesus Reproductive Fitness: S. C. Reed and J. D. Palm ...... .. . . 294 A Rich Sourc of Y-Carotene: B. L. Smits andHE.L Mit...