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    "story_id": "mp-2026-09-09-011",
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    "headline": "Seven Thousand Hours Joined Brain-Surface Signals to Spikes",
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    "dek": "iBrain jointly pretrained on intracranial EEG and intracortical spiking with signal-specific encoders and one shared temporal backbone.",
    "summary": "iBrain jointly pretrained on intracranial EEG and intracortical spiking with signal-specific encoders and one shared temporal backbone.",
    "body_text": "Most neural foundation models specialize in one recording type. iBrain instead uses separate encoders for intracranial EEG and intracortical spike trains, followed by a shared spatiotemporal transformer trained with masked reconstruction and channel-view alignment. The pretraining corpus contains more than 7,000 hours of heterogeneous invasive recordings. Across the reported benchmarks, the joint model outperformed single-signal pretraining baselines and transferred with improved data efficiency across recording settings. These are research benchmarks on invasive recordings, not evidence that the model can read thoughts or support unsupervised clinical decisions.",
    "why_it_matters": "iBrain jointly pretrained on intracranial EEG and intracortical spiking with signal-specific encoders and one shared temporal backbone.",
    "limitations": [
      "These are research benchmarks on invasive recordings, not evidence that the model can read thoughts or support unsupervised clinical decisions."
    ],
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    "first_published_at": "2026-09-09T09:00:00.000-04:00",
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        "text": "iBrain jointly pretrained on intracranial EEG and intracortical spiking with signal-specific encoders and one shared temporal backbone.",
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        "qualification": "These are research benchmarks on invasive recordings, not evidence that the model can read thoughts or support unsupervised clinical decisions."
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    "tags": [
      "neural recordings",
      "foundation models",
      "intracranial EEG"
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  "sources": [
    {
      "source_id": "source-2026-09-09-011",
      "title": "arXiv preprint 2609.06960",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2609.06960",
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      "published_at": "2026-09-06T22:56:42.000-04:00",
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    "title": "Seven Thousand Hours Joined Brain-Surface Signals to Spikes",
    "publisher": "The Machine Press",
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