Linear and non linear measures of pupil size as a function of hypnotizability

Figures

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  Figure 1. Autonomic variables (mean, SEM). (a) Mean RR (interbeat interval, sec; (b) Root Mean Square of Successive Differences (RMSSD, sec); (c) mean Tonic Skin Conductance (SC, arbitrary units). I1 and I6: first and last Interval. Stars indicate significant differences between Intervals independently from hypnotizability for RR and SC (a: I1 < I6; c: I1 > I6) and (b) between Intervals in highs and mediums for RMSSD. Lines (b) indicate significant hypnotizability differences in I1.

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  Figure 2. Pupil diameter features (mean, SEM). (a) median diameter; (b) MAD, the median value of the absolute deviations from the median value; (c) BMF, median band frequency; (d) TBP, band total power. Lines indicate significant Interval effects for MAD and the MBF independently from hypnotizability. (e, f): mean pupil size and SD.

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  Figure 3. Changes (ΔI6-I1) in the pupil spectrum Band Median Frequency. BMF (Mean, SEM). Lines indicate significant differences between mediums and highs/lows.

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  Figure 4. Determinism and Entropy of the pupil signal Recurrence Plot. (a) Determinism and (b), Entropy in I1 and I6. The dotted line indicates differences approaching significance (p = .029 with the level of significance set at p = 0.025 after Bonferroni correction).

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  Figure 5. Processing of the pupil signal. In the first graph, thresholds are in red; in the second graph signal after threshold is in orange; in the third graph averaged mean filtered signal is in red; in all graphs raw signal is in blue.