Table 3. Between-group comparisons in brain regions differentially activated for the simple main effects.
Anatomical region | BA | Voxels | Side | MNI coordinates |
Z score | ||
---|---|---|---|---|---|---|---|
x | y | z | |||||
Hostile type (gelotophobics > non-gelotophobics) | |||||||
Middle frontal gyrus (dlPFC) | 8 | 16 | L | −26 | 10 | 46 | 4.38 |
Non-hostile type (gelotophobics > non-gelotophobics) | |||||||
Caudate body (dorsal striatum) | − | 8 | L | −12 | 2 | 26 | 3.54 |
Hostile type (non-gelotophobics > gelotophobics) | |||||||
Insula | 13 | 14 | L | −36 | 18 | 10 | 3.42 |
Inferior frontal gyrus (vlPFC) | 45/47 | 13 | R | 34 | 26 | 10 | 3.32 |
Non-hostile type (non-gelotophobics > gelotophobics) | |||||||
Insula | 13 | 183 | R | 46 | 10 | 6 | 5.16 |
Medial frontal gyrus (vmPFC) | 10 | 59 | L | −6 | 60 | −2 | 4.10 |
Midbrain (substantia nigra) | — | 60 | R | 12 | −26 | −6 | 3.93 |
Anterior cingulate cortex (vACC) | 32/10 | 21 | L | −6 | 50 | 0 | 3.75 |
The activation threshold for the simple main effects was set at p < 0.05 FWE (family-wise error rate) for multiple comparisons using predefined ROIs for each type of joke. dlPFC = dorsolateral prefrontal cortex; vlPFC = ventrolateral PFC; vmPFC = ventromedial PFC; vACC = ventral anterior cingulate cortex.