This is the best explanation sir. But my doubt is that: current direction is taken to be opposite to that of the direction negative charges .so here in the pic 1 current is from right lower corner to left upper corner. But the vector is pointed left to right . How does this relate sir? Should we take the direction of negative charges as vector?
In ECG, the vectors doesn’t represent the direction of current!! Though we are recording electrical vectors, the convention is that ECG waves represent the Direction of progression of Depolarization wave. Viewing the depolarization wave from positive electrode, if it approaches the electrode then ECG machine is designed to produce a positive wave!! It’s not intended to truly represent current direction as in Physics!!
Electrons always flow from - to + to cause a positive deflection in voltmeter. Think of a 1.5 v battery for example; if you reverse the polarity, it reads -1.5 v. So, electrons must be flowing from - to + electrode in lead II (example) to cause a positive deflection; the dipole is pointing in that direction (and polarity is normal as indicated for a battery). aVR is negative because you have reversed the polarity of electrodes.
Good video, sir. Electrons always flow from - to + to cause a positive deflection in voltmeter. Think of a 1.5 v battery for example. It is 1.5 v when polarity is normal (- to +); if you reverse the polarity (= to -), it reads -1.5 v. So, electrons must be flowing from - to + electrode in lead II (example) to cause a positive deflection; the dipole is pointing in that direction (and polarity is normal as indicated for a battery). aVR is negative because you have reversed the polarity of electrodes.
a voltmeter does not measure current. that's an ammeter. the video did not explain the concept of a dipole and how it generates and electric field and thus a difference in electric potential that will be picked up by the voltmeter. I'm not sure the creator of the video knows how dipoles actually cause a difference in electric potential.
Can you explain the concept of a dipole and how it generates and electric field and thus a difference in electric potential that will be picked up by the voltmeter? Thanks in advance.@@tristan9606-k4q
Nice presentation, very impressive
Dr.Navas
Thank you sir
Thank you for this video, I’m just starting a physiology course. This was very helpful. Thank you!
You are welcome
This is the best explanation sir. But my doubt is that: current direction is taken to be opposite to that of the direction negative charges .so here in the pic 1 current is from right lower corner to left upper corner. But the vector is pointed left to right . How does this relate sir? Should we take the direction of negative charges as vector?
In ECG, the vectors doesn’t represent the direction of current!! Though we are recording electrical vectors, the convention is that ECG waves represent the Direction of progression of Depolarization wave. Viewing the depolarization wave from positive electrode, if it approaches the electrode then ECG machine is designed to produce a positive wave!! It’s not intended to truly represent current direction as in Physics!!
Electrons always flow from - to + to cause a positive deflection in voltmeter. Think of a 1.5 v battery for example; if you reverse the polarity, it reads -1.5 v. So, electrons must be flowing from - to + electrode in lead II (example) to cause a positive deflection; the dipole is pointing in that direction (and polarity is normal as indicated for a battery). aVR is negative because you have reversed the polarity of electrodes.
Where I can get remaining videos plz help
Good video, sir. Electrons always flow from - to + to cause a positive deflection in voltmeter. Think of a 1.5 v battery for example. It is 1.5 v when polarity is normal (- to +); if you reverse the polarity (= to -), it reads -1.5 v. So, electrons must be flowing from - to + electrode in lead II (example) to cause a positive deflection; the dipole is pointing in that direction (and polarity is normal as indicated for a battery). aVR is negative because you have reversed the polarity of electrodes.
a voltmeter does not measure current. that's an ammeter. the video did not explain the concept of a dipole and how it generates and electric field and thus a difference in electric potential that will be picked up by the voltmeter. I'm not sure the creator of the video knows how dipoles actually cause a difference in electric potential.
Can you explain the concept of a dipole and how it generates and electric field and thus a difference in electric potential that will be picked up by the voltmeter? Thanks in advance.@@tristan9606-k4q
Thanks!
If u don't know then dont teach
Let us know what you think is wrong here, dude. Otherwise, stay quiet.