Excitotoxic lesions of the gustatory thalamus eliminate consummatory but not instrumental successive negative contrast in rats

Sastre, Aristides; Reilly, Steve

doi:10.1016/j.bbr.2006.01.026

Cited by 19 publications

(24 citation statements)

References 50 publications

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“…Similar dissociations between these two procedures have been observed with lesions of the hippocampus , nucleus accumbens (Leszczuk and Flaherty, 2000), and gustatory thalamus (Sastre and Reilly, 2006). Whereas hippocampal and accumbens lesions disrupted iSNC and had no detectable effects for cSNC, the opposite was the case for gustatory thalamus lesions.…”

Section: Acc and Psychological Painmentioning

confidence: 58%

Behavioral neuroscience of psychological pain

Papini

Fuchs

Torres

2015

Neuroscience & Biobehavioral Reviews

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Section: Acc and Psychological Painmentioning

confidence: 58%

Behavioral neuroscience of psychological pain

Papini

Fuchs

Torres

2015

Neuroscience & Biobehavioral Reviews

View full text Add to dashboard Cite

“…This is perhaps not surprising, since both cafeteria groups demonstrated low levels of operant pellet self-administration during the training and extinction phases. These effects may be explained by the successive negative contrast effect, which describes a change in animals' behavior following a downshift in the qualitative or quantitative value of an expected reward [39] and is often observed in the context of instrumental settings when food pellets are used as reward [40], [41]. Indeed, since rats compare the present reward with their previous experiences and respond according to its relative value [42], rats that previously had access to highly palatable cafeteria items may not perceive the operant pellet to be as rewarding as the rats fed chow-only.…”

Section: Discussionmentioning

confidence: 99%

Effect of Cafeteria Diet History on Cue-, Pellet-Priming-, and Stress-Induced Reinstatement of Food Seeking in Female Rats

et al. 2014

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BackgroundRelapse to unhealthy eating habits is a major problem in human dietary treatment. The individuals most commonly seeking dietary treatment are overweight or obese women, yet the commonly used rat reinstatement model to study relapse to palatable food seeking during dieting primarily uses normal-weight male rats. To increase the clinical relevance of the relapse to palatable food seeking model, here we pre-expose female rats to a calorically-dense cafeteria diet in the home-cage to make them overweight prior to examining the effect of this diet history on cue-, pellet-priming- and footshock-induced reinstatement of food seeking.MethodsPost-natal day 32 female Long-Evans rats had seven weeks of home-cage access to either chow only or daily or intermittent cafeteria diet alongside chow. Next, they were trained to self-administer normally preferred 45 mg food pellets accompanied by a tone-light cue. After extinction, all rats were tested for reinstatement induced by discrete cue, pellet-priming, and intermittent footshock under extinction conditions.ResultsAccess to daily cafeteria diet and to a lesser degree access to intermittent cafeteria diet decreased food pellet self-administration compared to chow-only. Prior history of these cafeteria diets also reduced extinction responding, cue- and pellet-priming-induced reinstatement. In contrast, modest stress-induced reinstatement was only observed in rats with a history of daily cafeteria diet.ConclusionA history of cafeteria diet does not increase the propensity for cue- and pellet-priming-induced relapse in the rat reinstatement model but does appear to make rats more susceptible to footshock stress-induced reinstatement.

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“…As mentioned in the introduction, a variety of results suggest that the consummatory behavior of mammals may be more sensitive to incentive shifts than their instrumental behavior (e.g., [12]). Moreover, lesion experiments show that iSNC and cSNC are dissociable [30]–[32]. Accordingly, additional dependent variables were registered in an attempt to detect evidence for incentive encoding in toads, but none of them provided clear results.…”

Section: Discussionmentioning

confidence: 99%

Incentive or Habit Learning in Amphibians?

et al. 2011

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Toads (Rhinella arenarum) received training with a novel incentive procedure involving access to solutions of different NaCl concentrations. In Experiment 1, instrumental behavior and weight variation data confirmed that such solutions yield incentive values ranging from appetitive (deionized water, DW, leading to weight gain), to neutral (300 mM slightly hypertonic solution, leading to no net weight gain or loss), and aversive (800 mM highly hypertonic solution leading to weight loss). In Experiment 2, a downshift from DW to a 300 mM solution or an upshift from a 300 mM solution to DW led to a gradual adjustment in instrumental behavior. In Experiment 3, extinction was similar after acquisition with access to only DW or with a random mixture of DW and 300 mM. In Experiment 4, a downshift from DW to 225, 212, or 200 mM solutions led again to gradual adjustments. These findings add to a growing body of comparative evidence suggesting that amphibians adjust to incentive shifts on the basis of habit formation and reorganization.

show abstract

Excitotoxic lesions of the gustatory thalamus eliminate consummatory but not instrumental successive negative contrast in rats

Cited by 19 publications

References 50 publications

Behavioral neuroscience of psychological pain

Behavioral neuroscience of psychological pain

Effect of Cafeteria Diet History on Cue-, Pellet-Priming-, and Stress-Induced Reinstatement of Food Seeking in Female Rats

Incentive or Habit Learning in Amphibians?

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