Fig. 3.

Differences in working memory neural oscillatory responses by glycemic control level. (Top) Those with tightly controlled glycemic levels (A1c < 7.0%) showed stronger alpha/low-beta decreases during encoding in left temporal regions, while those with poor glycemic control exhibited weaker alpha/low-beta increases in the left inferior frontal and right precentral regions. (Bottom) Participants with poorer glycemic control (A1c > 7.0%) had greater alpha increases in left lateral occipital and cerebellum and had greater alpha decreases in right temporal regions during the maintenance period. However, those with tightly controlled glycemic levels had greater alpha activity in right occipital regions in maintenance. Data are thresholded P < 0.05 to P < 0.005.