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Logarithmic transformation for high-field BOLD fMRI data.

Abstract:

Parametric statistical analyses of BOLD fMRI data often assume that the data are normally distributed, the variance is independent of the mean, and the effects are additive. We evaluated the fulfilment of these conditions on BOLD fMRI data acquired at 4 T from the whole brain while 15 subjects fixated a spot, looked at a geometrical shape, and copied it using a joystick. We performed a detailed analysis of the data to assess (a) their frequency distribution (i.e. how close it was to a normal ...

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Publication status:
Published

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Publisher copy:
10.1007/s00221-005-2336-4

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Institution:
University of Oxford
Department:
Oxford, MSD, Psychiatry
Role:
Author
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Journal:
Experimental brain research
Volume:
165
Issue:
4
Pages:
447-453
Publication date:
2005-09-05
DOI:
EISSN:
1432-1106
ISSN:
0014-4819
URN:
uuid:25882b43-98e2-42d4-9875-f0731a8d3fe8
Source identifiers:
139554
Local pid:
pubs:139554

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