I wonder if a catheterized local delivery of anesthesia to the key thalamic or related structures would be sufficient to induce anesthesia. Maybe not worth the

I wonder if a catheterized local delivery of anesthesia to the key thalamic or related structures would be sufficient to induce anesthesia. Maybe not worth the vascular risk for people but could spare anesthetic effects on the rest of the brain for things like animal studies in neurology.