Dear Aser,
slice timing correction is performed through (sinc) interpolation in
time. Effectively, it corresponds to introduce a phase shift to the
signal in the Fourier domain, see the help text of spm_slice_timing.m.
It uses the translation property of the Fourier transform:
http://en.wikipedia.org/wiki/Fourier_transform#Basic_properties
Best regards,
Guillaume.
On 21/02/15 12:08, Aser A wrote:
> Hello all,
>
> How does SPM perform slice timing ?
>
> Is it by shifting the signals relative to the reference slice, how does
> this shifting is performed ?
>
> Kind regards,
>
> Aser
--
Guillaume Flandin, PhD
Wellcome Trust Centre for Neuroimaging
University College London
12 Queen Square
London WC1N 3BG
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