Referecnes

The SPICE and SPICE-NS implemented here is described in:

• Liu et al. Accessing the significance of brain maps associations through effective sample size estimation (in prep).

The idea of spatial detrending is described in:

• Liu et al. Spatial trends in brain maps: Evidence and recommendations (in prep).

Dutilleul’s derivation for effective sample size (SPICE and SPICE-NS):

• Dutilleul P, Clifford P, Richardson S, Hémon D. Modifying the t test for assessing the correlation between two spatial processes. Biometrics. 1993;49:305-314.

Nonstationary covariance function based on process convolution (SPICE-NS):

• Paciorek CJ, Schervish MJ. Spatial modelling using a new class of nonstationary covariance functions. Environmetrics. 2006;17(5):483-506.