Deep Brain Stimulation of Hemiparkinsonian Rats with Unipolar and Bipolar Electrodes for up to 6 Weeks: Behavioral Testing of Freely Moving Animals

Figure 2

Schematic views of the unipolar DBS rat model. (a) Rat with stimulator in backpack; (b) sagittal view illustrating the locations of the implanted unipolar DBS electrode; (c) image of an explanted DBS mounting; (d) backpack vest with Velcro hooks; (e) stimulator in PMMA housing with pocket and current-pulse battery. 1: unipolar Pt/Ir electrode; 2: electrode cables; 3: gold-wire counter electrode; 4: biocompatible dental acrylic embedding all components; 5: anchor screw to fix the acrylic mounting to the skull; 6: electrode connector; 7: current-pulse battery connector.