{
  "id": 11479367,
  "title": "Modeling the Neurocircuitry Involved in Binge Drinking",
  "url": "https://urgent.news/2026/10/02/modeling-the-neurocircuitry-involved-in-binge-drinking",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-02T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.28.754793v1?rss=1"
  },
  "original_language": "en",
  "account": "Binge drinking is marked by an initial intense and rapid consumption of alcohol, followed by a prolonged period of lower-rate maintenance drinking. However, the neural circuitry that drives and regulates these phases is not fully understood. Researchers have now created a computational model that connects key brain regions involved in binge drinking.\n\nThe model includes cortical Seek (mPFC) and Go (insula) populations that form a loop of mutual excitation. A SetPoint population integrates information from striatal activity, serving as an internal estimate of effort and consumption. The model also comprises ventral (nucleus accumbens, NAc) and dorsal (dorsolateral striatum, DLS) striatal populations, as well as a VTA population that provides transient reward-prediction signals via dopamine.\n\nUsing firing-rate formalism with noisy dynamics, the researchers were able to replicate the two-phase binge pattern. They found that the PFC-insula loop functions as a bistable module, initiating and maintaining the initial high-intensity phase of drinking. Meanwhile, feedback from the striatum to the SetPoint population governs the timing of the shift from front-loading to sustained drinking, without affecting the intensity of the binge.\n\nThe researchers also discovered that the magnitude of the VTA dopamine transient directly influences the intensity of the initial binge phase. Through sensitivity analyses, they identified PFC-insula connectivity, VTA-to-NAc modulation, and striato-cortical feedback as crucial parameters that determine whether the two-phase binge pattern persists or is disrupted.\n\nThese findings offer a mechanistic framework for understanding binge-like alcohol intake in terms of specific circuit motifs. The researchers propose that these neural circuits could be targeted in interventions for alcohol use disorder.",
  "summary": "Binge drinking is characterized by an initial bout of rapid, high-vigor alcohol intake (front-loading) followed by a prolonged period of lower-rate \"maintenance\" drinking, yet the circuit mechanisms that generate and regulate these phases remain unclear. Here, we develop a systems-level computational model that links the structure of binge drinking to interactions among medial prefrontal cortex…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}