ABRET Localization and Polarity || Questions with correct solutions.

What is most useful when determining localization and polarity? a. activation b. montage c. frequency d. amplitude correct answers montage Negative polarity a. triphasic waves b. lambda c. alpha rhythm d. POSTS correct answers alpha rhythm Positive polarity a. PLEDs b. Mu rhythm c. Lambda d. vertex sharp wave correct answers Lambda The polarity convention for EEG states that the deflection is up if: a. input 2 is more negative than input 1 b. input 1 is more negative that input 2 c. input 1 is more positive that input 2 d. input 2 is equal to input 1 correct answers input 1 is more negative that input 2 In an EEG surface-negative wave will appear as: a. a biphasic deflection b either an upward or downward deflection c. a downward deflection d. an upward deflection correct answers either an upward or downward deflection No difference in voltage between input 1 and input 2 a. biopotential b. tripotential c. equipotential d. quadropotential correct answers equipotential What is the likely focus and polarity of the sharply contoured wave in the box? a. FP1 positive b. F7 negative