Table 2.
Structures forming the hippocamnpal region.
| Name | Name | Name | Name | Abbreviation |
|---|---|---|---|---|
| Hippocampal region | / | |||
| Hippocampal formation | / | |||
| Dentate gyrus | DG | |||
| Hippocampus proper (Cornu Ammonis) | HIPP | |||
| Field CA1 | CA1 | |||
| Field CA2 | CA2 | |||
| Field CA3 | CA3 | |||
| Subiculum | SUB | |||
| Parahippocampal gyrus | PHG | |||
| Presubiculum (area 27) | PRES | |||
| Parasubiculum (area 49)* | PARA | |||
| Entorhinal cortex (area 28) | EC | |||
| Perirhinal cortex (area 35)* | / | |||
| Ectorihinal cortex (area 36)* | / |
Structures forming the adult hippocampal region, as defined in the current study. In fetuses of 17–21 weeks gestational age, most of the structures that form the adult hippocampal region were recognizable. Only the areas labeled by an asterisk were not readily recognizable at the examined fetal ages. The lateral parahippocampal gyrus of the current study (lateral parahippocampal gyrus, see Nomenclature) may include the perirhinal and ectorhinal cortices. The abbreviations used in the current study are reported in the column “Abbreviation”.