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Olfactory learning in the rat immediately after birth: Unique salience of first odors.
Dev Psychobiol. 2009 Sep; 51(6):488-504.DP

Abstract

An infant rat's chance of survival is increased when it remains close to the nest. Early olfactory learning supports such adaptive behavior. Previous experiments indicated that non-associative odor exposure immediately after birth promoted later attachment to a similarly scented artificial nipple. The goal of the current experiments was to extend these findings on olfactory learning in the hours after birth by: exposing pups to more than one odor exposure (Experiment 1), dissecting the role of timing versus order of odor exposure (Experiment 2), testing the odor specificity of these effects (Experiments 3 and 4), and evaluating associative odor conditioning soon after birth (Experiment 5). Without explicit prior odor experience, pups only hours old do not respond much to a novel odor. Prior non-associative odor experience increases later motor activity to that same odor and to novel odors. Furthermore, these findings may be specific to certain amodal dimensions of the (in our case) lemon odor exposure. Single odor non-associative and associative conditioning was equally effective immediately after birth and during the third postnatal hour. Nevertheless, pups given two mere odor exposures responded to the first one more than the second at test, regardless of whether the exposures began immediately or 2 hr after birth. Possible mechanisms for these findings concerning early olfactory learning are discussed.

Authors+Show Affiliations

Department of Psychology, Center for Development and, Behavioral Neuroscience, Binghamton University, Binghamton, New York 13902-6000, USA.No affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural

Language

eng

PubMed ID

19582793

Citation

Miller, Stacie S., and Norman E. Spear. "Olfactory Learning in the Rat Immediately After Birth: Unique Salience of First Odors." Developmental Psychobiology, vol. 51, no. 6, 2009, pp. 488-504.
Miller SS, Spear NE. Olfactory learning in the rat immediately after birth: Unique salience of first odors. Dev Psychobiol. 2009;51(6):488-504.
Miller, S. S., & Spear, N. E. (2009). Olfactory learning in the rat immediately after birth: Unique salience of first odors. Developmental Psychobiology, 51(6), 488-504. https://doi.org/10.1002/dev.20388
Miller SS, Spear NE. Olfactory Learning in the Rat Immediately After Birth: Unique Salience of First Odors. Dev Psychobiol. 2009;51(6):488-504. PubMed PMID: 19582793.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Olfactory learning in the rat immediately after birth: Unique salience of first odors. AU - Miller,Stacie S, AU - Spear,Norman E, PY - 2009/7/8/entrez PY - 2009/7/8/pubmed PY - 2009/12/16/medline SP - 488 EP - 504 JF - Developmental psychobiology JO - Dev Psychobiol VL - 51 IS - 6 N2 - An infant rat's chance of survival is increased when it remains close to the nest. Early olfactory learning supports such adaptive behavior. Previous experiments indicated that non-associative odor exposure immediately after birth promoted later attachment to a similarly scented artificial nipple. The goal of the current experiments was to extend these findings on olfactory learning in the hours after birth by: exposing pups to more than one odor exposure (Experiment 1), dissecting the role of timing versus order of odor exposure (Experiment 2), testing the odor specificity of these effects (Experiments 3 and 4), and evaluating associative odor conditioning soon after birth (Experiment 5). Without explicit prior odor experience, pups only hours old do not respond much to a novel odor. Prior non-associative odor experience increases later motor activity to that same odor and to novel odors. Furthermore, these findings may be specific to certain amodal dimensions of the (in our case) lemon odor exposure. Single odor non-associative and associative conditioning was equally effective immediately after birth and during the third postnatal hour. Nevertheless, pups given two mere odor exposures responded to the first one more than the second at test, regardless of whether the exposures began immediately or 2 hr after birth. Possible mechanisms for these findings concerning early olfactory learning are discussed. SN - 1098-2302 UR - https://www.unboundmedicine.com/medline/citation/19582793/Olfactory_learning_in_the_rat_immediately_after_birth:_Unique_salience_of_first_odors_ L2 - https://doi.org/10.1002/dev.20388 DB - PRIME DP - Unbound Medicine ER -