Sensitization of salt appetite is associated with increased "wanting" but not "liking" of a salt reward in the sodium-deplete rat

To examine the role of incentive sensitization in the potentiation of salt appetite by prior depletions, the authors assessed the motivation to obtain salt ("wanting") and the palatability of salt ("liking") independently in salt-sensitized rats. Breakpoint on a progressive ratio...

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Bibliographic Details
Published inBehavioral neuroscience Vol. 120; no. 1; p. 206
Main Authors Clark, Jeremy J, Bernstein, Ilene L
Format Journal Article
LanguageEnglish
Published United States 01.02.2006
Subjects
Animals
Appetitive Behavior - drug effects
Behavior, Animal - drug effects
Choice Behavior
Food Preferences
Male
Rats
Rats, Long-Evans
Reward
Sodium - administration & dosage
Sodium - deficiency
Sodium - pharmacology
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Summary:To examine the role of incentive sensitization in the potentiation of salt appetite by prior depletions, the authors assessed the motivation to obtain salt ("wanting") and the palatability of salt ("liking") independently in salt-sensitized rats. Breakpoint on a progressive ratio reinforcement schedule was used to measure salt wanting and taste reactivity was used to measure salt liking in rats with and without a history of Na+ depletion. Salt-sensitized rats displayed higher breakpoints relative to controls. However, a history of Na+ depletion was not associated with a greater positive shift in taste reactivity measures. The data suggest that these components of reward are separable in this model and support the general proposition that sensitization may alter wanting but not liking.
ISSN:0735-7044
DOI:10.1037/0735-7044.120.1.206