The Effect of 40-Hz Light Therapy on Amyloid Load in Patients with Prodromal and Clinical Alzheimer’s Disease

Figure 1

Mean PiB SUVR differences in five cortical regions. No significant difference in SUVR before and after light stimulation was seen (Prim = primary visual, Vis = visual association, Par = Parietal lobe, Cun = Cuneus, and Cing = posterior cingulate).