from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of the prominent, rounded, elevated convolutions on the surfaces of the cerebral hemispheres.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A ridge or fold on the cerebral cortex.
from the GNU version of the Collaborative International Dictionary of English
- n. A convoluted ridge between grooves; a convolution. See brain.
from The Century Dictionary and Cyclopedia
- n. In anatomy, one of the rounded ridges into which the surface of the cerebral hemisphere is divided by the fissures or sulci; a convolution; a gyre.
- n. The gyrus which arches over the extremity of the fissure of Sylvius. See sulcus.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a convex fold or elevation in the surface of the brain
A region of the brain known as the angular gyrus is partly responsible for the human ability to understand metaphor, according to research led by V.S. Ramachandran, director of the Center for Brain and Cognition at the University of California, San Diego.
Such a pattern is reflected in the word's etymology: "girandole" can be traced back, by way of French and Italian, to the Latin word "gyrus," meaning "gyre" or "a circular or spiral motion or form."
It also results from lesions interrupting the neural input to this left angular gyrus from the visual or calcarine cortical areas (1,
The paralimbic lobe is an outgrowth of the cingulate gyrus, which is known to elaborate social communication and social emotions such as feelings of separation distress and maternal intent in all other mammals.
The area involved was found to be the third left frontal gyrus, which is often called Broca's convolution as a result.
The anterior part is subdivided by shallow sulci into three or four short gyri, while the posterior part is formed by one long gyrus, which is often bifurcated at its upper end.
When she thought about playing tennis, the supplementary motor cortex, which is involved in planning movements, became active, but when she imagined walking through her house, the parahippocampal gyrus, which is needed for spatial navigation, was activated.
While viewing positive images, women showed stronger and more extensive activation in the right superior temporal gyrus, which is involved in auditory processing and memory.
According to the study, dentate gyrus, which is located in the hippocampus in the brain and thought to be responsible for working memory and mood regulation, remained immature in an animal model of schizophrenia.
Behind this is the angular gyrus which is connected with visual word memory.