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The only abnormality which can be seen on the ECG curve is a prolonged PR Interval but only when acute alcohol poisoning has been done. In the referenced paper the patient had consumed 3.7 g/l (3.7 per mille) which resulted in a PR prolongation of 200-300 ms. The normal PR interval is different for everybody but it normally is 0.12 to 0.20 seconds. A long ...


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The pacemaker potential is interesting (to a biologist) as it involves your typical Na/K channels, Ca channel, as well as a funny current (If) or alternatively called hyperpolarization-activated current. The funny current is a mixed sodium-potassium current that activates upon hyperpolarization at voltages in the diastolic range (normally from ...


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First bump is called P point, middle is QRS wave (as in Q-down, R-up, S-down), and last bump is T. Every feature is representation of electrical activity in certain region of heart. E.g. P bump is contraction of atrium. See more here. Bumps are P/QRS/T. The reason why you see so many different recordings is that it was taken with many-lead ECG. Heart has ...


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A microelectrode is quite literally a small electrode and they come in a variety of shapes. The glass pipette electrode you are specifically referring to is mostly used for patch clamp experiments. Patch clamp experiments are performed using various configurations: Source: Leica So basically there is the cell-attached configuration, where a patch of ...


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Answer version1 (read the comments, I leave v1 for the those who can make the same assumptions in the future) To answer the question we should clarify some general concepts and processes mentioned it the clause: EMG is performed by means of direct placement of the electrode (the are two types here - surface-EMG and needle-EMG) on/into the skeletal ...



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