Definition of ablative. 1  1 : of or relating to ablation. 2  2 : tending to ablate ablative material on a nose cone.
Occipital Nerve Block. An occipital nerve block is an injection that numbs the nerves at the back of the head. There are four nerves on each side of the scalp. Occipital nerves allow us to feel sensations in the scalp. An occipital nerve block is done to decrease headache pain, caused by migraine, injury (concussion), muscle tightness or occipital neuralgia. The medicine used is either a local anesthetic or a combination of a local anesthetic and a steroid. The medicine is placed around the occipital nerves, which are located just beneath the skin, in the back of the head. The occipital block is usually done in the office.
The occipital lobes are the center of our visual perception system. They are not particularly vulnerable to injury because of their location at the back of the brain, although any significant trauma to the brain could produce subtle changes to our visual-perceptual system, such as visual field defects and scotomas.isorders of the occipital lobe can cause visual hallucinations and illusions. Visual hallucinations (visual images with no external stimuli) can be caused by lesions to the occipital region or temporal lobe seizures.