Fig 4. The network small-worldness (S) of the theta-band phase locking value (TPLV) maps as a function of degree (K).

(a) The schizotypal trait and (b) control groups. Blue solid line: new word. Red dotted line: old word. Shaded area: standard error. Based on the dual-process model of recognition memory, we focused on networks during the two temporal intervals related to ‘familiarity’ and ‘recollection’ processing (i.e., the 250–550 and 550–750 ms intervals, respectively). Within each group, the S values for the old and new words were statistically compared at each K from 3 to 7. During the 250–550 ms period, both groups did not reveal that any S was significantly higher for the old words than for the new words at several degrees (Ks; between 3 and 5) only in the control group (▼: p<0.05 by paired-sample t-test). The optimal K was defined as 3.3, which showed the largest difference between the two types of words. However, the schizotypal trait group did not show a significant old/new effect in S at any K during the 550–750 ms period.