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Fig. 6. Lack of correlation between the directions of the first and second segments. The directions of the first and second segments with respect to the direction of F2 from the start and from the turn, respectively ({alpha} and ß in inset), are plotted against each other for successive blocks of 10 trials after the switch. (A) Paths 1–10: N=70, mean X=30.47±3.26°, mean Y=3.71±15.62°, direction of principal axis=92.08°. (B) Paths 11–20: N=102, mean X=26.47±3.435°, mean Y=–7.79±14.355°, direction of principal axis=89.98°. (C) Paths 21–30: N=86, mean X=25.38±2.78°, mean Y=–7.62±6.9°, direction of principal axis=80.23°. The closeness of the principal axis to 90° indicates a lack of correlation between the directions of the two segments.