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. Author manuscript; available in PMC: 2010 Apr 4.
Published in final edited form as: Neurosurg Focus. 2009 Jul;27(1):E6. doi: 10.3171/2009.4.FOCUS0986

Fig. 4.

Fig. 4

Computed tomography scan showing the implanted depth electrodes. Depth electrodes similar to ones that would be appropriate for use in an LGN-based visual prosthesis are already in clinical use during preparation for surgical treatment of epilepsy such as shown in this image obtained in a patient with bilaterally implanted hippocampus. Left inset: A depth electrode that combines traditional cuff-style contacts with a central bundle of microwires exiting distally. Right inset: A traditional depth electrode without the central bundle.