Layer that is part of the CA fields of the hippocampus consisting of a narrow relatively cell free layer located deep to the pyramidal cell layer extending through areas CA1, CA2 and CA3. (adapted from Paxinos The rat central nervous system, 2nd ed, Academic Press, San Diego, 1995) [ BIRNLEX:4113 ]

Synonyms: stratum oriens hippocampi stratum oriens oriens layer of hippocampus polymorphic layer of the hippocampus polymorphic layer of hippocampus oriens layer of the hippocampus

This is just here as a test because I lose it