Download Antennas by John Daniel Kraus PDF

By John Daniel Kraus

This article is for the path on antennas provided to the senior/graduate point by way of engineering departments. it's going to additionally attract training engineers engaged on antenna improvement. The textual content explains either the elemental thought of antennas and its software to functional designs. It presents entire insurance and is replete with attention-grabbing labored examples and not easy challenge units. The revision represents an intensive updating of fabric and now contains uncomplicated courses which are used for antenna layout and computational innovations.

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In both cases, it exhibited phasic visual responses, with latencies ranging between 40 and 50 ms. Thus, the execution of express saccades cannot be ascribed to the modification of the discharge of SGS neurons. On the other hand, the SGI neuron did not exhibit the same pattern of activation for regular and express saccades. For regular saccades, the SGI neuron exhibited a weak discharge with a latency of 40–50 ms, that is, similar to that of the visual responses of SGS neurons. This weak, phasic, “visual response” did not appear to be strong enough, by itself, to trigger the saccade burst generator circuits downstream of the SC.

The broad, gray tick marks in panel (c) represent saccade onset and offset. The visual cell displayed a second period of activation associated with the target image motion on the retina during the saccade. During gap trials, the fixation stimulus was extinguished 150 or 300 ms before the target appeared. The trials are aligned on target onset (the vertical line), and each set of trials is arranged in descending order of saccadic reaction time. Caption continues on next page. 6f, g) whereas the motor burst of visuomotor and motor cells is highly correlated with reaction time over the full range of saccadic latencies.

R. Hess et al. 1988a. The projection from the superficial to the deep layers of the superior colliculus: An intracellular horseradish peroxidase injection study in the hamster. J. Neurosci. 8:1384–1399. M. A. W. Rhoades. 1988b. Receptive-field properties and morphological characteristics of the superior collicular neurons that Microcircuit of the Superior Colliculus 33 project to the lateral posterior and dorsal lateral geniculate nuclei in the hamster. J. Neurophysiol. 59:1333–1351. B. M. Highstein.

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