Hey JedKampe, There are numerous drugs and conditions that can cause a false positive for cocaine not to mention human error. Substances that can cause a false positive drug test result: Amoxicillin is an antibiotic in the penicillin group of drugs. It fights bacteria in your body. Ampicillin is another antibiotic similar to amoxicillin.
When the nerve is damaged,the action potential remains between the electrodes and doesn't reach the second electrode (i.e potential difference remains positive and doesn't go into negative phase) , the biphasic action potential changes into monophasic action potential i.e with single phase. Source(s):E: biphasic action potential change into the monophasic action? Why does the biphasic action potential change into the monophasic action potential after nerve injury between the two recording electrodes?
The action potential is a change in the local potential difference across the cell membrane that can be transmitted to adjacent areas of the cell surface, such as the axon of a neuron where it propagates. The action potential happens because of quick local changes in the conductance of the membrane to sodium, potassium and chloride ions. The local current is the movement of these ions across the membrane and through the extracellular and intracellular spaces.