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.
Optic Nerve. The Optic Nerve, also called Cranial Nerve II, is the nerve that transmits visual information from the Retina to the Brain. Optic Disc. The Optic Disc or Optic Nerve head is the point in the eye where the optic nerve fibers leave the retina.Due to absence of light sensitive rods and cones of the retina at this point, it is not sensitive to light and thus is also known as The Blind Spot or Anatomical Blind Spot.etina. The Retina is a thin layer of neural cells that lines the back of the eyeball of vertebrates and some cephalopods. In embryonal development, the retina and the optic nerve originate as outgrowths of the brain.