A. Schematics showing the division of individual test trials into respiratory-dependent groups. Individual test trials were divided into two groups according to the timing of cue exposure in individual test trials during the I phase and E phase, respectively (Cue I and Cue E). B, Bar graph showing the frequency of individual test trials (y-axis) between Non-phased (NP) and Phased sessions for the Cue I and Cue E groups. C,D. RT (C) and accuracy (D) (mean ± s.e.m.) were compared between the NP and Phased sessions for the Cue I and Cue E phase groups across individual subjects (Cue I-NP: n = 18, Cue I-Phased: n = 18, Cue E-NP: n = 18, Cue E-Phased: n = 18). E. Individual test trials were divided into those not containing the 360° point of the respiratory phase (under 360°, U360) and those containing the 360° point (over 360°, O360). F. Bar graphs showing the frequency of test trials (y-axis) in the U360 and O360 groups between the NP and Phased sessions. G,H. RT (G) and accuracy (H) (mean ± s.e.m.) were compared between the NP and Phased sessions for the U360 and O360 groups across individual subjects (U360-NP: n = 18, U360-Phased: n = 18, O360-NP: n = 18, O360-Phased: n = 17). I. Individual test trials were divided according to whether they did not (under 180°, U180) or did contain the 180° point (over 180°, O180). J. Bar graphs showing the frequency of test trials (y-axis) between the NP and Phased sessions in the U180 and O180 groups. K,L. RT (K) and accuracy (L) (mean ± s.e.m.) were compared between the NP and Phased sessions in the U180 and O180 groups across individual subjects (U180-NP: n = 18, U180-Phased: n = 18, O180-NP: n = 18, O180-Phased: n = 18). ¶ p< 0.05 and ¶¶¶ p< 0.005 indicate the significant main effect of session (NP vs. Phased) by two-way repeated-measures ANOVA. † p < 0.05 and ††† p < 0.005 indicate the significant main effect of transition (U360 vs. O360 or U180 vs. O180). *** p < 0.005 compared to relevant groups.