{
  "id": 7083261,
  "title": "Cortical high frequency oscillations reflect encoding and retrieval of specific word concepts",
  "url": "https://urgent.news/2026/09/13/cortical-high-frequency-oscillations-reflect-encoding-and-retrieval",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-13T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.11.750906v1?rss=1"
  },
  "original_language": "en",
  "account": "High gamma and ripple frequency oscillations in the human cortex are linked to the encoding and retrieval of specific word concepts, according to a study using intracranial electrode recordings from epilepsy patients. By analyzing bursts of high-frequency oscillations in response to viewing and remembering common nouns in two different tasks, the researchers found that selectivity for a particular word varied from approximately 40% in visual sensory areas to higher levels in more anterior associational regions. The same word sets that were preferred in a screening task also triggered selective responses in another task during visual presentation or free recall, even without sensory stimulation. This persistence of reactivation of large-scale neuronal assemblies for specific concepts was observed both during the same session and on the following day, demonstrating that bursts of high-frequency oscillations in the cortex reflect the encoding and retrieval of distinct word concepts.",
  "summary": "High gamma and ripple frequency oscillations are engaged in encoding and recall of memory traces. Tracking specific traces with their signature neural activities across time and various tasks remains a major challenge. Using intracranial electrode recordings from epilepsy patients, we detected bursts of high-frequency oscillations in response to viewing and remembering the same common nouns in…",
  "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."
}