Is, no differences in the overall wiring are present ( Marr 1971 McNaughton and Morris 1987 Treves and Rolls 1994 Hasselmo et al. Network is taken as the stepping stone underlying its functions, assuming that this key feature holds throughout CA3 that In mostįunctional analyses of CA3, be it modeling, electrophysiological, or lesion studies, the presence of this strong autoassociative Of autoassociative networks as the most striking and therefore functionally determinant feature of the CA3 network. This has lead to the well-established concept Of many researchers interested in understanding the functional relevance of CA3. This distinguishing feature has attracted the attention
In addition point to connectional heterogeneities that may point to functional specializations in CA3, on top of its roleĪs an autoassociative network uniquely relevant to efficient encoding and recall of information.Ī major source of input to CA3 is originating from bilateral CA3 itself. The data reviewed strongly support this notion but That CA3 is particularly wired to function as an autoassociative network. On the subject and to raise the issue whether or not the known architecture of the field supports the generally accepted notion
Here, I have aimed to update already existing excellent reviews Intrinsic wiring of CA3 as a basis for other contributions. To add to the confusion, French neuroanatomists refer to the horn shaped lateral part of the fourth ventricle with its choroid plexus leaving the foramen like a posy of flowers as the “corne d'abondance” (horn of plenty, or cornucopia).Within the framework of a special issue on CA3, it was deemed relevant to summarize what is known about the extrinsic and It is of interest that the related hippocampal commissure together with the crura of the fornix, is sometimes termed the “psalterium” or “lyra Davidis”. King David conquered a Jordanian tribe, the Ammonites, who were descendants of Lot, by the son of his younger daughter. The Greek form of the name was Ammon, the Libyan Jupiter whom the Greeks identified with Zeus. The term Ammon's horn is a metaphor that refers to the ram shaped horns 5 on the head representing the Egyptian God Amun who protected the Pharaoh Taharqa in the temple of Kawa.
Albrecht von Haller, the anatomist, indicated that the term Ammon's horn was already used in a paper of the Oeconomische Abhandlung of 1755 (Haller, 1774–7, vol 2 p 507). Thus Ammon's horn was probably not in use at this date. 4 In 1732 Jacques Bénigne Winslow used the term ram's horn. 2 3 An early, anatomical use is in the 1742 book of a felicitously named surgeon René Jacques Croissant de Garengeot. 1 Less than two centuries later, the hippocampus was called Ammon's horn. The hippocampus received its name from the Italian Julius Caesar Arantius in the late 16th century. They were once supposed to be coiled snakes petrified, and hence called “snake-stones” from their resemblance to the involuted horn of Jupiter Ammon.
The term Cornu Ammonis, or Ammon's horn, is a well known description of the whorled chambered shells of a fossil genus of Cephalopods. With its base in ancient classical history, neuroanatomy provides several metaphors that relate the gods and the brain. Neurologists recognise it as each of two elongated eminences (hippocampus major and minor) on the floor of each lateral ventricle of the brain so called from their supposed resemblance to the fish. that of Cheapside was of Neptune on a hippocampus, with his Tritons and Nêreides”. The earliest use (Oxford English Dictionary) was in 1606, cited as “Drummond of Hawthornden” Let. In mythology it was a sea horse, having two forefeet, with the body ending in a dolphin's or fish's tail, represented as drawing the vehicle of Neptune the sea God. The word hippocampus comes from late Latin: hippocampus, derived from the Greek words for a horse+sea monster.