sampling_frame: Construct a sampling_frame

In bbuchsbaum/fmrireg: R package for the anlysis of fmri data

Construct a sampling_frame

Description

A sampling_frame describes the block structure and temporal sampling of an fMRI paradigm.

Usage

sampling_frame(blocklens, TR, start_time = TR/2, precision = 0.1)

Arguments

blocklens	A numeric vector representing the number of scans in each block.
TR	A numeric value or vector representing the repetition time in seconds (i.e., the spacing between consecutive image acquisitions).
start_time	A numeric value or vector representing the offset of the first scan of each block (default is TR/2).
precision	A numeric value representing the discrete sampling interval used for convolution with the hemodynamic response function (default is 0.1).

Value

A list with class "sampling_frame" describing the block structure and temporal sampling of an fMRI paradigm.

Examples

frame <- sampling_frame(blocklens = c(100, 100, 100), TR = 2, precision = 0.5)

# The relative time (with respect to the last block) in seconds of each sample/acquisition
sam <- samples(frame)
# The global time (with respect to the first block) of each sample/acquisition
gsam <- samples(frame, global = TRUE)

bbuchsbaum/fmrireg documentation built on May 16, 2023, 10:56 a.m.