{
  "schemaVersion": "2.0.0",
  "identity": {
    "slug": "egi-geodesic-256",
    "manufacturerSlug": "egi",
    "name": {
      "value": "Geodesic Sensor Net 256",
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "modelNumber": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "codename": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "aliases": {
      "value": [
        "EGI HCGSN 256",
        "EGI Net Amps 300"
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        },
        {
          "url": "https://www.imaging.psu.edu/facilities/human-electrophysiology/hydroccel-geodesic-sensor-net-hcgsn",
          "label": "Penn State SLEIC — HydroCel Geodesic Sensor Net description"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "generation": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "predecessorSlug": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "successorSlug": {
      "value": "egi-geodesic-400",
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "tagline": {
      "status": "unknown",
      "sources": [
        {
          "label": "editorial copy — not a sourced fact"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "shortDescription": {
      "status": "unknown",
      "sources": [
        {
          "label": "editorial prose — not a sourced fact"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "longDescription": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "countryOfOrigin": {
      "value": "US",
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "releaseDate": {
      "status": "unknown",
      "sources": [
        {
          "label": "v0 said 2008; not pinned in primary EGI sources"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "announcedDate": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "discontinuedDate": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "status": {
      "value": "shipping",
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    }
  },
  "classification": {
    "invasiveness": {
      "value": "non-invasive",
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "modalities": {
      "value": [
        "EEG"
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "primaryModality": {
      "value": "EEG",
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "direction": {
      "value": "read",
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "category": {
      "value": [
        "research-grade",
        "clinical-grade"
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "formFactor": {
      "value": [
        "scalp-cap"
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "intendedUseCases": {
      "value": [
        "high-density EEG / ERP research",
        "infant / pediatric EEG (HCGSN sizing from neonate to adult)"
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        },
        {
          "url": "https://www.imaging.psu.edu/facilities/human-electrophysiology/hydroccel-geodesic-sensor-net-hcgsn",
          "label": "Penn State SLEIC — HydroCel Geodesic Sensor Net description"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "targetUsers": {
      "value": [
        "neuroscience-researcher",
        "clinician"
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    }
  },
  "electrodes": {
    "totalChannels": {
      "value": 256,
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "recordingChannels": {
      "value": 256,
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "referenceChannels": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "electrodeType": {
      "value": [
        "wet-saline"
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.imaging.psu.edu/facilities/human-electrophysiology/hydroccel-geodesic-sensor-net-hcgsn",
          "label": "Penn State SLEIC — HydroCel Geodesic Sensor Net description"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "material": {
      "value": [
        "Ag/AgCl-pellet",
        "sponge"
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.imaging.psu.edu/facilities/human-electrophysiology/hydroccel-geodesic-sensor-net-hcgsn",
          "label": "Penn State SLEIC — HydroCel Geodesic Sensor Net description"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "positions1020": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "channels": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "requiresGel": {
      "value": false,
      "status": "verified",
      "sources": [
        {
          "url": "https://www.imaging.psu.edu/facilities/human-electrophysiology/hydroccel-geodesic-sensor-net-hcgsn",
          "label": "Penn State SLEIC — HydroCel Geodesic Sensor Net description"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "requiresSaline": {
      "value": true,
      "status": "verified",
      "sources": [
        {
          "url": "https://www.imaging.psu.edu/facilities/human-electrophysiology/hydroccel-geodesic-sensor-net-hcgsn",
          "label": "Penn State SLEIC — HydroCel Geodesic Sensor Net description"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "prepTimeMinutes": {
      "value": {
        "typical": 15
      },
      "status": "verified",
      "sources": [
        {
          "url": "https://www.imaging.psu.edu/facilities/human-electrophysiology/hydroccel-geodesic-sensor-net-hcgsn",
          "label": "Penn State SLEIC — HydroCel Geodesic Sensor Net description"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "reusable": {
      "value": true,
      "status": "verified",
      "sources": [
        {
          "url": "https://www.imaging.psu.edu/facilities/human-electrophysiology/hydroccel-geodesic-sensor-net-hcgsn",
          "label": "Penn State SLEIC — HydroCel Geodesic Sensor Net description"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "disposable": {
      "value": false,
