Sorry I didn't reply for this long, my laptop crashed, I just fixed it today
Olfactory Nerve: The olfactory nerve carries sensory information for the sense of smell, thus is responsible for smell. Manipulating this nerve signal, one could alter what the victims smells/percieves.
: Optic Nerve:The optic nerve, transmits visual information from the retina to the brain, so obviously it's responsible for vision. manipulating it's signals, one could create illusions, causing the victim to see whatever the user wants him to see.
Occulomotor Nerve:The oculomotor nerve controls most of the eye's movements, including constriction of the pupil and maintaining an open eyelid.
Trocheal Nerve:The trochlear nerve is a motor nerve that innervates a single muscle: the superior oblique muscle of the eye.
I feel the two cranial nerve above are to be addressed together, so I'll say that, manipulating this nerve signal results in causing the victim to fall asleep, or to make him blind or at least, bad vision...I may be wrong
Trigeminal Nerve:the trigeminal nerve is a nerve responsible for sensation in the face and certain motor functions such as biting and chewing
Abducens Nerve:The abducens nerve or abducent nerve , controls the movement of a single muscle, the lateral rectus muscle of the eye.
Facial Nerve:The facial nerve controls the muscles of facial expression, and functions in the conveyance of taste sensations from the anterior two-thirds of the tongue and oral cavity. Manipulating the signal makes the user able to alter the users taste bud
Vestibulocochlear Nerve:The vestibulocochlear nerve transmits sound and equilibrium (balance) information from the inner ear to the brain. altering this signal, the user could alter the sound heard by the user, making the victim hear what the user wants him to hear
Glossopharyngeal Nerve:The glossopharyngeal nerve carries afferent sensory and efferent motor information.
Vagus Nerve:Besides output to the various organs in the body, the vagus nerve conveys sensory information about the state of the body's organs to the central nervous system. altering the signal of this nerve, the user is to make the user think they feel something that they do not, or maybe paralyze them
Spinal Accessory Nerve:The spinal accessory nerve provides motor innervation from the central nervous system to two muscles of the neck: the sternocleidomastoid muscle and the trapezius muscle. The sternocleidomastoid muscle tilts and rotates the head, while the trapezius muscle has several actions on the scapula, including shoulder elevation and adduction of the arm.
altering the signal of this one could cause the victim to think they're paralysed/causes paralysis
Hypoglossal Nerve:The hypoglossal nerve controls tongue movements of speech, food manipulation, and swallowing.
Sorry it's been four to five years since I studied biology, and I'm studying engineering now, so I don't remember most of this stuff