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Sign-tracking

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https://www.readbyqxmd.com/read/29602178/ethanol-exposure-history-and-alcoholic-reward-differentially-alter-dopamine-release-in-the-nucleus-accumbens-to-a-reward-predictive-cue
#1
Amanda M Fiorenza, Tatiana A Shnitko, Kaitlin M Sullivan, Sudheer R Vemuru, Alexander Gomez-A, Julie Y Esaki, Charlotte A Boettiger, Claudio Da Cunha, Donita L Robinson
BACKGROUND: Conditioned stimuli (CS) that predict reward delivery acquire the ability to induce phasic dopamine release in the nucleus accumbens. This dopamine release may facilitate conditioned approach behavior, which often manifests as approach to the site of reward delivery (called 'goal-tracking') or to the CS itself (called 'sign-tracking'). Previous research has linked sign-tracking in particular to impulsivity and drug self-administration, and addictive drugs may promote the expression of sign-tracking...
March 30, 2018: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/29407412/nicotine-enhanced-pavlovian-conditioned-approach-is-resistant-to-omission-of-expected-outcome
#2
Sierra J Stringfield, Charlotte A Boettiger, Donita L Robinson
Conditioned stimuli contribute to the resilience of nicotine addiction in that nicotine-associated cues can influence smokers and promote relapse. These stimuli are thought to acquire incentive motivational properties through a Pavlovian mechanism, and this phenomenon can be measured in animals by observing conditioned approach to the conditioned stimulus (sign-tracking) or to the location of unconditioned stimulus delivery (goal-tracking). Goal-tracking is thought to be more flexible than sign-tracking in response to changes in expected outcome...
January 29, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29378293/nmda-receptors-in-the-avian-amygdala-and-the-premotor-arcopallium-mediate-distinct-aspects-of-appetitive-extinction-learning
#3
Meng Gao, Daniel Lengersdorf, C Stüttgen Maik, Onur Güntürkün
Extinction learning is an essential mechanism that enables constant adaptation to ever-changing environmental conditions. The underlying neural circuit is mostly studied with rodent models using auditory cued fear conditioning. In order to uncover the variant and the invariant neural properties of extinction learning, we adopted pigeons as an animal model in an appetitive sign-tracking paradigm. The animals firstly learned to respond to two conditioned stimuli in two different contexts (CS-1 in context A and CS-2 in context B), before conditioned responses to the stimuli were extinguished in the opposite contexts (CS-1 in context B and CS-2 in context A)...
January 26, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29374305/effects-of-nicotine-self-administration-on-incentive-salience-in-male-sprague-dawley-rats
#4
Paula F Overby, Carter W Daniels, Armani Del Franco, Julianna Goenaga, Gregory L Powell, Cassandra D Gipson, Federico Sanabria
RATIONALE: Prolonged use of nicotine appears to enhance incentive salience, a motivational-cognitive process that transforms an otherwise neutral stimulus into a "wanted" stimulus. It has been suggested that nicotinic enhancement of incentive salience contributes to the potential of relapse in individuals with tobacco addiction. However, there are two main limitations of prior research that caution this claim: (a) the use of passive experimentally delivered nicotine and (b) the use of sign-tracking as an index of incentive salience, without acknowledging the competing nature of goal- and sign-tracking responses...
January 26, 2018: Psychopharmacology
https://www.readbyqxmd.com/read/29339559/evidence-of-structure-and-persistence-in-motivational-attraction-to-serial-pavlovian-cues
#5
Elizabeth B Smedley, Kyle S Smith
Sign-tracking is a form of autoshaping where animals develop conditioned responding directed toward stimuli predictive of an outcome even though the outcome is not contingent on the animal's behavior. Sign-tracking behaviors are thought to arise out of the attribution of incentive salience (i.e., motivational value) to reward-predictive cues. It is not known how incentive salience would be attributed to serially occurring cues, despite cues often occurring in a sequence in the real world as reward approaches...
February 2018: Learning & Memory
https://www.readbyqxmd.com/read/29324797/sex-dependent-impact-of-early-life-stress-and-adult-immobilization-in-the-attribution-of-incentive-salience-in-rats
#6
Silvia Fuentes, Javier Carrasco, Abigail Hatto, Juan Navarro, Antonio Armario, Manel Monsonet, Jordi Ortiz, Roser Nadal
Early life stress (ELS) induces long-term effects in later functioning and interacts with further exposure to other stressors in adulthood to shape our responsiveness to reward-related cues. The attribution of incentive salience to food-related cues may be modulated by previous and current exposures to stressors in a sex-dependent manner. We hypothesized from human data that exposure to a traumatic (severe) adult stressor will decrease the attribution of incentive salience to reward-associated cues, especially in females, because these effects are modulated by previous ELS...
