I am pretty sure that the statement represented above should be filled with the fifth option from the scale and have a look like that : After being bitten by a black widow spider, Jean starts to convulse. This is a result of a resurgence of neurotransmitters understimulating her brain stem. I choose this one because in this case acetylcholine, norepinephrine, and GABA are being released through the neurotransmitters. Hope you will find it worth attention.