Answer:
a glutamate antagonist
an acetylcholine antagonist
Step-by-step explanation:
The nervous system works by receiving information from the sensory neurons sent by the parts of the body; eye, nose, ear, etc. and then sending information which is carried by motor neurons from the brain to other parts of the body.
For the case of Jorge who found himself in the middle of a field and could not recall the events that took place at night, it is possible that there was glutamate antagonist in his drink. One way that this drug works is that it reduces the activity of a neurotransmitter in the brain known as the acetylcholine. The presence of acetylcholine regulates REM sleep functions, causes muscle contraction and weakness, and activate several pain responses. This explains why Jorges cannot understand how he got to the middle of a field.