Attenuation of typical sex differences in the time-resolved functional connectivity of the fusiform gyrus in autism
Paper
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The authors' code
MATLAB · 42 lines · 1.1 KB · Apache-2.0
- function [dis_final] = mCAP_CAP_CompareSeeds(seed1,seed2)
- seed1=double(seed1);
- seed2=double(seed2);
- % Cosine distance between seeds
- DIS = pdist2(seed1',seed2','cosine');
- n_voxels = sum(sum(seed1));
- % Matching pairs
- IDX = munkres(DIS);
- idxk = 1;
- for k=1:size(DIS,1)
- if sum(IDX(k,:)) == 1
- dis_final(idxk) = DIS(k,IDX(k,:));
- idxk = idxk + 1;
- else
- end
- end
- dis_final = dis_final;%/n_voxels;
- %% check all the points
- end
- % Copyright 2023 Farnaz Delavari
- %
- % Licensed under the Apache License, Version 2.0 (the "License");
- % you may not use this file except in compliance with the License.
- % You may obtain a copy of the License at
- %
- % http://www.apache.org/licenses/LICENSE-2.0
- %
- % Unless required by applicable law or agreed to in writing, software
- % distributed under the License is distributed on an "AS IS" BASIS,
- % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- % See the License for the specific language governing permissions and
- % limitations under the License.
mCAP_CAP_CompareSeeds.m at commit 643a24b, under Apache-2.0 · at the source
Overview
- University of Zurich
- University of Geneva
- École Polytechnique Fédérale de Lausanne
- Institute of Psychiatry, Psychology, and Neuroscience, King’s College London
- Goethe University Frankfurt
- Central Institute of Mental Health, Mannheim
- University of Cambridge
- Institut Pasteur, Human Genetics and Cognitive Functions Unit
- King’s College London
- Radboud University Medical Center
- Donders Institute - Radboud University
- Ecole polytechnique fédérale de Lausanne
Abstract
Autism is characterized by social-communicative difficulties, with sex differences in symptom presentation. Social functioning is inherently dynamic, however, many neuroimaging studies rely on static, time-averaged approaches that obscure time-varying network interactions, potentially limiting our ability to capture the dynamic processes underlying social cognition. The fusiform gyrus (FFG), central to face and social perception, shows differences in functional connectivity in autism, yet is rarely examined dynamically or as a spatially heterogeneous structure. Here, we investigate the dynamic functional connectivity of FFG subregions in terms of their large-scale network configurations as a function of diagnosis and sex. We applied micro co-activation patterns analysis (µCAPs) to resting-state fMRI data from 286 autistic individuals (208:78 males:females) and 228 non-autistic individuals (146:82 males:females), aged 6–30 years, from the EU-AIMS LEAP dataset. µCAPs were identified using k-means clustering with FFG as the seed, and connectopic mapping positioned each µCAP along the principal connectivity gradient. We quantified µCAPs occurrence and further examined dwell time, transition probabilities, and spatial extent, along with associations with social functioning. Six µCAPs mapped onto distinct FFG subregions along a posterior-anterior axis. A significant sex-by-diagnosis interaction emerged for a default mode network (DMN)-related µCAP. Non-autistic females exhibited significantly more frequent occurrences, longer dwell times and distinct transition dynamics compared to males, while no sex difference was observed in autism. The spatial extent of this µCAP showed a reversal of typical sex effects. Autism is associated with an attenuation and reversal of typical sex differences in the functional configuration and spatial extent of FFG-DMN coupling, indicating that neural signatures of social-cognitive functions are sex-specific and dynamic. These findings suggest that sex is a neurobiologically meaningful dimension of heterogeneity in autism, expressed in dynamic network organization.
Reproduced under the paper's license (CC BY), from the paper cited above.
Repository
Its files are read in the Code ↔ Paper reader above.
