نتایج جستجو برای: gamma discrimination
تعداد نتایج: 186928 فیلتر نتایج به سال:
A fundamental property of cortical neurons is the capacity to exhibit adaptive changes or plasticity. Whether adaptive changes in cortical responses are accompanied by changes in synchrony between individual neurons and local population activity in sensory cortex is unclear. This issue is important as synchronized neural activity is hypothesized to play an important role in propagating informat...
Gamma band modulations in neural activity have been proposed to mediate attentional processes. To support a causal link between gamma activity and attentional selection, we attempt to evoke gamma oscillations by a 50-Hz subliminal flicker. We find that a subliminal 50-Hz flicker at a target location, before target presentation, speeds up and enhances target detection and discrimination. This ef...
فرض کنید $ g $ یک گراف ساده، $ c(x) $ حلقه ای از تمام توابع پیوسته ی حقیقی مقدار روی فضای کاملاً منظم هاسدورف $ x $ و $ gamma(c(x)) $ گراف مقسوم علیه-صفر در حلقه ی $ c(x) $ باشد، در این پایان نامه ارتباط بین ویژگی های گراف $ gamma(c(x)) $، ویژگی های حلقه ی $ c(x) $ و ویژگی های توپولوژیکی فضای $ x $ بررسی می شود. سپس نشان داده می شود عدد خوشه ای ...
A first comparison has been made between the pulse-shape discrimination characteristics of a novel He-based pressurized scintillation detector and a NE-213 liquid-scintillator reference detector using an Am/Be mixed-field neutron and gamma-ray source and a high-resolution scintillation-pulse digitizer. In particular, the capabilities of the two fast neutron detectors to discriminate between neu...
Abstract The traditional gamma energy spectrum measurement system performs filtering, shaping, amplification, baseline recovery, stacking discrimination, peak hold, and low-speed ADC sampling on the pulse signal output by gamma-ray detector. It generates curves. There are problems such as large dead time accumulation. A high-speed digital processing chip (FPGA) a used to perform full amplified ...
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