      "status": "verified",
      "sources": [
        {
          "url": "https://www.imaging.psu.edu/facilities/human-electrophysiology/hydroccel-geodesic-sensor-net-hcgsn",
          "label": "Penn State SLEIC — HydroCel Geodesic Sensor Net description"
        }
      ],
      "updatedAt": "2026-05-04"
    }
  },
  "acquisition": {
    "samplingRateHz": {
      "status": "unknown",
      "sources": [
        {
          "label": "v0 said 1 kHz; not pinned in primary EGI sources for HCGSN 256"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "resolutionBits": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "notchFiltersHz": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "onboardArtifactRejection": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    }
  },
  "stimulation": {
    "capable": {
      "value": false,
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    }
  },
  "connectivity": {
    "protocols": {
      "value": [
        "ethernet"
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "bluetoothVersion": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "bluetoothProfiles": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "concurrentMode": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "encryptionInTransit": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "pairingMethods": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "cloudSync": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "offlineRecording": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    }
  },
  "power": {
    "sources": {
      "value": [
        "wired"
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "batteryLifeActiveHours": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "chargingPort": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "chargingTimeMinutes": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "batteryReplaceable": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "notes": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    }
  },
  "software": {
    "apps": {
      "value": [
        {
          "name": "Net Station",
          "platforms": [
            "windows"
          ],
          "free": false
        }
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "mobileApp": {
      "value": false,
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "cloudPlatform": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "offlineMode": {
      "value": true,
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "subscriptionRequired": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "rawDataAccess": {
      "value": true,
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "exportFormats": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "lslSupport": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "dataOwnership": {
      "value": "user",
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "privacyPolicyUrl": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    }
  },
  "sdk": {
    "hasSdk": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "docsUrl": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "openSource": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "languages": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "webBluetooth": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "rawSampleAccess": {
      "value": true,
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "bciParadigms": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "thirdPartyIntegrations": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    }
  },
  "regulatory": {
    "fdaStatus": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "ceMark": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "certifications": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "prescriptionRequired": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "pediatricApproved": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    }
  },
  "pricing": {
    "msrp": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "currentPrice": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "subscription": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "buyUrls": {
      "value": [
        {
          "region": "global",
          "vendor": "EGI",
          "url": "https://www.egi.com/research-division/geodesic-sensor-net"
        }
      ],
      "status": "verified",
      "sources": [
        {
          "url": "https://www.egi.com/research-division/geodesic-sensor-net",
          "label": "EGI — Geodesic Sensor Net product page"
        }
      ],
      "updatedAt": "2026-05-04"
    },
    "warranty": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    },
    "returnPolicyDays": {
      "status": "unknown",
      "updatedAt": "2026-05-04"
    }
  },
  "editorial": {
    "pros": [
      "Sponge-based saline electrodes — no gel needed",
      "Sizes from neonate to adult",
      "256 channels at ≤15 min setup"
    ],
    "cons": [
      "Damp wear time limited to ~12 h with HydroCel",
      "Higher per-net consumable cost than gel caps"
    ],
    "bestFor": [],
    "notFor": [],
    "comparableDevices": [
      "egi-geodesic-400",
      "brainproducts-r-net"
    ]
  },
  "provenance": {
    "sources": [
      {
        "label": "EGI — Geodesic Sensor Net product page",
        "url": "https://www.egi.com/research-division/geodesic-sensor-net"
      },
      {
        "label": "Penn State SLEIC — HCGSN description",
        "url": "https://www.imaging.psu.edu/facilities/human-electrophysiology/hydroccel-geodesic-sensor-net-hcgsn"
      },
      {
        "label": "EGI — Geodesic Sensor Net technical manual",
        "url": "https://med.stanford.edu/content/dam/sm/lucasmri/documents/16_0824_EGI_geodesic_sensor_net.pdf"
      }
    ],
    "lastReviewedAt": "2026-05-07"
  }
}