Strong associations were found between the three-way complex of odor concentrations, the individual ability to detect stimuli at different concentrations, and N1 and P2 measures obtained for different concentrations (Tab. 3). For controls, N1 sink pooled across lateral-temporal and frontocentral sites (cf. Fig. 6C, row 2) showed robust correlations over both hemispheres with odor concentration and odor detection sensitivity (dL), confirming that increases in odor intensity were accompanied by increases in behavioral performance and N1 sink amplitude. These associations were also significant for patients, but nevertheless weaker when compared to controls, as indicated by significant differences between correlations for each group over each hemisphere (odor concentration: left, z = −2.78, p = 0.003; right, z = −1.87, p = 0.03; odor detection: left, z = −3.01, p = 0.001; right, z = −2.42, p = 0.008). Likewise, P2 source pooled 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
