Limbic networks and associative learning: I. Entorhinal contributions to instrumental conditioning

Richard L. Port, Patricia W. Parsons, Kathleen Curtis, Kevin S. Seybold

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The hippocampal formation is a highly delineated brain structure that is believed to play a prominent role in learning and memory. The present experiment evaluated the contributions of medial and lateral perforant path input to bar press-conditioning under (a) continuous and (b) differential reinforcement of low rates of responding (DRL) schedules, and (c) shuttlebox avoidance conditioning. Bilateral deafferentation of either pathway had no effect on the acquisition of bar press responses or on performance under the DRL schedule. Deafferentation of the medial pathway facilitated acquisition of avoidance responses in a manner much like the effects seen in hippocampectomized animals. It is suggested that the medial perforant path participates in the expression of correlated patterns of neuronal discharge known to develop within the hippocampus and that this "model" serves to modulate the temporal characteristics of simple conditioned reflexes. Loss of the modulatory influence of the model may affect acquisition and extinction rates. Contributions of other hippocampal circuits are discussed in relation to established deficits.

Original languageEnglish
Pages (from-to)323-332
Number of pages10
JournalCurrent Psychology
Volume9
Issue number4
DOIs
StatePublished - 1 Dec 1990

Fingerprint

Perforant Pathway
Hippocampus
Appointments and Schedules
Learning
Classical Conditioning
Brain
Conditioning (Psychology)
Psychological Extinction
Reinforcement (Psychology)

Cite this

Port, Richard L. ; Parsons, Patricia W. ; Curtis, Kathleen ; Seybold, Kevin S. / Limbic networks and associative learning : I. Entorhinal contributions to instrumental conditioning. In: Current Psychology. 1990 ; Vol. 9, No. 4. pp. 323-332.
@article{198a0ae743f7446ea24d3d4b3ce715da,
title = "Limbic networks and associative learning: I. Entorhinal contributions to instrumental conditioning",
abstract = "The hippocampal formation is a highly delineated brain structure that is believed to play a prominent role in learning and memory. The present experiment evaluated the contributions of medial and lateral perforant path input to bar press-conditioning under (a) continuous and (b) differential reinforcement of low rates of responding (DRL) schedules, and (c) shuttlebox avoidance conditioning. Bilateral deafferentation of either pathway had no effect on the acquisition of bar press responses or on performance under the DRL schedule. Deafferentation of the medial pathway facilitated acquisition of avoidance responses in a manner much like the effects seen in hippocampectomized animals. It is suggested that the medial perforant path participates in the expression of correlated patterns of neuronal discharge known to develop within the hippocampus and that this {"}model{"} serves to modulate the temporal characteristics of simple conditioned reflexes. Loss of the modulatory influence of the model may affect acquisition and extinction rates. Contributions of other hippocampal circuits are discussed in relation to established deficits.",
author = "Port, {Richard L.} and Parsons, {Patricia W.} and Kathleen Curtis and Seybold, {Kevin S.}",
year = "1990",
month = "12",
day = "1",
doi = "10.1007/BF02687188",
language = "English",
volume = "9",
pages = "323--332",
journal = "Current Psychology",
issn = "0737-8262",
publisher = "Springer New York",
number = "4",

}

Limbic networks and associative learning : I. Entorhinal contributions to instrumental conditioning. / Port, Richard L.; Parsons, Patricia W.; Curtis, Kathleen; Seybold, Kevin S.

In: Current Psychology, Vol. 9, No. 4, 01.12.1990, p. 323-332.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Limbic networks and associative learning

T2 - I. Entorhinal contributions to instrumental conditioning

AU - Port, Richard L.

AU - Parsons, Patricia W.

AU - Curtis, Kathleen

AU - Seybold, Kevin S.

PY - 1990/12/1

Y1 - 1990/12/1

N2 - The hippocampal formation is a highly delineated brain structure that is believed to play a prominent role in learning and memory. The present experiment evaluated the contributions of medial and lateral perforant path input to bar press-conditioning under (a) continuous and (b) differential reinforcement of low rates of responding (DRL) schedules, and (c) shuttlebox avoidance conditioning. Bilateral deafferentation of either pathway had no effect on the acquisition of bar press responses or on performance under the DRL schedule. Deafferentation of the medial pathway facilitated acquisition of avoidance responses in a manner much like the effects seen in hippocampectomized animals. It is suggested that the medial perforant path participates in the expression of correlated patterns of neuronal discharge known to develop within the hippocampus and that this "model" serves to modulate the temporal characteristics of simple conditioned reflexes. Loss of the modulatory influence of the model may affect acquisition and extinction rates. Contributions of other hippocampal circuits are discussed in relation to established deficits.

AB - The hippocampal formation is a highly delineated brain structure that is believed to play a prominent role in learning and memory. The present experiment evaluated the contributions of medial and lateral perforant path input to bar press-conditioning under (a) continuous and (b) differential reinforcement of low rates of responding (DRL) schedules, and (c) shuttlebox avoidance conditioning. Bilateral deafferentation of either pathway had no effect on the acquisition of bar press responses or on performance under the DRL schedule. Deafferentation of the medial pathway facilitated acquisition of avoidance responses in a manner much like the effects seen in hippocampectomized animals. It is suggested that the medial perforant path participates in the expression of correlated patterns of neuronal discharge known to develop within the hippocampus and that this "model" serves to modulate the temporal characteristics of simple conditioned reflexes. Loss of the modulatory influence of the model may affect acquisition and extinction rates. Contributions of other hippocampal circuits are discussed in relation to established deficits.

UR - http://www.scopus.com/inward/record.url?scp=51249177052&partnerID=8YFLogxK

U2 - 10.1007/BF02687188

DO - 10.1007/BF02687188

M3 - Article

AN - SCOPUS:51249177052

VL - 9

SP - 323

EP - 332

JO - Current Psychology

JF - Current Psychology

SN - 0737-8262

IS - 4

ER -