{
  "id": 3096217,
  "title": "Brain circuit keeps tabs on what just happened to aid judgment of what’s happening now",
  "url": "https://urgent.news/2026/08/24/brain-circuit-keeps-tabs-on-what-just-happened-to-aid-judgment-of",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-24T19:40:00.000Z",
  "source": {
    "name": "MIT News Research",
    "slug": "mit-news-research",
    "url": "https://news.mit.edu/2026/brain-keeps-tabs-what-just-happened-to-aid-judgment-whats-happening-now-0824"
  },
  "original_language": "en",
  "account": "A brain must constantly adapt to the rapidly changing sensory world, balancing openness to new information and leveraging prior experience to make predictions. In a new study published in Science, MIT neuroscientists discovered a circuit linking a sensory decision-making region with one that advises on the recent changes in sensory input. Study senior author Dr. Mriganka Sur explains that this circuit enables a comparison between what just happened and what is happening now, allowing the organism to act accordingly. Lead author Dr. Ning Leow, now at A*STAR in Singapore, notes that the study in mice provides insights into analogous circuitry in humans, where the anterior cingulate cortex (ACC) in the prefrontal cortex makes sensory decisions based on advice from the lateral posterior thalamus (LP) in the thalamus. Traditionally studied for its role in attention and filtering visual information, the researchers found that LP is also crucial for comparing present information with the immediate past to highlight meaningful changes, influencing whether the decision should be maintained or updated. The researchers trained mice to play a video game where they had to discern trends in moving dots. By recording the activity of the LP-ACC circuit and analyzing the response of neurons in the ACC, they demonstrated that mice factored in both the present and recent history of sensory input. Using optogenetics to manipulate the circuit, they confirmed that the circuit is causally involved in the comparison process that influences how current evidence is interpreted. This finding has implications for understanding the brain function in autism, where patients often struggle with filtering out sensory stimuli and making predictions about the sensory world.",
  "summary": "To keep track of what’s going on in front of it, the brain relies not only on what it sees, but also a comparison with what it just saw. A new study pinpoints the circuit that provides that service.",
  "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."
}