{
  "id": 7832494,
  "title": "Eye-specific drive and binocular suppression in mouse visual cortex during critical period development",
  "url": "https://urgent.news/2026/09/16/eye-specific-drive-and-binocular-suppression-in-mouse-visual-cortex",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-16T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.10.750218v1?rss=1"
  },
  "original_language": "en",
  "account": "A team of researchers has investigated the development of sensory integration in mice by examining the behavior of layer 2/3 neurons in the primary visual cortex. This region of the visual cortex, known as the binocular region (bV1), is crucial for understanding sensory integration as it integrates inputs from both the right (contralateral) and left (ipsilateral) eyes. As mice develop, the response properties of these neurons become more aligned, which is crucial for the development of integrated binocular vision.\n\nTo better understand the mechanisms behind this alignment, the researchers employed chronic two-photon calcium imaging to record the monocular and binocular visual response properties of these neurons at various stages of development. Their findings revealed that input from the ipsilateral eye (ipsi) not only strengthened the responses of bV1 neurons but also led to an increase in binocular suppression. Additionally, the binocular tuning properties of these neurons were more closely aligned with the contralateral (contra) inputs than with the ipsilateral ones throughout the critical development period. However, as development progressed, they became more aligned with the ipsilateral inputs.\n\nAnother key finding from the study was that the explained variance of ipsilateral inputs in predicting binocular tuning increased. This suggests that as the visual system develops, the influence of ipsilateral inputs on the binocular responses of bV1 neurons becomes more pronounced. Furthermore, in neurons that had been chronically tracked, the preferred orientation of ipsilateral-driven responses was found to be less stable than that of contralateral-driven responses.\n\nUsing population-based decoding analyses, the researchers also discovered that while monocular and binocular visual encoding remained stable during development, there was increased generalizability between the visual encoding by binocular and ipsilateral-driven responses. This indicates that, during the critical period of development, the visual system becomes more adaptable in how it processes information from both eyes, ultimately leading to the integration of binocular vision.\n\nIn conclusion, the findings of this study suggest a reciprocal interaction between the development of ipsilateral inputs and the binocular responses of bV1 neurons. As the ipsilateral inputs dynamically shape both excitatory and potentially inhibitory drives onto these neurons, the circuitry responsible for integrated binocular vision is generated during the critical period of development in mice.",
  "summary": "A key function of cortical sensory circuits is to integrate information from multiple sources to build a unified representation of the external environment. The binocular region of the mouse primary visual cortex (bV1) is a valuable model for studying sensory integration, as visual response properties of inputs from the contralateral (contra) and ipsilateral (ipsi) eye onto bV1 neurons become…",
  "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."
}