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Emergence of conditioned cardiac responses to an olfactory CS paired with an acoustic startle UCS during development: form and autonomic origins.
Dev Psychobiol. 1997 Mar; 30(2):151-63.DP

Abstract

Pairing an olfactory conditioned stimulus (CS) with an acoustic startle unconditioned stimulus (UCS) produced conditioned bradycardia in rats ranging from 12 days of age to adulthood but failed to produce conditioning in 10-day-olds (Experiment 1). The second experiment compared the effects of two different UCSs, acoustic startle and electric shock. The startle UCS produced conditioned bradycardia accompanied by immobility. In contrast, the shock UCS produced conditioned tachycardia accompanied by behavioral activation. Pharmacological analysis revealed that activation of the parasympathetic nervous system (PNS) produced the conditioned bradycardia (Experiment 3) and that activation of the sympathetic nervous system (SNS) produced the conditioned tachycardia (Hunt, Hess, & Campbell, 1994). Further comparisons revealed that the startle UCS established conditioning several days earlier in development than the shock UCS. The ability of the PNS to respond to phasic stimulation earlier in development than the SNS was discussed as a possible mechanism for the early development of conditioned bradycardia.

Authors+Show Affiliations

Department of Psychology, Princeton University, NJ 08544, USA.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

9068969

Citation

Hunt, P S., et al. "Emergence of Conditioned Cardiac Responses to an Olfactory CS Paired With an Acoustic Startle UCS During Development: Form and Autonomic Origins." Developmental Psychobiology, vol. 30, no. 2, 1997, pp. 151-63.
Hunt PS, Richardson R, Hess MF, et al. Emergence of conditioned cardiac responses to an olfactory CS paired with an acoustic startle UCS during development: form and autonomic origins. Dev Psychobiol. 1997;30(2):151-63.
Hunt, P. S., Richardson, R., Hess, M. F., & Campbell, B. A. (1997). Emergence of conditioned cardiac responses to an olfactory CS paired with an acoustic startle UCS during development: form and autonomic origins. Developmental Psychobiology, 30(2), 151-63.
Hunt PS, et al. Emergence of Conditioned Cardiac Responses to an Olfactory CS Paired With an Acoustic Startle UCS During Development: Form and Autonomic Origins. Dev Psychobiol. 1997;30(2):151-63. PubMed PMID: 9068969.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Emergence of conditioned cardiac responses to an olfactory CS paired with an acoustic startle UCS during development: form and autonomic origins. AU - Hunt,P S, AU - Richardson,R, AU - Hess,M F, AU - Campbell,B A, PY - 1997/3/1/pubmed PY - 2000/6/20/medline PY - 1997/3/1/entrez SP - 151 EP - 63 JF - Developmental psychobiology JO - Dev Psychobiol VL - 30 IS - 2 N2 - Pairing an olfactory conditioned stimulus (CS) with an acoustic startle unconditioned stimulus (UCS) produced conditioned bradycardia in rats ranging from 12 days of age to adulthood but failed to produce conditioning in 10-day-olds (Experiment 1). The second experiment compared the effects of two different UCSs, acoustic startle and electric shock. The startle UCS produced conditioned bradycardia accompanied by immobility. In contrast, the shock UCS produced conditioned tachycardia accompanied by behavioral activation. Pharmacological analysis revealed that activation of the parasympathetic nervous system (PNS) produced the conditioned bradycardia (Experiment 3) and that activation of the sympathetic nervous system (SNS) produced the conditioned tachycardia (Hunt, Hess, & Campbell, 1994). Further comparisons revealed that the startle UCS established conditioning several days earlier in development than the shock UCS. The ability of the PNS to respond to phasic stimulation earlier in development than the SNS was discussed as a possible mechanism for the early development of conditioned bradycardia. SN - 0012-1630 UR - https://www.unboundmedicine.com/medline/citation/9068969/Emergence_of_conditioned_cardiac_responses_to_an_olfactory_CS_paired_with_an_acoustic_startle_UCS_during_development:_form_and_autonomic_origins_ DB - PRIME DP - Unbound Medicine ER -