Self-reports
TAS scores were significantly higher (F (1, 25) = 5.547, p= .027, η2 = .188, α = .618) in highs (mean +sd; 22.82 + 7.86) than in lows (14.20 + 7.16). The experience of change (∆) in the state of consciousness was significantly more intense (F (1, 25) = 67.27, p = .0001, η2= .714, α = 1.00) in highs (∆: 6.90 + 1.17) than in lows (∆:1.57 + 2.21).The last night sleep satisfaction was not different between highs (mean + sd; 7.34 + 1.35) and lows (7.03 + 2.15).
ECG
None of the variables exhibited significant Group and Condition effects and interactions. RR and LF/HF mean values are illustrated in Fig 1a, b. The SD mean value was 0.52 + 0.05 (mean + SD) sec, the RMSSD mean value was 0.04 + 0.03 sec2.