layers of hippocampus

(redirected from oriens layer)

layers of hippocampus

[TA]
four layers formed by cells and cell processes; they are, beginning at the alveus and ventricular surface: the oriens layer [TA] (stratum oriens [TA]), which contains basal dendrites and axon collaterals of the pyramidal cells; the pyramidal layer [TA] (stratum pyramidale [TA]), which contains the somata of the large pyramidal cells of the hippocampus; the radiant layer [TA] (stratum radiatum [TA]), which contains the branching dendrites of the pyramidal cells and recurrent axon collaterals of the pyramidal cells; and the lacunar-molecular layer [TA] (stratum moleculare et substratum lacunosum [TA]), which contains the distal dendrites and some of the incoming axons of the preforant pathway.
Synonym(s): strata hippocampi [TA]
References in periodicals archive ?
GAD positive neurons distributed densely adjacent to pyramidal cell layer of CA1 and CA3 subregion and adjacent to granule cell layer of DG subregion of hippocampus in DMSO treated rats, and there are also some diffused GAD positive neurons in molecular layer and oriens layer of the hippocampus (Figures 4(a) and 4(b)).
Immunohistochemistry study showed that the BDNF positive particles existed in the cytoplasm of cells which localized in CA1, CA3, and DG regions close to the pyramidal neuron and granule cells layer, as well as in the molecular and oriens layer of the hippocampus (Figures 6(a) and 6(b)) in DMSO control rats.
The ventral nuclei of the thalamus, cerebral cortex, oriens layer of the hippocampus, and raphe and tegmentum nuclei of the brain stem were strongly stained.