Figure 4
From: Long-term use of a neural prosthesis in progressive paralysis
Physiological and radiological examinations in patient #S3. (A) VEP findings pre-BCI and 6 months post-BCI. Flash visually evoked potentials (VEPs) were recorded. A reference electrode was placed on Fz, and a ground electrode was positioned on the earlobe. VEPs were observed before and after the BCI intervention. (B) SPECT findings pre-BCI and 6 months post-BCI. 99mTc-ethyl cysteinate dimer (ECD)-SPECT images were acquired. These images were transformed to a normalized brain (http://imaging.mrc-cbu.cam.ac.uk/imaging/MniTlairach) and were overlaid on a T2-weighted image of the patient. Note that an increased Z-score value at the left thalamus was found from pre-BCI to 6 months post-BCI (pre: − 1.0985, 6 months: − 0.7775).