2018: PloS One
https://www.readbyqxmd.com/read/29315659/the-role-of-glutamate-signaling-in-incentive-salience-second-by-second-glutamate-recordings-in-awake-sprague-dawley-rats
#7
Seth R Batten, Francois Pomerleau, Jorge Quintero, Greg A Gerhardt, Joshua S Beckmann
The attribution of incentive salience to reward-predictive stimuli has been shown to be associated with substance abuse-like behavior such as increased drug taking. Evidence suggests that glutamate neurotransmission and sequential N-methyl-D-aspartate (NMDA) activation are involved in the attribution of incentive salience. Here we further explore the role of second-by-second glutamate neurotransmission in the attribution of incentive salience to reward-predictive stimuli by measuring sign-tracking behavior during a Pavlovian conditioned approach procedure using ceramic-based microelectrode arrays configured for sensitive measures of extracellular glutamate in awake behaving Sprague Dawley rats...
January 8, 2018: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29278696/individual-differences-in-incentive-salience-attribution-are-not-related-to-suboptimal-choice-in-rats
#8
Paulina López, Rodrigo Alba, Vladimir Orduña
Previous research has shown great variation in the extent to which individual rats attribute incentive salience to stimuli that are predictors of reinforcement. When using the Pavlovian Conditioned Approach procedure, in which a discrete stimulus is presented contingently before the delivery of reinforcement, the attribution of incentive salience is demonstrated by sign-tracking behavior (responses directed toward the stimulus predictor of reinforcement), while an absence of this attribution is reflected by goal-tracking behavior (responses directed toward the source of reinforcement)...
April 2, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29192653/a-translational-model-to-assess-sign-tracking-and-goal-tracking-behavior-in-children
#9
Michelle A Joyner, Ashley N Gearhardt, Shelly B Flagel
No abstract text is available yet for this article.
January 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29169849/disconnection-of-basolateral-amygdala-and-insular-cortex-disrupts-conditioned-approach-in-pavlovian-lever-autoshaping
#10
Helen M Nasser, Danielle S Lafferty, Ellen N Lesser, Sam Z Bacharach, Donna J Calu
Previously established individual differences in appetitive approach and devaluation sensitivity observed in goal- and sign-trackers may be attributed to differences in the acquisition, modification, or use of associative information in basolateral amygdala (BLA) pathways. Here, we sought to determine the extent to which communication of associative information between BLA and anterior portions of insular cortex (IC) supports ongoing Pavlovian conditioned approach behaviors in sign- and goal-tracking rats, in the absence of manipulations to outcome value...
January 2018: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29128392/adrenergic-manipulation-inhibits-pavlovian-conditioned-approach-behaviors
#11
Kyle Z Pasquariello, Marina Han, Cagla Unal, Paul J Meyer
Environmental rewards and Pavlovian reward cues can acquire incentive salience, thereby eliciting incentive motivational states and instigate reward-seeking. In rats, the incentive salience of food cues can be measured during a Pavlovian conditioned approach paradigm, in which rats engage in cue-directed approach ("sign-tracking") or approach the food delivery location ("goal-tracking"). While it has been shown that dopamine signaling is necessary for sign-tracking, some studies have suggested that norepinephrine is involved in learning to sign-track as well...
February 26, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29037660/nmda-receptor-blockade-specifically-impedes-the-acquisition-of-incentive-salience-attribution
#12
Jonathan J Chow, Joshua S Beckmann
Glutamatergic signaling plays an important role in learning and memory. Using Pavlovian conditioned approach procedures, the mechanisms that drive stimulus-reward learning and memory have been investigated. However, there are instances where reward-predictive stimuli can function beyond being solely predictive and can be attributed with "motivational value" or incentive salience. Using a Pavlovian conditioned approach procedure consisting of two different but equally predictive stimuli (lever vs. tone) we investigated the role NMDA receptor function has in the attribution of incentive salience...
February 15, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/28958752/under-the-influence-effects-of-adolescent-ethanol-exposure-and-anxiety-on-motivation-for-uncertain-gambling-like-cues-in-male-and-female-rats
#13
Samantha N Hellberg, Jeremy D Levit, Mike J F Robinson
Gambling disorder (GD) frequently co-occurs with alcohol use and anxiety disorders, suggesting possible shared mechanisms. Recent research suggests reward uncertainty may powerfully enhance attraction towards reward cues. Here, we examined the effects of adolescent ethanol exposure, anxiety, and reward uncertainty on cue-triggered motivation. Male and female adolescent rats were given free access to ethanol or control jello for 20days. Following withdrawal, rats underwent autoshaping on a certain (100%-1) or uncertain (50%-1-2-3) reward contingency, followed by single-session conditioned reinforcement and progressive ratio tasks, and 7days of omission training, during which lever pressing resulted in omission of reward...
January 30, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/28888030/increased-sign-tracking-behavior-in-adolescent-rats
#14
Nicole E DeAngeli, Sarah B Miller, Heidi C Meyer, David J Bucci
An autoshaping procedure was used to test the notion that conditioned stimuli (CSs) gain greater incentive salience during adolescence than young adulthood under conditions of social isolation rearing and food restriction. Rats were single-housed and placed on food restriction during 10 daily training sessions in which a lever (CS+ ) was presented then followed immediately by a food unconditioned stimulus (US). A second lever (CS- ) was presented on intermixed trials and was not reinforced. Despite the fact that food delivery was not contingent on the rats' behavior, all rats exhibited behaviors directed towards the lever (i...
