Report Abuse. Routers and modems are two of the most common computer peripherals, yet many people don't know the function of each one. While the two devices may look similar, they each serve a difference purpose. Fortunately, the functions of the two devices are pretty easy to understand.
I read your question. Echogenicity is the ability to create an echo, i.e. return a signal in ultrasound examinations. Increased echogenicity of the liver usually means that there is fatty infiltration in parts of the liver. In certain causes a focal area of increased echogenicity would indicate a discrete mass.
In medical and basic research, the correlation of particular brain waves with sleep phases, emotional states, psychological profiles, and types of mental activities is ongoing. Four simple periodic rhythms recorded in the EEG are alpha, beta, delta, and theta.These rhythms are identified by frequency (Hz or cycles/sec) and amplitude (Table 3.1). The amplitudes recorded by scalp electrodes are in the range of microvolts (uV or l/l,OOO,OOO of a volt).n medical and basic research, the correlation of particular brain waves with sleep phases, emotional states, psychological profiles, and types of mental activities is ongoing. Four simple periodic rhythms recorded in the EEG are alpha, beta, delta, and theta.