Abstract
A detailed map of the sulphide silver staining of the rat's fascia dentata, hippocampus and subiculum is presented. This staining is located in the neuropil, in neuronal somata and in glial cells, as described in a previous paper. The present account is primarily concerned with the neuropil stain. This is laminar and coincides to a large extent with the terminal fields of certain intrahippocampal fibre systems, recently shown by other authors using reduced silver methods and autoradiographic methods. These fibre systems are: 1. Ipsilateral fibres from area entorhinalis, pars lateralis, to an outer zone of the molecular layer of fascia dentata. 2. Ipsi- and contralateral fibres from CA3c/CA4 to the socalled commissural zone of the molecular layer of fascia dentata. 3. Ipsi- and contralateral fibres from CA4/CA3 to CA3 and CA1. The present observations suggest that these fibres are heterogeneous with respect to sulphide silver staining. 4. Ipsilateral fibres from CA1 to a lateral segment of the subiculum.
Published Version
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