Related Experiment Video
Updated: Jan 29, 2026
08:43
Application of Granger Causality Analysis of the Directed Functional Connection in Alzheimer's Disease and Mild Cognitive Impairment
Published on: August 7, 2017
8.4K
Goal-Directed Processing of Naturalistic Stimuli Modulates Large-Scale Functional Connectivity
Zhenfu Wen1,2, Tianyou Yu1,2, Xinbin Yang3
1Center for Brain Computer Interfaces and Brain Information Processing, South China University of Technology, Guangzhou, China.
Frontiers in Neuroscience
|February 15, 2019
Summary
Top-down goals shape brain-wide functional connectivity (FC) during naturalistic tasks. A novel inter-subject functional correlation (ISFC) method effectively distinguished between behavioral and taxonomic judgments, highlighting goal-directed processing across large-scale brain networks.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Brain Imaging
Background:
- Human information processing is goal-directed, influencing neural activity and connectivity, particularly in frontal-parietal regions.
- Previous research on goal modulation of brain networks often uses simplified stimuli and controlled laboratory settings.
- Understanding goal-directed modulation under naturalistic conditions is crucial for ecological validity.
Purpose of the Study:
- To investigate how top-down goals modulate whole-brain functional connectivity (FC) during naturalistic tasks.
- To compare the effectiveness of a novel inter-subject functional correlation (ISFC) method against standard FC analysis for detecting task-induced network differences.
- To identify which brain networks contribute to classifying task goals under naturalistic conditions.
Main Methods:
- Utilized a functional magnetic resonance imaging (fMRI) dataset (ds000233) of 12 participants performing behavioral or taxonomic judgments on naturalistic animal videos.
- Applied a novel inter-subject functional correlation (ISFC) method to extract task-evoked FC patterns, enhancing signal-to-noise ratio for inter-regional correlations.
- Employed multivariate pattern analysis (MVPA) to predict task goals using ISFC and standard FC patterns.
Main Results:
- ISFC patterns successfully predicted participants' task goals, outperforming standard FC patterns.
- The ISFC method proved effective in revealing subtle network differences between distinct brain states.
- Both within-network and across-network ISFC measures significantly contributed to classifying task goals.
Conclusions:
- Goal-directed processing of naturalistic stimuli systematically modulates large-scale brain networks.
- The novel ISFC method is a powerful tool for exploring task-evoked functional connectivity and brain states.
- Neural modulation by goals extends beyond local activity, impacting global brain network organization.
Related Concept Videos
02:30Naturalistic Observations
17.1K
If you want to understand how behavior occurs, one of the best ways to gain information is to simply observe the behavior in its natural context. However, people might change their behavior in unexpected ways if they know they are being observed. How do researchers obtain accurate information when people tend to hide their natural behavior? As an example, imagine that your professor asks everyone in your class to raise their hand if they always wash their hands after using the restroom. Chances...
17.1K
01:17Functions of Connective Tissues
16.4K
Connective tissues perform a broad range of functions in the body. Their primary function is to connect and link different tissues in the body and act as packaging material between tissues. The areolar tissue, a connective tissue prototype, commonly cements various tissue types in diverse body organs. In contrast, adipose tissue cushions internal organs while insulating the body from heat loss.
Hard connective tissues, such as bones and cartilage, provide structure and support to the body.
Hard connective tissues, such as bones and cartilage, provide structure and support to the body.
16.4K
01:26Psychosis: Goals of Pharmacotherapy
516
Antipsychotic drugs are a crucial treatment method for acute and chronic psychoses, bipolar illness, and behavioral disorders. The selection of these drugs depends on several factors, including the state of the disease, clinical judgment, possible drug interactions, and the patient's sensitivity to adverse effects. In immediate scenarios, such as delirium and dementia, short-term treatment with low doses of high-potency typical or atypical agents can effectively manage symptom exacerbation.
516
02:41pH Scale
79.5K
Hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water (Kw). The concentrations of these ions in a solution are often critical determinants of the solution’s properties and the chemical behaviors of its other solutes. Two different solutions can differ in their hydronium or hydroxide ion concentrations by a million, billion, or even trillion times. A common means of...
79.5K
01:23Dietary Connections
61.7K
In biological systems, most metabolic pathways are interconnected. The cellular respiration processes that convert glucose to ATP—such as glycolysis, pyruvate oxidation, and the citric acid cycle—tie into those that break down other organic compounds. As a result, various foods—from apples to cheese to guacamole—end up as ATP. In addition to carbohydrates, food also contains proteins and lipids—such as cholesterol and fats. All of these organic compounds are used...
61.7K
01:26Scaling
593
In designing and analyzing filters, resonant circuits, or circuit analysis at large, working with standard element values like 1 ohm, 1 henry, or 1 farad can be convenient before scaling these values to more realistic figures. This approach is widely utilized by not employing realistic element values in numerous examples and problems; it simplifies mastering circuit analysis through convenient component values. The complexity of calculations is thereby reduced, with the understanding that...
593