(Solved): The following two circuit schematics both show the measurement of galvanic skin response (GSR). Ski ...

The following two circuit schematics both show the measurement of galvanic skin response (GSR). Skin resistance is shown by the resistance \( \mathrm{R}_{\text {skin. }} \mathrm{V} 1 \) is the voltage source. V2 and \( \mathrm{V} 3 \) are the voltage probed between the two resistors. a. Using voltage division, write down an expression relating V1, V2, Rskin, R1 (left circuit) and V1, \( \mathrm{V} 3, R_{\text {skin, }}, \mathrm{R} 1 \) (right circuit). b. Would you pick R1 to be on the order of \( 10 \Omega, 1 \mathrm{k} \Omega \) or \( 1 \mathrm{M} \Omega \) ? Justify your answer. c. Suppose you are using the left circuit. When the subject is undergoing an episode of intense anxiety, what will happen to the voltage readout (V2)? d. In your opinion, which of the following circuit is more well suited for measuring GSR?