{
  "id": 6470004,
  "title": "Human single-neuron recordings reveal population coding of attentional dynamics during naturalistic movie viewing",
  "url": "https://urgent.news/2026/09/09/human-single-neuron-recordings-reveal-population-coding-of",
  "topic": "culture",
  "section": "Culture",
  "published": "2026-09-09T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.08.748346v1?rss=1"
  },
  "original_language": "en",
  "account": "Our eyes constantly move, with their gaze patterns influenced by internal cognitive states. This makes eye movements a unique, non-invasive means of observing these states in humans. However, the direct connection between eye movements and underlying neural activity during natural viewing has not been thoroughly explored. To address this gap, researchers examined an open-source intracranial dataset involving 14 neurosurgical patients who watched an eight-minute movie while undergoing eye-tracking and simultaneous recording of neuronal activity. Single-neuron activity from 814 neurons across several brain regions were combined into a collective population and correlated with joint eye-movement state metrics, including pupil size, saccade rate, and fixation duration. A robust, multivariate statistical analysis revealed significant group-level coupling between the neural population and the joint eye-movement state (canonical r = 0.145; one-sample t-test p = 0.0003; 9 out of 14 subjects showed individual significance). This coupling was primarily driven by saccade dynamics (r = 0.141) and pupil size (r = 0.094), with fixation duration contributing less (r = 0.041). At the individual neuron level, the findings differed: a higher number of neurons exhibited eye-coupling than anticipated by chance, yet their individual impact was too weak to withstand correction for multiple comparisons. Despite the weak coupling, a coherent pattern emerged when considering the weakly coupled cells together, forming a reliable population dimension. Importantly, no single brain region's removal significantly diminished this pattern. This distributed, redundant organization of neural activity aligns more closely with the observed data than a small set of strongly coupled cells. Overall, the findings suggest that eye-tracking provides a valuable non-invasive tool for gaining insights into population-level neural states in humans during naturalistic viewing experiences.",
  "summary": "Our eyes move constantly. Where they land is shaped by internal cognitive state, making eye movements a rare, non-invasive window onto that state. However, how moment-to-moment eye-movements map onto human neural population activity during naturalistic viewing remains poorly characterized. We analyzed a public intracranial dataset in which 14 neurosurgical patients watched an eight-minute movie…",
  "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."
}