This functions enables the transformation of spmT-maps to correlation coefficient, effect-size, p-value, or log p-value. For the last case of log transformation this means that a p-value of p=0.99 (0.01) is transformed to a value of 2.

#### Example

p-value |
-log10(1-P) |

0.1 | 1 |

0.05 | 1.3 |

0.01 | 2 |

0.001 | 3 |

All maps can be thresholded using height and extent thresholds and you can also apply corrections for multiple comparisons based on family-wise error (FWE) or false discovery rate (FDR). You can easily threshold and/or transform a large number of spmT-maps using the same thresholds.

#### Naming convention of the transformed files

*Type_Contrast_Pheight_Pextent_K_Neg*

Type: |
P | p-value |

logP | log p-value | |

R | correlation coefficient | |

D | effect size | |

T | t-value | |

Contrast: |
name used in the contrast manager with replaced none valid strings | |

Pheight: |
p | uncorrected p-value in (p<0.05 will coded with “p5”) |

pFWE | p-value with FWE correction in % | |

pFDR | p-value with FDR correction in % | |

Pextent: |
p | uncorrected extent p-value in (p<0.05 will coded with “p5”) |

pkFWE | extent p-value with FWE correction in % | |

pFDR | p-value with FDR correction in % | |

K: |
extent threshold in voxels | |

Neg: |
image also shows thresholded inverse effects (e.g. neg. values) |

I recommend to use slice_overlay to overlay the resulting images.