A Diffusely Preprogrammed but Sharply Trainable Hippocampus Model.
Abstract
It is postulated that one main function of the cerebral fornices during a mammal's behavior-formative period is to signal, from the CA3 sector of the hippocampus, decisions on species-typical acts within gross modes of behavior as determined by the core of the reticular formation. The gross mode is communicated over temporo-ammonic paths into the distal apical dendrites of CA3 pyramids. Sensory input patterns from all modalities are signaled over the mossy fibre system into the proximal apical dendrites of CA3 pyramids after the sensa have been habituation-filtered through the fascia dentata. By means of septo-fornical reinforcement signals, CA3's innate responses are progressively sharpened, functionally and anatomically, from diffuse patterns involving most of CA3's circuitry to well localized specific responses. Results obtained while simulating a circuit model of CA3 on a digital computer have shaped arguments leading to new operational principles for a diffusely preprogrammed but sharply trainable CA3 model. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 12, 1971
- Accession Number
- AD0720814
Entities
People
- Turner Mclardy
- William L. Kilmer
Organizations
- Michigan State University