entropy-logo

Journal Browser

Journal Browser

Spatiotemporal Complexity Analysis of Brain Function

A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Complexity".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 3379

Special Issue Editors


E-Mail Website
Guest Editor
Institute of Neuroscience and Medicine (INM-7: Brain and Behaviour), Research Centre Juelich, 52428 Juelich, Germany
Interests: biomedical signal processing; applied machine learning; brain function and structure; signal complexity analysis; time–frequency analysis; brain connectivity analysis

E-Mail Website
Guest Editor
Department of Electrical and Computer Engineering, Sultan Qaboos University, Muscat, Oman
Interests: biomedical signal analysis and processing; nonstationary signal analysis; smart systems and control; applied artificial intelligence

E-Mail Website
Guest Editor
Department of Cognitive Science, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW 2109, Australia
Interests: biomedical signal processing; neuroimaging of brain networks; sparsity; time–frequency signal analysis; applied machine learning

Special Issue Information

Dear Colleagues,

The world we live in is a complex dynamical system that goes through numerous stable and unstable behaviors. One of the most obvious realizations of dynamical complexity can be found in the brain function as spontaneous changes in pattern irregularity in time and across multiple spatial scales. The biological mechanisms behind this spatiotemporal behavior and its mathematical properties are yet to be fully understood. To this end, different aspects of brain function, such as electrical activity, hemodynamics, glucose metabolism, and the diffusion of water molecules, can be investigated. 

This Special Issue is dedicated to new advances in (i) spatiotemporal analysis of brain complexity using neuroimaging data, (ii) realistic modelling of brain complexity, and (iii) the development of quantitative tools for the differentiation of brain complexity between health and disease. We invite original contributions and comprehensive reviews from complex dynamics, neuroscience, network science, signal processing, and information theory on these topics:

  • Biological and anatomical bases of complexity in brain function.
  • Analysis of brain complexity in time and space using neuroimaging modalities such as EEG, MEG, functional/anatomical/diffusion MRI, and PET.
  • Clinical applications of brain complexity analysis in brain abnormalities using machine learning techniques.
  • Replication studies of previous findings using independent and large populations are also encouraged.

Dr. Amir Omidvarnia
Dr. Mostefa Mesbah
Dr. Ghasem Azemi
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Entropy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • complex dynamics

  • spatiotemporal complexity
  • neuroimaging
  • brain structure and function
  • diagnosis and prognosis of brain diseases
  • brain connectivity analysis
  • time series analysis
  • network analysis
  • numerical algorithms
  • machine learning

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

22 pages, 5950 KiB  
Article
On the Spatial Distribution of Temporal Complexity in Resting State and Task Functional MRI
by Amir Omidvarnia, Raphaël Liégeois, Enrico Amico, Maria Giulia Preti, Andrew Zalesky and Dimitri Van De Ville
Entropy 2022, 24(8), 1148; https://0-doi-org.brum.beds.ac.uk/10.3390/e24081148 - 18 Aug 2022
Cited by 2 | Viewed by 2266
Abstract
Measuring the temporal complexity of functional MRI (fMRI) time series is one approach to assess how brain activity changes over time. In fact, hemodynamic response of the brain is known to exhibit critical behaviour at the edge between order and disorder. In this [...] Read more.
Measuring the temporal complexity of functional MRI (fMRI) time series is one approach to assess how brain activity changes over time. In fact, hemodynamic response of the brain is known to exhibit critical behaviour at the edge between order and disorder. In this study, we aimed to revisit the spatial distribution of temporal complexity in resting state and task fMRI of 100 unrelated subjects from the Human Connectome Project (HCP). First, we compared two common choices of complexity measures, i.e., Hurst exponent and multiscale entropy, and observed a high spatial similarity between them. Second, we considered four tasks in the HCP dataset (Language, Motor, Social, and Working Memory) and found high task-specific complexity, even when the task design was regressed out. For the significance thresholding of brain complexity maps, we used a statistical framework based on graph signal processing that incorporates the structural connectome to develop the null distributions of fMRI complexity. The results suggest that the frontoparietal, dorsal attention, visual, and default mode networks represent stronger complex behaviour than the rest of the brain, irrespective of the task engagement. In sum, the findings support the hypothesis of fMRI temporal complexity as a marker of cognition. Full article
(This article belongs to the Special Issue Spatiotemporal Complexity Analysis of Brain Function)
Show Figures

Figure 1

Back to TopTop