Place navigation in the morris water maze under minimum and redundant extra-maze cue conditions

Andre Fenton, Maria Pia Arolfo, Jan Bures

Research output: Contribution to journalArticle

Abstract

Complex relational processes underlying place navigation learning were analyzed by minimizing the relational elements available to rats. The animals navigated in a standard water maze in darkness using controlled remote visual cues (back-lit shapes in opaque buckets aimed at the pool to keep the background dark) while being tracked by an infrared camera and computer. Learning was similar with 2 (AB) or 4 (ABCD) cues and as good as in a fully lit room with many cues (asymptotic escape time t=5-7 s). The ABCD-trained rats were not impaired by removal of any 2 cues (t=7). For AB-trained rats, adding 2 new cues (ABEF) or replacing AB with EF (EF) caused small (t=11) or big disruption (t=20), respectively. By block 2, both groups (ABEF, EF) returned to asymptotic performance. But testing the ABEF rats on block 2 with only EF indicated that EF was learned (t=12) but not as well as when only EF was present (t=5). Thus transfer from a redundant to a minimal cue condition is immediate and easier than vice versa. Theoretical implications are discussed.

Original languageEnglish (US)
Pages (from-to)178-189
Number of pages12
JournalBehavioral and Neural Biology
Volume62
Issue number3
DOIs
StatePublished - 1994

Fingerprint

Cues
Water
Learning
Darkness

ASJC Scopus subject areas

  • Physiology

Cite this

Place navigation in the morris water maze under minimum and redundant extra-maze cue conditions. / Fenton, Andre; Arolfo, Maria Pia; Bures, Jan.

In: Behavioral and Neural Biology, Vol. 62, No. 3, 1994, p. 178-189.

Research output: Contribution to journalArticle

@article{bbb1cedd340044a3896b390abb1597da,
title = "Place navigation in the morris water maze under minimum and redundant extra-maze cue conditions",
abstract = "Complex relational processes underlying place navigation learning were analyzed by minimizing the relational elements available to rats. The animals navigated in a standard water maze in darkness using controlled remote visual cues (back-lit shapes in opaque buckets aimed at the pool to keep the background dark) while being tracked by an infrared camera and computer. Learning was similar with 2 (AB) or 4 (ABCD) cues and as good as in a fully lit room with many cues (asymptotic escape time t=5-7 s). The ABCD-trained rats were not impaired by removal of any 2 cues (t=7). For AB-trained rats, adding 2 new cues (ABEF) or replacing AB with EF (EF) caused small (t=11) or big disruption (t=20), respectively. By block 2, both groups (ABEF, EF) returned to asymptotic performance. But testing the ABEF rats on block 2 with only EF indicated that EF was learned (t=12) but not as well as when only EF was present (t=5). Thus transfer from a redundant to a minimal cue condition is immediate and easier than vice versa. Theoretical implications are discussed.",
author = "Andre Fenton and Arolfo, {Maria Pia} and Jan Bures",
year = "1994",
doi = "10.1016/S0163-1047(05)80016-0",
language = "English (US)",
volume = "62",
pages = "178--189",
journal = "Neurobiology of Learning and Memory",
issn = "1074-7427",
publisher = "Academic Press Inc.",
number = "3",

}

TY - JOUR

T1 - Place navigation in the morris water maze under minimum and redundant extra-maze cue conditions

AU - Fenton, Andre

AU - Arolfo, Maria Pia

AU - Bures, Jan

PY - 1994

Y1 - 1994

N2 - Complex relational processes underlying place navigation learning were analyzed by minimizing the relational elements available to rats. The animals navigated in a standard water maze in darkness using controlled remote visual cues (back-lit shapes in opaque buckets aimed at the pool to keep the background dark) while being tracked by an infrared camera and computer. Learning was similar with 2 (AB) or 4 (ABCD) cues and as good as in a fully lit room with many cues (asymptotic escape time t=5-7 s). The ABCD-trained rats were not impaired by removal of any 2 cues (t=7). For AB-trained rats, adding 2 new cues (ABEF) or replacing AB with EF (EF) caused small (t=11) or big disruption (t=20), respectively. By block 2, both groups (ABEF, EF) returned to asymptotic performance. But testing the ABEF rats on block 2 with only EF indicated that EF was learned (t=12) but not as well as when only EF was present (t=5). Thus transfer from a redundant to a minimal cue condition is immediate and easier than vice versa. Theoretical implications are discussed.

AB - Complex relational processes underlying place navigation learning were analyzed by minimizing the relational elements available to rats. The animals navigated in a standard water maze in darkness using controlled remote visual cues (back-lit shapes in opaque buckets aimed at the pool to keep the background dark) while being tracked by an infrared camera and computer. Learning was similar with 2 (AB) or 4 (ABCD) cues and as good as in a fully lit room with many cues (asymptotic escape time t=5-7 s). The ABCD-trained rats were not impaired by removal of any 2 cues (t=7). For AB-trained rats, adding 2 new cues (ABEF) or replacing AB with EF (EF) caused small (t=11) or big disruption (t=20), respectively. By block 2, both groups (ABEF, EF) returned to asymptotic performance. But testing the ABEF rats on block 2 with only EF indicated that EF was learned (t=12) but not as well as when only EF was present (t=5). Thus transfer from a redundant to a minimal cue condition is immediate and easier than vice versa. Theoretical implications are discussed.

UR - http://www.scopus.com/inward/record.url?scp=0028172464&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028172464&partnerID=8YFLogxK

U2 - 10.1016/S0163-1047(05)80016-0

DO - 10.1016/S0163-1047(05)80016-0

M3 - Article

VL - 62

SP - 178

EP - 189

JO - Neurobiology of Learning and Memory

JF - Neurobiology of Learning and Memory

SN - 1074-7427

IS - 3

ER -