It is usually assumed that an action potential starts immediately at the stimulating electrode. if this were true, both methods for calculating conduction velocity would provide the same answer. when a strong stimulus intensity is used, the action potential may begin some distance away from the stimulating electrode. under these conditions, the difference method would be more accurate. did you observe any important difference between the conduction velocity values?

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.

it takes about 30 days for it to break down