Publications by authors named "Yorkiris Marmol Contreras"

Article Synopsis
  • Frustrative nonreward (FNR) is an emotional response triggered by the lack of essential resources (like food or social interaction), affecting behaviors and physical health.
  • FNR plays a role in various issues like irritability, aggression, motivation disorders, and social behavior, suggesting it’s important for understanding mental health.
  • Recent interest in FNR has increased due to the COVID-19 pandemic, which heightened its effects, leading to more research on animal models and brain mechanisms linked to psychiatric disorders.
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In humans, frustrating experiences are known to trigger relapse events and individuals with higher frustration intolerance show increased risk of developing substance use disorders (SUDs). Despite this clear relationship, frustration-related behavior is seldom studied concurrently with self-administration behavior in rodent models. A major obstacle has been the lack of robust, quantitative assays of frustration-related operant behavior thus far.

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Rationale: Currently there is little research into the role of frustration in substance use disorders despite research showing that frustration tolerance in humans is associated with a lower likelihood of developing substance use problems, better outcomes in recovery, and fewer relapses.

Objective: In order to address this need, our studies use a rat model to focus on frustration-related behavior in natural reward and addiction-related behavioral procedures. Frustration is defined as when a subject is unable to achieve a reinforcer, receives less of a reinforcer than anticipated, or has to work harder to achieve a reinforcer.

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