layers of hippocampus

(redirected from stratum radiatum)

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 ?
18) A stainless steel bipolar stimulating electrode (FHC, Bowdoinham, ME, USA) was placed in stratum radiatum to stimulate the Schaffer collaterals.
TDE's effect on fEPSPs was recorded in the stratum radiatum of the CA1 hippocampus, in response to stimulation of Schaffer collaterals.
The electrical stimulation of the afferent fibers in the stratum radiatum at the intensities of 25-200 [micro]A, elicited a synchronous firing of the CA1 pyramidal cells (Fig.
Tetanic stimulation in stratum radiatum induced LTP in three groups at 25 [micro]A stimulus intensity (Fig.
We found that although eugenol depresses baseline synaptic transmission, it has no effect on the induction of LTP produced by tetanic stimulation of stratum radiatum.
To exclude the possibility that alterations in PSSD might be a consequence of changes in the volume of reference, we used a subset of the vibratome sections for volume estimation of the stratum radiatum of CA1, using the Cavalieri's principle (Gundersen and Jensen 1987).
n] is the measured area of CA1 stratum radiatum for each section.
00 HR/HR-B CCD camera system (Hamamatsu Photonics, Hamamatsu, Japan), from an area located between the upper and middle third of the CA1 stratum radiatum (300-500 [micro]m from the pyramidal cell layer; Leranth et al.
In neither of the two PSSD studies was there any significant variation in the total volume of the CA1 stratum radiatum (Table 1), confirming the validity of the volume correction procedure used in calculating PSSD.
Camera Lucida reconstruction of the morphology of biocytin-filled cells indicated that these interneurons had axonal arbors that were located primarily in stratum lacunosum-moleculare and stratum radiatum.