The t-test and the one-way analysis of variance (ANOVA) are the two most common tests used for this purpose. The t-test is a statistical hypothesis test where the test statistic follows a Studentâs t distribution if the null hypothesis is supported.
Other causes of damage to these nerves include head traumaand tearing of the nerves, smoking, cocaine, or brain tumors impinging on the nerves. Optic Nerve (CN-II): Sensory for vision. Its nerve arise from the ganglion cells of the retina and pass through theoptic foramen (optic canal).agus Nerve (CN-X): Mixed: sensory and motor. Passes through the jugular foramen. It passes through the neck nextto the carotid arteries, after which the two travel together next to the esophagus through thediaphragm into the abdomen.
Cranial Nerves 5 & 7 - Corneal reflex The ophthalmic division (V1) of the 5th nerve is the sensory or afferent limb and a branch of the 7th nerve to the orbicularis oculi muscle is the motor or efferent limb of the corneal reflex. The limbal junction of the cornea is lightly touched with a strand of cotton.etection of the smell is more important than the actual identification. Cranial Nerve 2- Visual acuity The first step in assessing the optic nerve is testing visual acuity. This can be done with a standard Snellen chart or with a pocket chart (Rosenbaum).