MIPLabCH/mCAP
643a24b4cabcb0b410126f4d11fcea71202086ca, 23 November 2024Availability: 1 check, the latest on 27 September 2026: the link answers
- 27 September 2026: the link answers
12 files
- functions/
mCAP_CAP_CompareSeeds.m , MATLAB, 42 lines - functions/
mCAP_findbestK_standalon , MATLAB, 259 linese.m - functions/
mCAP_method2_findbestk_k , MATLAB, 296 linesmeans.m - functions/
mCAP_tframe_m.m , MATLAB, 38 lines - functions/
mCAP_w_CAP_get_seed_trac , MATLAB, 54 lineses.m - functions/
mCAP_w_find_activity.m , MATLAB, 140 lines - mCAP_initialize.m, MATLAB, 67 lines
- mCAP_inputs.m, MATLAB, 60 lines
- mCAP_main.m, MATLAB, 112 lines
- mCAP_run.m, MATLAB, 29 lines
- LICENSE, License, 201 lines
- README.md, Text, 31 lines
Tracing map
Proposed by the machine: these links were found in the paper and verified at the source, without human review. The map will receive a Zenodo DOI once one of the paper's authors has validated it with their ORCID.
What the map holds:
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- 10 scripts, each with its path and the digest of its content;
- no match between paragraphs and code yet;
- neither the text of the paper nor the code itself.
Its JSON (tracing-map.json) is deposited on Zenodo with its DOI once the map is validated.
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Versions
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Version 1, 27 September 2026: the first record
Recorded: type, journal, dates, 19 authors, 2 funders, 99 references.
Cite
This paper
Floris, D., Saccaro, L., Delavari, F., Strzelczyk, D., Vieira, B. H., Elleaume, C., Pretzsch, C., Ecker, C., Banaschewski, T., Holt, R., Baron-Cohen, S., Bourgeron, T., Charman, T., Loth, E., Murphy, D., Buitelaar, J., Beckmann, C., Van De Ville, D., & Langer, N. (2026). Attenuation of typical sex differences in the time-resolved functional connectivity of the fusiform gyrus in autism. Research Square (preprint). https://
BibTeX
@article{floris2026atten
author = {Floris, Dorothea and Saccaro, Luigi and Delavari, Farnaz and Strzelczyk, Dawid and Vieira, Bruno Hebling and Elleaume, Camille and Pretzsch, Charlotte and Ecker, Christine and Banaschewski, Tobias and Holt, Rosemary and Baron-Cohen, Simon and Bourgeron, Thomas and Charman, Tony and Loth, Eva and Murphy, Declan and Buitelaar, Jan and Beckmann, Christian and Van De Ville, Dimitri and Langer, Nicolas},
title = {{Attenuation of typical sex differences in the time-resolved functional connectivity of the fusiform gyrus in autism}},
journal = {Research Square (preprint)},
year = {2026},
month = jul,
publisher = {Research Square},
issn = {2693-5015},
doi = {10.21203/
url = {https://
}
RIS
TY - JOUR
AU - Floris, Dorothea
AU - Saccaro, Luigi
AU - Delavari, Farnaz
AU - Strzelczyk, Dawid
AU - Vieira, Bruno Hebling
AU - Elleaume, Camille
AU - Pretzsch, Charlotte
AU - Ecker, Christine
AU - Banaschewski, Tobias
AU - Holt, Rosemary
AU - Baron-Cohen, Simon
AU - Bourgeron, Thomas
AU - Charman, Tony
AU - Loth, Eva
AU - Murphy, Declan
AU - Buitelaar, Jan
AU - Beckmann, Christian
AU - Van De Ville, Dimitri
AU - Langer, Nicolas
TI - Attenuation of typical sex differences in the time-resolved functional connectivity of the fusiform gyrus in autism
T2 - Research Square (preprint)
J2 - Res Sq
PY - 2026
DA - 2026/
SN - 2693-5015
PB - Research Square
DO - 10.21203/
UR - https://
ER -
CSL-JSON
{
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