The frequency and amplitude of biopotentials oscillations in the EEG characteristic of the alpha-rhythm is Bbl6epuTe oguH OTBeT: a. . 14-35Hz up to 50mkV b 8-13Hz,30-70mkV C. . 1-2Hz , 200mkV d. 2-7Hz . 150mkV

The correct answer is b. $8-13Hz,30-70mkV$.<br /><br />The alpha rhythm is a type of brainwave pattern that is typically associated with a relaxed, awake state of mind. It is characterized by a frequency range of $8-13Hz$ and an amplitude range of $30-70mkV$. This means that the oscillations of the biopotentials in the EEG characteristic of the alpha rhythm occur within the frequency range of $8-13Hz$ and have amplitudes ranging from $30-70mkV$.