I am building an portable health device , for which i am want ECG , GSR etc. then i came across 2 terms Bioimpedance and Biopotentials. Are these two same. Also can any one say the applications of these ?
Add a comment
|
1 Answer
\$\begingroup\$
\$\endgroup\$
2
A biopotential sensor is simply a voltage meter with skin-compatible electrodes. A bioimpedance sensor is an ohmmeter, typically an AC ohmmeter. That's all there's to it. You've already listed the applications: measurement of ECG, galvanic skin response, EKG, EEG, EOG, etc.
Usually an impedance meter already has a voltage meter built-in, so any bioimpedance sensor can be easily made to sense the open circuit voltage when the excitation current is turned off.
answered Apr 30, 2015 at 15:10
Kuba hasn't forgotten MonicaKuba hasn't forgotten Monica
49.2k1 gold badge44 silver badges139 bronze badges
-
\$\begingroup\$ Can you name a IC for biopotential and for Bioimpedance. ie like AFE4300 it can be used for ECG but, can it be used for GSR too. \$\endgroup\$ Commented May 1, 2015 at 9:09
-
\$\begingroup\$ There's no "IC for it". You have to understand the range of physical parameters that you wish to measure, and base your design on it. Understand the physiology first, not last. \$\endgroup\$ Commented May 1, 2015 at 16:10