Scripts and Stimuli 

In the MAP Lab, we write scripts in MATLAB (The MathWorks, Natick, MA). The scripts posted below were written by and are the property of Scott D. Slotnick (and Haley A. Fritch or Lauren R. Moo, as specified). They are not to be used for financial gain, but rather are for open use by the fMRI and ERP community (use them at your own risk). If you find a bug, e-mail sd.slotnick@bc.edu. Type 'help script_name' (without the single quotes or .m) on the MATLAB command line to display basic script functionality and format.

Stimulus materials are also included on this page (see below). These stimuli were constructed by Scott D. Slotnick and the associated manuscript should be referenced if they are used for publication.

fMRI Scripts

Cluster extent thresholding, to correct for multiples comparisons. cluster_threshold_beta.m Modified 02/08/24.

If you download this script, e-mail sd.slotnick@bc.edu with subject line 'cluster_threshold_beta mailing list' to receive updates (your e–address will never be shared) (See Slotnick, 2017, for defense of this method and other methods to correct for multiple comparisons)

Spatial autocorrelation estimation which can be entered into cluster_threshold_beta. img_xcorr.m Modified 12/26/20. (To use this function, you must first install, download, unzip, and set path to Piotr's Computer Vision Matlab Toolbox)

SPM motion regressors (appends 1st derivative, 2nd derivative, and binary framewise displacment > .5 mm to 'rp' file). SPM_motion_regs.m Modified 1/28/24. Written by D. Spets & S. Slotnick.

Run concatenation. concat_runs.m Modified 7/30/20. Written by S. Slotnick & H. Fritch.

NIfTI to analyze format conversion. nii2img.m Modified 2/21/18. (To use this function, you must first install, download, unzip, and set path to Tools for NIfTI and ANALYZE image by Jimmy Shen)

DICOM to analyze format conversion. dcm2img.m Modified 8/6/06.

Region of interest (ROI) identification. img_ROI_identify.m Modified 1/10/18.

MNI to Talairach coordinate conversion (for SPM results). mni2tal.m Modified 12/14/03.

Talairach to MNI coordinate conversion (for ROI analysis). tal2mni.m Modified 1/8/05. Written by L. Moo.

Signal Detection Parameter Computation Script

Compute d' (d prime, strength) and C (bias) for a given hit rate and false alarm rate. d_C.m Modified 12/17/23

RP Script

E–Prime InLine code that sends a trigger to the parallel port at event onset. trigger_onset.txt Modified 1/10/10.

Stimuli

Abstract shapes designed to limit verbal processing. There are 6 lists of 48 shapes (1–48, 51–98, 101–148, 151–198, 201–248, 251–298), where the prototype shape is labeled E0, the studied exemplars are labeled E1–E9, and the nonstudied exemplar is labeled E10. For a detailed description, see Slotnick and Schacter (2004) and the Supplement. Slotnick & Schacter (2004) Abstract Shapes.zip (for prototypes without internal lines, download Slotnick & Schacter (2004) Abstract Shapes (no internal lines).zip).