ANOVA 3. Effects of declination rotation and inclination direction on post-stimulus alpha-power | |||
---|---|---|---|

Two-way repeated measures ANOVA (N = 16) Declination rotation × inclination direction | F | p | η_{p}
^{2} |

Main effect of declination rotation (CCW vs CW vs FIXED) | 3.77 | 0.03* | 0.24 |

Main effect of inclination direction (Dn vs Up) | 0.89 | 0.36 | 0.06 |

Declination rotation × inclination direction (interaction) | 6.49 | 0.004*** | 0.30 |

ANOVA 3 shows a significant interaction of declination rotation and inclination direction in declination experiments designed to test the “quantum compass” mechanism of magnetoreception. A significant alpha-ERD difference (

*p*< 0.05) between counterclockwise down (DecDn.CCW.N) and counterclockwise up (DecUp.CCW.S) argues against this hypothesis in humans.*F*is the*F*-ratio statistic,*p*the probability value, and η_{p}^{2}the partial η^{2}value from the ANOVA.