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. 2023 May 5;13(9):e4664. doi: 10.21769/BioProtoc.4664

Figure 3. Assembled gradient refractive index (GRIN) lens and EEG electrodes.

Figure 3.

A. Tools and materials for GRIN lens preparation. B. GRIN lens and anchoring wires. C. Attachment of anchoring wires to the GRIN lens. D. Assembled GRIN lens. E. Assembled EEG/EMG electrode, inset: diagram of channel configuration. The middle wire is used as the reference (ref) for EEG.