help > Denoising Error
Apr 17, 2026  09:04 PM | Jeff Browndyke
Denoising Error

I keep on running into a reproducible issue with the new CONN version (25.b) using MATLAB 2025.  It crops up when I try to rerun denosing procedures or applying denoising to new ROIs.  

Any ideas on what might be happening?  Essentially, once I see this error, I can no longer add ROIs to a CONN study file.



Step 4/6: Denoising ROI data

Regression : White Matter (5P) (5 dimensions; no polynomial expansion; no temporal expansion; non-filtered; session-specific)
Regression : CSF (5P) (5 dimensions; no polynomial expansion; no temporal expansion; non-filtered; session-specific)
Regression : realignment (12P) (6 dimensions; no polynomial expansion; added first-order derivative; non-filtered; session-specific)

Regression : scrubbing (413P) (413 dimensions; no polynomial expansion; no temporal expansion; non-filtered; session-specific)
Regression : Effect of base (2P) (1 dimensions; no polynomial expansion; added first-order derivative; non-filtered; session-specific)
Regression : Effect of 9mos (2P) (1 dimensions; no polynomial expansion; added first-order derivative; non-filtered; session-specific)
Regression : Effect of 18mos (2P) (1 dimensions; no polynomial expansion; added first-order derivative; non-filtered; session-specific)
Order : Regression followed by filtering (RegBP)
Detrending : 1
Despiking : 0
Bandpass : [0.008 0.09]

ERROR DESCRIPTION:

Error using cellfun
Input #2 expected to be a cell array, was double instead.

Error in conn_process (line 2015)
enames=cellfun(@(nroi)arrayfun(@(n)sprintf('%s_%d',names{nroi},n),1:size(data{nroi},2),'uni',0),1:numel(data),'uni',0);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error in conn_process (line 69)
case {'preprocessing_gui','denoising_gui'}, conn_disp(['CONN: RUNNING DENOISING STEP']); conn_process([1.5,2,6:9],varargin{:});
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error in conn (line 7909)
conn_process('denoising_gui'); ispending=false;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error in conn_menumanager (line 125)
feval(CONN_MM.MENU{n0}.callback{n1}{1},CONN_MM.MENU{n0}.callback{n1}{2:end});
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
CONN25.b
SPM25 + DAiSS DEM FieldMap MEEGtools cat12
Matlab v.2025b
project: CONN25.b
storage: 2512.0Gb available

Threaded View

TitleAuthorDate
Denoising Error
Jeff Browndyke Apr 17, 2026
Yann Quide 3 hours ago