blockStimulus: Block stimulus model for FMRI Data

In stnava/ANTsR: ANTs in R: Quantification Tools for Biomedical Images

Block stimulus model for FMRI Data

Description

Create the block BOLD stimulus for a given task indicator function. Current units in terms of volumes. Sort of a bug, should be in TR.

Usage

blockStimulus(scans = 1, onsets = c(1), durations = c(1), rt = 3)

Arguments

scans	number of scans
onsets	vector of onset times (in scans)
durations	vector of duration of ON stimulus in scans or seconds (if !is.null(times))
rt	time between scans in seconds (TR)

Details

None

Value

Vector with dimension c(scans, 1).

Author(s)

b avants [e-mail]

References

Worsley, K.J., Liao, C., Aston, J., Petre, V., Duncan, G.H., Morales, F., Evans, A.C. (2002). A general statistical analysis for fMRI data. NeuroImage, 15:1-15.

Examples

# Example 1
hrf <- blockStimulus(107, c(18, 48, 78), 15, 2)

stnava/ANTsR documentation built on April 16, 2024, 12:17 a.m.