wiki笔记--Association fiber--2021/9/8

Association fiber

From Wikipedia, the free encyclopedia

Jump to navigationJump to search

Association fiber

"Association Fibers" by TavorLab

 

 

Diagram showing principal systems of association fibers in the cerebrum.

 

Dissection of cerebral cortex and brainstemshowing association fibers and insular cortexafter removal of its superficial grey matter

Details

Identifiers

Latin

Fibrae associationis telencephali

TA98

A14.1.00.016
A14.1.09.553

TA2

5593

FMA

75241

Anatomical terms of neuroanatomy

[edit on Wikidata]

Association fibers are axons that connect cortical areas within the same cerebral hemisphere.[1]

In human neuroanatomy, axons (nerve fibers) within the brain, can be categorized on the basis of their course and connections as association fibers, projection fibers, and commissural fibers.[1]

The association fibers unite different parts of the same cerebral hemisphere, and are of two kinds: (1) short association fibers that connect adjacent gyri; 

（其实short fibers连接的就是相邻的Brodmann皮层分区，这样说才更明确。）

(2) long association fibers that make connections between more distant parts.

Contents

· 1Short association fibers

· 2Long association fibers

· 3See also

· 4References

· 5External links

Short association fibers[edit]

Many of the short association fibers (also called arcuate or "U"-fibers) lie immediately beneath the gray substance of the cortex of the hemispheres, and connect together adjacent gyri.[2] Some pass from one wall of the sulcus to the other.[2]

Long association fibers[edit]

The long association fibers connect the more widely separated gyri and are grouped into bundles.[2] They include the following:

Diffusion tensor imaging is a non-invasive method to study the course of association fibers.