Related Experiment Video
Updated: Feb 5, 2026
05:55
Modeling the Functional Network for Spatial Navigation in the Human Brain
Published on: October 13, 2023
1.6K
Spatial Directionality Found in Frontal-Parietal Attentional Networks.
Gahangir Hossain1, Mark H Myers2, Robert Kozma3
1Electrical Engineering and Computer Science, Texas A&M University-Kingsville, Kingsville, TX, USA.
Neuroscience Journal
|September 20, 2018
Summary
Neural oscillations, specifically alpha-beta phase coupling, carry perceptual information across the cortex. This brain activity is key for cognitive processing and attentional mechanisms during tasks.
Area of Science:
- Neurophysiology
- Cognitive Neuroscience
- Brain Dynamics
Background:
- Previous neurophysiology research explored cortical electrical activity during cognition.
- The frequency and direction of episodic synchronization in higher cognitive functions remain unclear.
- Investigating neural oscillations for perceptual information in spatial patterns is crucial.
Purpose of the Study:
- To determine if neural oscillations carry perceptual information as spatial patterns across the cortex.
- To analyze scalp electroencephalography (EEG) in humans during visual sensory stimulation.
- To understand the role of alpha and beta rhythms in cognitive processing.
Main Methods:
- Analyzed magnitude squared coherence of neural activity during "finger movement with Eyes Open (EO) or Eyes Wandering (EW)" tasks.
- Identified coherence patterns in alpha (8-12 Hz) and beta (12-16 Hz) frequency ranges.
- Utilized spatial network organization to classify EEG epochs based on stimuli class.
Main Results:
- Coherence showed the smallest standard deviation and variations among electrode combinations during task states.
- Highest coherence was observed between alpha and beta frequency ranges.
- Spatial network organization successfully classified EEG epochs related to stimuli.
Conclusions:
- Cortical neural signaling employs alpha-beta phase coupling during cognitive processing.
- Alpha rhythms appear regulated during focused tasks, while beta activity integrates external stimuli.
- Findings reveal frontoparietal attentional mechanisms in brain state shifts, offering insights into global cerebral dynamics and resource allocation.
More Related Videos
Related Concept Videos
02:26Protein Networks
4.6K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
4.6K
02:26Protein Networks
2.9K
2.9K
02:18Network Covalent Solids
16.2K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
16.2K
01:30Attention-Deficit/Hyperactivity Disorder
991
Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
991
01:09Directing Effect of Substituents: meta-Directing Groups
6.0K
Substituents on the benzene ring that direct an incoming electrophile to undergo substitution at the meta position are called meta directors. All meta directors either have a positive charge on the atom directly bonded to the ring or a partial positive charge. These groups function by withdrawing electrons from the ring through inductive and resonance effects. Consider the carbocation intermediates formed upon the addition of an electrophile on nitrobenzene at the...
6.0K
01:15Depth Perception and Spatial Vision
2.0K
Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
2.0K