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SERIES C  
Applied Statistics

Tests for a difference in timing of physiological response between two brain regions measured by using functional magnetic resonance imaging, by S. Landau et al.
Journal of the Royal Statistical Society, Series C, Applied Statistics, Volume 53 (2003) part 1, 63-82

The dataset consists of 5 variables (columns) measured on each of 1567 voxels (rows) of a selected planar brain image slice in standard space (near-axial slice through dorsal cerebral cortex).

The variable values are as follows:

X
 position of voxel on horizontal axis
Y
 position of voxel on vertical axis
medFPQ
 median of three replicate fundamental power quotient (FPQ) values
at the voxel position
region
region to which voxel was assigned; with codes
1 = region of interest (ROI) 1 (anterior cingulate cortex region activated by experimental stimulus; contains 21 voxels)
2 = ROI 2 (lateral premotor cortex region activated by experimental stimulus; contains 24 voxels)
0 = base region (non-activated region; contains 1064 voxels)
NA = voxel not allocated
meanTheta
mean direction of three replicate phase-shift estimates at the voxel position

More information concerning the design and rationale of the fMRI experiment can be found in the paper.

Sabine Landau
Department of Biostatistics and Computing
Institute of Psychiatry (King's College)
De Crespigny Park
London SE5 8AF
UK

E-mail: s.landau@iop.kcl.ac.uk

Journals

SERIES A
Statistics in Society

SERIES B
Statistical Methodology

SERIES C
Applied Statistics

SERIES D
The Statistician