Correction to: Morphological diversity and connectivity of hippocampal interneurons
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The original version of this article inadvertently presented a mistake regarding the termination zones of the entorhinal cotex in the dentate gyrus. The termination zones were erroneously swapped in both Fig. 7 and the associated text.
6.3 The Dentate Gyrus (DG)
The dentate gyrus is the most divergent of the hippocampal subfields with respect to neuronal population, layering and synaptic connectivity. The monopolar dendritic morphology of dentate principal cells, the granule cells (DGC), is found in the molecular layers (ML) and their axons extend from the soma into the hilus. The DG has specific afferents that arise from layer 2 of the lateral and medial EC (outer and middle ML respectively) and the commissural/ associative inputs from hilar mossy cells (inner ML). The output of DGCs is the mossy fiber, which also produces hilar collaterals preferentially targeting INs and the mossy fiber bouton synapse with CA3 PCs (126). The diversity of IN subtypes in the DG is markedly different from that of the CA1-3 regions; albeit with similarities in their principles. Previous morphological studies and reviews have identified at least 4 classes of DG IN, which have distinct morphology (7, 127, 128). Here we will highlight key differences from CA1-CA3 INs, primarily describing 9 distinct and well established types identified on the basis of anatomical and neurochemical criteria.
Revised figure in which “Lateral EC” and “Medial EC” are correctly placed.