eelbrain.xhemi
- eelbrain.xhemi(ndvar, mask=None, hemi='lh', parc=True)
Project data from both hemispheres to
hemi
of fsaverage_symProject data from both hemispheres to the same hemisphere for interhemisphere comparisons. The fsaverage_sym brain is a symmetric version of fsaverage to facilitate interhemisphere comparisons. It is included with FreeSurfer > 5.1 and can be obtained as described here. For statistical comparisons between hemispheres, use of the symmetric
fsaverage_sym
model is recommended to minimize bias 1.- Parameters
ndvar (NDVar) – NDVar with SourceSpace dimension.
mask (bool) – Remove sources in “unknown-” labels (default is True unless
ndvar
contains sources with “unknown-” label).hemi ('lh' | 'rh') – Hemisphere onto which to morph the data.
parc (bool | str) – Parcellation for target source space; True to use same as in
ndvar
(default).
- Returns
lh (NDVAr) – Data from the left hemisphere on
hemi
offsaverage_sym
.rh (NDVar) – Data from the right hemisphere on
hemi
offsaverage_sym
.
See also
morph_source_space
lower level function for morphing
Notes
Only symmetric volume source spaces are currently supported.
References
- 1
Greve D. N., Van der Haegen L., Cai Q., Stufflebeam S., Sabuncu M. R., Fischl B., Brysbaert M. A Surface-based Analysis of Language Lateralization and Cortical Asymmetry. Journal of Cognitive Neuroscience 25(9), 1477-1492, 2013.