across mid-frontocentral and mid-parietal sites (cf. Fig. 6C, row 4) showed positive correlations with odor concentration and odor detection, indicating that greater P2 was linked to greater odor intensity and better performance, although the association between odor detection and P2 source amplitude was insignificant in patients (r = 0.25, p = 0.13); however, these correlations did not differ between groups (both z ≤ 1.0 , both p ≥ 0.15). inally, both groups showed a strong association between odor concentration and odor detection, with increases in odor intensity yielding better performance, but this link was nevertheless marginally weaker in patients compared to controls (z = 1.48, p = 0.07).
