makeSingleTrialEvents: Estimate single-trial fMRI activity.

In arf3DS4: Activated Region Fitting, fMRI data analysis (3D).

Description

makeSingleTrialEvents calculates single-trial fMRI activity using a double gamma HRF.

Usage

makeSingleTrialEvents(subject, condition, sefilename='single_events', 
 hrf.control=list(a1=6,a2=12,b1=0.9,b2=0.9,ce=0.35), experiment=NULL)

Arguments

subject	Name of the subject.
condition	Name of the condition.
sefilename	Filename of the volume where the single-trial data is stored (stores a 4D file with a volume for each event).
hrf.control	A list containing the parameters for the double gamma HRF.
experiment	An optional object of class experiment.

Details

Files are saved in the data/functional directory using the filename specified in sefilename. The function also returns the single-trial data.

Value

Returns a 4D nifti file (of class fmri.data) containing the single-trial data.

Warnings

Before makeSingleTrialEvents can be executed, the data of each run within a condition must be linked to the raw time-series. This is done via object of class functional by calling setFuncTimings.

Author(s)

Wouter D. Weeda - [e-mail]

See Also

model, fmri.data, experiment, functional, setFuncTimings

arf3DS4 documentation built on May 2, 2019, 5:16 p.m.