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. Author manuscript; available in PMC: 2012 Nov 15.
Published in final edited form as: J Neurol Sci. 2011 Nov 15;310(1-2):44–49. doi: 10.1016/j.jns.2011.07.027

Figure 6.

Figure 6

Comparison of two similar tracks. Both anterior and central tracks assign reasonable length to the STN (anterior track = 5.2 mm, central track = 3.98 mm). It was not straightforward using IOM, the golden standard, to decide which track was more optimal. QD shows that the microelectrode in the anterior track entered the STN first while the central track microelectrode entered the STN after advancing the drive deeper by 1.2 mm. Overlay of the MUA of both tracks confirmed that the longer portion of the STN was captured by an anterior track (“Best”). Note also that the MUA remains elevated at the end of recording at the electrode depth 3.52 mm, indicating that the microelectrode was still within the STN. Further advancement of the microelectrode was not done because the sufficient length of the STN has already been captured. For descriptions of markers see legend to Figure 4. Data from subject #8, left STN.