What is the medical term meaning surgical incision into the thalamus?

Thalamotomy (thalsm = thalamus + tom = cut + y = procedure) was first introduced to the medical world in the 1950s as an invasive procedure for the control of temors such as those associated with Parkinson's disease. Working on the side of the thalamus opposite the side with the tremors, the positive effects are immediate.

Subthalamic deep brain stimulation (DBS) is sometimes a perferred procedure since it is not as destructive.