Topic
Gyrus
About: Gyrus is a research topic. Over the lifetime, 1206 publications have been published within this topic receiving 58649 citations. The topic is also known as: gyri & gyrus of brain.
Papers published on a yearly basis
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Papers
TL;DR: Findings in the human resemble those in rhesus monkeys, including overproduction of synaptic contacts in infancy, persistence of high levels of synaptic density to late childhood or adolescence, the absolute values of maximum and adult synaptic density, and layer specific differences.
Abstract: The formation of synaptic contacts in human cerebral cortex was compared in two cortical regions: auditory cortex (Heschl's gyrus) and prefrontal cortex (middle frontal gyrus). Synapse formation in both cortical regions begins in the fetus, before conceptual age 27 weeks. Synaptic density increases more rapidly in auditory cortex, where the maximum is reached near postnatal age 3 months. Maximum synaptic density in middle frontal gyrus is not reached until after age 15 months. Synaptogenesis occurs concurrently with dendritic and axonal growth and with myelination of the subcortical white matter. A phase of net synapse elimination occurs late in childhood, earlier in auditory cortex, where it has ended by age 12 years, than in prefrontal cortex, where it extends to midadolescence. Synaptogenesis and synapse elimination in humans appear to be heterochronous in different cortical regions and, in that respect, appears to differ from the rhesus monkey, where they are concurrent. In other respects, including overproduction of synaptic contacts in infancy, persistence of high levels of synaptic density to late childhood or adolescence, the absolute values of maximum and adult synaptic density, and layer specific differences, findings in the human resemble those in rhesus monkeys.
3,082 citations
TL;DR: This work assesses pain and emotion in each cingulate subregion, and assess whether pain is co-localized with negative affect, and finds that these activation patterns do not simply overlap.
Abstract: Acute pain and emotion are processed in two forebrain networks, and the cingulate cortex is involved in both. Although Brodmann's cingulate gyrus had two divisions and was not based on any functional criteria, functional imaging studies still use this model. However, recent cytoarchitectural studies of the cingulate gyrus support a four-region model, with subregions, that is based on connections and qualitatively unique functions. Although the activity evoked by pain and emotion has been widely reported, some view them as emergent products of the brain rather than of small aggregates of neurons. Here, we assess pain and emotion in each cingulate subregion, and assess whether pain is co-localized with negative affect. Amazingly, these activation patterns do not simply overlap.
1,791 citations
TL;DR: There was a significant main effect of sex on brain morphology, even after accounting for the larger global volumes of grey and white matter in males.
1,295 citations
TL;DR: Only the impairment produced by the TPA lesion was consistent with a difficulty in the formation of such associations, an interpretation which is strengthened by a consideration of the gross behavioral abnormalities that have been described repeatedly following this same lesion.
897 citations
TL;DR: In future, the transfer of in vivo structural and functional data into the same spatial reference system will enable accurate comparisons of cytoarchitectonic maps of the primary auditory cortex with activation centers as established with functional imaging procedures.
828 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 14 |
| 2024 | 21 |
| 2023 | 62 |
| 2022 | 90 |
| 2021 | 57 |
| 2020 | 70 |