TY - GEN
T1 - Anatomo-functional description of the brain
T2 - 2006 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2006
AU - Thyreau, Benjamin Guillaume Julien
AU - Thirion, Bertrand
AU - Flandin, Guillaume
AU - Poline, Jean Baptiste
PY - 2006/12/1
Y1 - 2006/12/1
N2 - The acquisition of brain images in fMRI yields rich topographic information about the functional structure of the brain. However, these descriptions are limited by strong inter-subject variability. A recent approach to represent the gross functional architecture across the population as seen in fMRI consists in automatically defining accross-subjects brain parcels. This technique yields large-scale inter-subject correspondences while allowing some spatial relaxation in the alignment of the brains. We address here the open question of an optimal parameterization (number of parcels) of brain parcellations using information theoretic criteria and cross-validation. Moreover, a finer analysis of variance components enables us to better characterize intra- and inter-subject variability sources in parcellation models.
AB - The acquisition of brain images in fMRI yields rich topographic information about the functional structure of the brain. However, these descriptions are limited by strong inter-subject variability. A recent approach to represent the gross functional architecture across the population as seen in fMRI consists in automatically defining accross-subjects brain parcels. This technique yields large-scale inter-subject correspondences while allowing some spatial relaxation in the alignment of the brains. We address here the open question of an optimal parameterization (number of parcels) of brain parcellations using information theoretic criteria and cross-validation. Moreover, a finer analysis of variance components enables us to better characterize intra- and inter-subject variability sources in parcellation models.
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M3 - Conference contribution
AN - SCOPUS:33847080974
SN - 142440469X
SN - 9781424404698
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
BT - 2006 IEEE International Conference on Acoustics, Speech, and Signal Processing - Proceedings
Y2 - 14 May 2006 through 19 May 2006
ER -