Fig. 5.

Maintenance neuro-behavioral correlations. Lateral occipital responses during maintenance were significantly related to both accuracy (left, r₃₂ = 0.48, P = 0.005) and reaction time (right, r₃₂ = 0.36, P = 0.043). Greater alpha increases in this region during maintenance yielded worse accuracy, driven by the tightly controlled glycemic group (Fisher’s Z = 2.06, P = 0.039; tightly controlled A1c: r₁₅ = 0.79, P < 0.001, poorly controlled A1c: r₁₅ = 0.27, P = 0.295), and longer reaction times across both groups (Fisher’s Z = 0.84, P = 0.401). Left cerebellar dynamics and the relationship to reaction time mirrored the effects in the left lateral occipital cortex (r₃₂ = 0.42, P = 0.017) with a trend in the effect by group (Fisher’s Z = 1.77, P = 0.077). Dashed lines represent each group’s slope (light blue = tightly controlled; darker blue = poorly controlled), while the solid lines represent the overall (all subjects) slope of the relationship.