November 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28699296/long-lasting-contribution-of-dopamine-in-the-nucleus-accumbens-core-but-not-dorsal-lateral-striatum-to-sign-tracking
#15
Kurt M Fraser, Patricia H Janak
The attribution of incentive salience to reward-paired cues is dependent on dopamine release in the nucleus accumbens core (NAcC). These dopamine signals conform to traditional reward-prediction error signals and have been shown to diminish with time. Here we examined whether the diminishing dopamine signal in the NAcC has functional implications for the expression of sign-tracking, a Pavlovian conditioned response indicative of the attribution of incentive salience to reward-paired cues. Food-restricted male Sprague Dawley rats were trained in a Pavlovian paradigm in which an insertable lever predicted delivery of food reward in a nearby food cup...
August 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28659281/diverse-roads-to-relapse-a-discriminative-cue-signaling-cocaine-availability-is-more-effective-in-renewing-cocaine-seeking-in-goal-trackers-than-sign-trackers-and-depends-on-basal-forebrain-cholinergic-activity
#16
Kyle K Pitchers, Kyra B Phillips, Jonte L Jones, Terry E Robinson, Martin Sarter
Stimuli associated with taking drugs are notorious instigators of relapse. There is, however, considerable variation in the motivational properties of such stimuli, both as a function of the individual and the nature of the stimulus. The behavior of some individuals (sign trackers, STs) is especially influenced by cues paired with reward delivery, perhaps because they are prone to process information via dopamine-dependent, cue-driven, incentive salience systems. Other individuals (goal trackers, GTs) are better able to incorporate higher-order contextual information, perhaps because of better executive/attentional control over behavior, which requires frontal cortical cholinergic activity...
July 26, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28487202/thalamic-mast-cell-activity-is-associated-with-sign-tracking-behavior-in-rats
#17
Christopher J Fitzpatrick, Jonathan D Morrow
Mast cells are resident immune cells in the thalamus that can degranulate and release hundreds of signaling molecules (i.e., monoamines, growth factors, and cytokines) both basally and in response to environmental stimuli. Interestingly, mast cell numbers in the brain show immense individual variation in both rodents and humans. We used a Pavlovian conditioned approach (PCA) procedure to examine whether mast cells are associated with individual variation in the attribution of incentive-motivational value to reward-related cues...
October 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28473252/alcohol-seeking-and-relapse-a-focus-on-incentive-salience-and-contextual-conditioning
#18
REVIEW
Milan D Valyear, Franz R Villaruel, Nadia Chaudhri
Environmental stimuli that reliably accompany alcohol intake can become associated with the pharmacological effects of alcohol through classical (Pavlovian) conditioning. Of growing interest to addiction researchers is whether or not this process results in the attribution of incentive salience to alcohol-predictive cues, which could motivate alcohol-seeking behavior and relapse. To evaluate this question, we present a review of rodent behavioral studies that examined the capacity of alcohol-predictive cues to (i) support sign-tracking behavior, (ii) serve as conditioned reinforcers, and (iii) produce Pavlovian-to-instrumental transfer...
May 1, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28417164/individual-differences-in-voluntary-alcohol-intake-in-rats-relationship-with-impulsivity-decision-making-and-pavlovian-conditioned-approach
#19
Marcia Spoelder, Jacques P Flores Dourojeanni, Kathy C G de Git, Annemarie M Baars, Heidi M B Lesscher, Louk J M J Vanderschuren
RATIONALE: Alcohol use disorder (AUD) has been associated with suboptimal decision making, exaggerated impulsivity, and aberrant responses to reward-paired cues, but the relationship between AUD and these behaviors is incompletely understood. OBJECTIVES: This study aims to assess decision making, impulsivity, and Pavlovian-conditioned approach in rats that voluntarily consume low (LD) or high (HD) amounts of alcohol. METHODS: LD and HD were tested in the rat gambling task (rGT) or the delayed reward task (DRT)...
July 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28210781/adolescent-cocaine-exposure-enhances-goal-tracking-behavior-and-impairs-hippocampal-cell-genesis-selectively-in-adult-bred-low-responder-rats
#20
M Julia García-Fuster, Aram Parsegian, Stanley J Watson, Huda Akil, Shelly B Flagel
RATIONALE: Environmental challenges during adolescence, such as drug exposure, can cause enduring behavioral and molecular changes that contribute to life-long maladaptive behaviors, including addiction. Selectively bred high-responder (bHR) and low-responder (bLR) rats represent a unique model for assessing the long-term impact of adolescent environmental manipulations, as they inherently differ on a number of addiction-related traits. bHR rats are considered "addiction-prone," whereas bLR rats are "addiction-resilient," at least under baseline conditions...
April 2017: Psychopharmacology
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