Dr. Ahmed will use a , or a three dimensional map of the brain, and a computer, to make sure the electrode is placed in the correct location in the rat.

The correct answer is stereotaxic atlas

The stereotaxic approach represented remarkable technical progress in neurosurgery. It has precise indications and many advantages, and it has innovated the therapy of several focal diseases of the brain (that is, when the disease is being caused by a pathological alteration that can be located in a particular and restricted area of the brain), such as brain tumors, congenital vascular disorders, Parkinson's disease, epileptic outbreaks, etc.

A brain atlas is a kind of map of these structures for the neurosurgeon. Depending on the system that is used (there are many variations), each brain structure is given three numbers, or coordinates: in the rectangular reference system, or Cartesian coordinate system, they represent positions along three axes or dimensions.

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