Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Quadric Surfaces01:28

Quadric Surfaces

Quadric surfaces are three-dimensional surfaces characterized by second-degree equations in the variables x, y, and z. These surfaces are smooth and continuous, and specific combinations of squared and linear terms define their shapes. The main types of quadric surfaces include ellipsoids, cones, paraboloids, and hyperboloids. Each type exhibits distinct geometric features depending on how the variables are arranged and related within the equation.Ellipsoids are closed surfaces formed when all...
Tangent Planes to a Parametric Surface01:22

Tangent Planes to a Parametric Surface

A tangent plane provides a linear approximation to a curved surface at a specific point, capturing the local behavior of the surface. It can be understood as the plane that just touches the surface at that point and is defined by the tangent directions of curves lying on the surface. These tangent directions arise naturally when the surface is described parametrically, allowing systematic construction of the plane.For a surface expressed in parametric form, the position of any point is...
Polar Curves01:19

Polar Curves

The spirograph is a versatile tool for visualizing the relationship between geometry and mathematical representation. In particular, it demonstrates how polar coordinates offer an alternative framework for describing curves in comparison to Cartesian coordinates. Instead of specifying a point by its horizontal and vertical displacements (x, y), polar coordinates use a radius r, the distance from the origin, and an angle θ, measured counterclockwise from the polar axis. This system is...
Surface Area Calculations01:22

Surface Area Calculations

Surface area calculations for a graph z = f(x, y) are fundamental in engineering applications involving curved structures such as satellite dishes. A parabolic dish reflects communication signals efficiently, but engineers must determine its exact curved surface area to estimate coating materials, fabrication costs, and structural requirements. Since the rim of the dish forms a circular boundary, the surface area is calculated over a circular domain in the xy-plane.Parametric Representation of...
Tangent Planes to Surfaces01:19

Tangent Planes to Surfaces

In multivariable calculus, the concept of a tangent plane plays a central role in approximating curved surfaces. When dealing with a surface defined by a function of two variables, such as z = f(x, y), the tangent plane at a given point provides the best linear approximation to the surface near that point. This local linearization allows complex, nonlinear geometries to be treated using simpler, planar models.The construction of the tangent plane involves taking vertical slices of the surface...
Gauss's Law: Planar Symmetry01:27

Gauss's Law: Planar Symmetry

A planar symmetry of charge density is obtained when charges are uniformly spread over a large flat surface. In planar symmetry, all points in a plane parallel to the plane of charge are identical with respect to the charges. Suppose the plane of the charge distribution is the xy-plane, and the electric field at a space point P with coordinates (x, y, z) is to be determined. Since the charge density is the same at all (x, y) - coordinates in the z = 0 plane, by symmetry, the electric field at P...

You might also read

Related Articles

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

Sort by
Same author

Time to Publication of Clinical Trials Funded by the National Institute of Neurological Disorders and Stroke.

Annals of neurology·2021
Same author

Seeking progress in disease modification in Parkinson disease.

Parkinsonism & related disorders·2021
Same author

Minimal functional brain differences between older adults with and without mild cognitive impairment during the stroop.

Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition·2013
Same author

DICCCOL: dense individualized and common connectivity-based cortical landmarks.

Cerebral cortex (New York, N.Y. : 1991)·2012
Same author

Visual analytics of brain networks.

NeuroImage·2012
Same author

Axonal fiber terminations concentrate on gyri.

Cerebral cortex (New York, N.Y. : 1991)·2011
Same journal

Segmentation of the parasagittal dura mater on multi-center 3D-FLAIR MRI.

NeuroImage·2026
Same journal

Spatial frequency channels implement a mental ruler in spatial vision.

NeuroImage·2026
Same journal

Exploring the Link Between Intravoxel Incoherent Motion Measured Brain Diffusivity During Wakefulness and Sleep Macrostructure in the Elderly.

NeuroImage·2026
Same journal

Closed-loop adaptation of transcranial magnetic stimulation intensity with electroencephalography feedback.

NeuroImage·2026
Same journal

Volumetric postmortem MRI of the medial temporal lobe in Alzheimer's disease and related disorders: methodological advances and implications for in vivo biomarker development.

NeuroImage·2026
Same journal

Neural responses to equity and inequity when receiving vicarious rewards for self and charity during adolescence.

NeuroImage·2026
See all related articles

Related Experiment Video

Updated: Jun 13, 2026

How to Measure Cortical Folding from MR Images: a Step-by-Step Tutorial to Compute Local Gyrification Index
09:57

How to Measure Cortical Folding from MR Images: a Step-by-Step Tutorial to Compute Local Gyrification Index

Published on: January 2, 2012

Gyral folding pattern analysis via surface profiling.

Kaiming Li1, Lei Guo, Gang Li

  • 1School of Automation, Northwestern Polytechnical University, Xi'an, China.

Neuroimage
|May 18, 2010
PubMed
Summary
This summary is machine-generated.

This study introduces a novel cortical surface profiling method to analyze human cerebral cortex folding patterns. The technique accurately classifies gyri into distinct hinge patterns, showing potential for clinical applications in brain disorders.

More Related Videos

Determination of Aggregate Surface Morphology at the Interfacial Transition Zone (ITZ)
08:59

Determination of Aggregate Surface Morphology at the Interfacial Transition Zone (ITZ)

Published on: December 16, 2019

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
11:47

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Published on: February 27, 2013

Related Experiment Videos

Last Updated: Jun 13, 2026

How to Measure Cortical Folding from MR Images: a Step-by-Step Tutorial to Compute Local Gyrification Index
09:57

How to Measure Cortical Folding from MR Images: a Step-by-Step Tutorial to Compute Local Gyrification Index

Published on: January 2, 2012

Determination of Aggregate Surface Morphology at the Interfacial Transition Zone (ITZ)
08:59

Determination of Aggregate Surface Morphology at the Interfacial Transition Zone (ITZ)

Published on: December 16, 2019

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
11:47

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Published on: February 27, 2013

Area of Science:

  • Neuroscience
  • Computational Anatomy
  • Medical Imaging

Background:

  • Cortical folding patterns are crucial for human brain function.
  • Previous methods for analyzing cortical folding relied on local or global descriptors, limiting comprehensive analysis.
  • A need exists for detailed, gyrus-scale analysis of cortical folding patterns.

Purpose of the Study:

  • To develop and validate a novel gyrus-scale cortical folding pattern analysis technique.
  • To model cortical surface profiles using a power function for flexibility and compactness.
  • To classify gyri into distinct hinge patterns and investigate their distribution and relation to fiber density.

Main Methods:

  • Cortical surface sampling into 2D profiles and power function modeling.
  • Extraction of affine-invariant features and affinity propagation clustering for cortical parcellation.
  • Second-round surface profiling to detect the number of hinges for gyral pattern description.

Main Results:

  • The proposed method accurately classifies human gyri into 2-hinge, 3-hinge, and 4-hinge patterns.
  • Analysis revealed specific distributions of folding patterns across brain lobes.
  • The technique identified abnormalities in schizophrenia patients consistent with existing literature.

Conclusions:

  • Cortical surface profiling offers a robust method for analyzing gyrus-scale folding patterns.
  • The hinge pattern classification provides a detailed descriptor of cortical morphology.
  • This technique holds promise for understanding brain development, function, and neurological disorders like schizophrenia.