dentate gyrus


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Related to dentate gyrus: hippocampal sulcus, Ammon's horn, subiculum

den·tate gy·rus

[TA]
one of the two interlocking gyri composing the hippocampus, the other one being the Ammon horn.

den·tate gy·rus

(den'tāt jī'rŭs) [TA]
One of the two interlocking gyri composing the hippocampus, the other one being Ammon's horn.

dentate gyrus

A curved gyrus hidden along the medial surface of the temporal lobe of each cerebral hemisphere. It contains a cortex of three layers, with a single cell layer, that is part of the hippocampal formation, and it is folded inside the hippocampal sulcus, where it lies against the subicular edge of the parahippocampal gyrus. The surface of the dentate gyrus has regularly-spaced transverse grooves, which make the gyrus resemble a row of teeth.
Synonym: fascia dentata See: limbic system for illus
See also: gyrus
References in periodicals archive ?
In this study, we used EPO and GAL as short-term treatment to detect its effect on spatial memory tested by Morris water maze and its effect on proliferation in dentate gyrus of hippocampus.
We found transplanted cells located only in the vicinity of the implant location near the hippocampal fissure and did not see graft cells in the dentate gyrus.
Ikegaya," Brain-derived neurotrophic factor induces hyperexcitable reentrant circuits in the dentate gyrus," The Journal of Neuroscience, vol.
Because of the reduced NMDA receptor levels [42], reported reduction in AMPA/NMDA ratio in NL1 KOs [44] and observed involvement of NL1 in the recruitment of NMDARs [45], it was hypothesized that NL1 might be involved in the regulation of long-term synaptic plasticity in the dentate gyrus. Indeed, in vivo recordings demonstrated that NL1 KOs displayed diminished LTP [42], in keeping with the previously reported reduced excitation and LTP upon microRNA-mediated knockdown of NL1 in the dentate gyrus [40].
Abbreviations: alv, alveus; CA1-CA4, hippocampal sectors CA 1 to 4; cp, choroid plexus; cs, collateral sulcus; Fd, fascia dentata (dentate gyrus); Fg, fusiform gyrus; fmb, fimbria; Ins, insula; Itc, inferior temporal cortex; lv, lateral ventricle; or, optic radiations; pc, posterior commissure; pca, posterior cerebral artery; Phg, parahippocampal gyrus; Post Thal, posterior thalamus (pulvinar); PreS, presubiculum; Sub, subiculum; TCd, tail of the caudate nucleus (H&E, original magnifications X400 [B] and X100 [E]; TDP-43, original magnifications X400 [C, D, F, G, I] and X600 [H]; [beta] amyloid, original magnification X100 [J]).
Brain-derived neurotrophic factor and antidepressant drugs have different but coordinated effects on neuronal turnover, proliferation, and survival in the adult dentate gyrus. J Neurosci.
250 [micro]m area was randomly selected in CA1, CA3, and CA4 subregions as well as upper blade of dentate gyrus from each of the selected 5 [micro] thick hippocampal section and unbiased quantification was done manually using ocular micrometer scale.
Munoz, "Cytomegalovirus in the human dentate gyrus and its impact on neural progenitor cells: report of two cases," Clinical Neuropathology, vol.
Rampon, "New neurons in the dentate gyrus are involved in the expression of enhanced long-term memory following environmental enrichment," European Journal of Neuroscience, vol.
To further explore the possible underlying mechanism of the memory-enhancing effect of MME, the plasticity of the hippocampus was assessed via the assessment of the neuron density in CA1, CA2, CA3, and the dentate gyrus of the hippocampus (Figure 3).
Furthermore, the presence of a persistent neurogenesis has recently been discovered in a specific region of the hippocampus, the dentate gyrus; it involves the main neuronal type present there, the granule cells (for a review see [10]).
PV-positive interneurons were located in all layers of the dentate gyrus. They were the most abundant in the hilus and less in the stratum moleculare, and only several cells were visible in the granule cell layer.