Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

A Comparative Effectiveness Study of Bipolar and Linked Quadripolar Techniques for Eliciting Transcranial Motor Evoked Potentials.

The Neurodiagnostic journal·2026

Same author

From Attention Control to Stimulus Selection: Neural Mechanisms Revealed by Multivariate Pattern and Functional Connectivity Analyses.

bioRxiv : the preprint server for biology·2026

Same author

Randomized Phase I/II Clinical Trial of a Melanoma Helper Peptide Vaccine with or without Systemic Agonistic Anti-CD27 Antibody (Varlilumab).

Cancer research communications·2026

Same author

Phase I/II clinical trial of a melanoma vaccine targeting shared non-mutated antigens and a shared mutated BRAF neoantigen with an agonistic CD40 antibody (CDX-1140) plus TLR3 agonist (poly-ICLC).

Journal for immunotherapy of cancer·2026

Same author

Rhythmic sampling and competition of target and distractor representations in visual sensory memory.

Cerebral cortex (New York, N.Y. : 1991)·2026

Same author

Management of direct oral anticoagulants in percutaneous coronary and structural interventions.

Kardiologia polska·2026

Same journal

Brain Aging in Specific Phobia: An ENIGMA-Anxiety Mega-Analysis.

Human brain mapping·2026

Same journal

Talking to the Brain: Using Large Language Models as Proxies to Model Brain Semantic Features.

Human brain mapping·2026

Same journal

Emotional Context Modulates the Response to Somatosensory Stimuli Within 20 milliseconds.

Human brain mapping·2026

Same journal

GABAergic Modulation of Brain Function During Prosaccade and Antisaccade Eye Movements: Evidence From Ultra-High-Field fMRI.

Human brain mapping·2026

Same journal

Injury Severity Influences Long-Term Cognitive Control in Pediatric "Mild" Traumatic Brain Injury.

Human brain mapping·2026

Same journal

Early Adulthood Signatures of Motherhood in Brain Aging.

Human brain mapping·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 29, 2026

Application of Granger Causality Analysis of the Directed Functional Connection in Alzheimer's Disease and Mild Cognitive Impairment

Application of Granger Causality Analysis of the Directed Functional Connection in Alzheimer's Disease and Mild Cognitive Impairment

Published on: August 7, 2017

Analyzing brain networks with PCA and conditional Granger causality.

Zhenyu Zhou¹, Yonghong Chen, Mingzhou Ding

¹Key Laboratory of Child Development and Learning Science, Southeast University, Ministry of Education, Nanjing, People's Republic of China.

Human Brain Mapping

|October 3, 2008

Summary

This summary is machine-generated.

This study introduces a novel algorithm for brain connectivity analysis. It enhances accuracy and reduces computational cost in identifying direct neural influences, improving our understanding of brain networks.

More Related Videos

New Framework for Understanding Cross-Brain Coherence in Functional Near-Infrared Spectroscopy (fNIRS) Hyperscanning Studies

New Framework for Understanding Cross-Brain Coherence in Functional Near-Infrared Spectroscopy (fNIRS) Hyperscanning Studies

Published on: October 6, 2023

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data

Published on: June 26, 2013

Related Experiment Videos

Last Updated: Jun 29, 2026

Application of Granger Causality Analysis of the Directed Functional Connection in Alzheimer's Disease and Mild Cognitive Impairment

Application of Granger Causality Analysis of the Directed Functional Connection in Alzheimer's Disease and Mild Cognitive Impairment

Published on: August 7, 2017

New Framework for Understanding Cross-Brain Coherence in Functional Near-Infrared Spectroscopy (fNIRS) Hyperscanning Studies

New Framework for Understanding Cross-Brain Coherence in Functional Near-Infrared Spectroscopy (fNIRS) Hyperscanning Studies

Published on: October 6, 2023

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data

Published on: June 26, 2013

Area of Science:

Neuroscience
Computational Neuroscience
Brain Imaging Analysis

Background:

Understanding directional influences in neural circuits is crucial for deciphering brain computations.
Granger causality mapping (GCM) is used but faces computational expense and limitations in distinguishing direct from indirect connectivity.

Purpose of the Study:

To develop a new algorithm, PCA-based conditional GCM, to address the limitations of traditional GCM.
To improve accuracy and computational efficiency in identifying direct causal influences in brain networks.

Main Methods:

Implemented dimensionality reduction using Principal Component Analysis (PCA) on regions of interest (ROIs).
Applied conditional Granger causality to estimate direct causal influences within local brain networks.

Main Results:

The proposed PCA-based conditional GCM demonstrated higher accuracy in detecting network connectivity compared to pairwise GCM.
Significant reduction in computational cost was achieved by using PCA components instead of individual voxel time series.

Conclusions:

PCA-based conditional GCM offers a more accurate and computationally efficient method for analyzing brain connectivity.
This advancement aids in understanding the direct causal influences within complex neural circuits.