{"dataset":{"id":"61255","dataset_id":"nm000276","name":"SWEC iEEG Dataset","description":"This dataset contains long-term pre-surgical intracranial EEG (iEEG) recordings from 40 patients with pharmacoresistant epilepsy, collected at the Sleep-Wake-Epilepsy-Center (SWEC), University of Bern, in collaboration with ETH Zurich. It comprises approximately 5376 hours of continuous iEEG recorded via strip, grid, and depth electrodes, with 381 annotated electrographic seizures marked by a board-certified epileptologist. The dataset is fully anonymized, with channel and electrode location information withheld to protect patient identity, and is structured in BIDS format for long-term monitoring analysis.","owner_user_id":19,"status":"active","github_repo":"nemarDatasets/nm000276","concept_doi":"10.82901/nemar.nm000276","latest_version_doi":"10.82901/nemar.nm000276.v1.0.0","created_at":"2026-06-30 19:57:51","updated_at":"2026-08-18 23:33:06","zenodo_concept_id":null,"is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"enriched\",\n  \"title\": \"SWEC iEEG Dataset\",\n  \"description\": \"This dataset contains long-term pre-surgical intracranial EEG (iEEG) recordings from 40 patients with pharmacoresistant epilepsy, collected at the Sleep-Wake-Epilepsy-Center (SWEC), University of Bern, in collaboration with ETH Zurich. It comprises approximately 5376 hours of continuous iEEG recorded via strip, grid, and depth electrodes, with 381 annotated electrographic seizures marked by a board-certified epileptologist. The dataset is fully anonymized, with channel and electrode location information withheld to protect patient identity, and is structured in BIDS format for long-term monitoring analysis.\",\n  \"methods_description\": \"iEEG was recorded using intracranial strip, grid, and depth electrodes with 16-bit analog-to-digital conversion at sampling rates of 512 Hz or 1024 Hz per subject. Data were digitally band-pass filtered from 0.5-150 Hz using a 4th-order Butterworth zero-phase filter, referenced to the median across channels, and channels with artifacts were removed at the source. Seizure onsets and offsets were manually annotated by a board-certified epileptologist.\",\n  \"license\": \"CDLA-Permissive-2.0\",\n  \"dataset_type\": \"raw\",\n  \"authors\": {\n    \"Francesco Carzaniga\": {},\n    \"Michael Hersche\": {},\n    \"Abu Sebastian\": {},\n    \"Kaspar Schindler\": {},\n    \"Abbas Rahimi\": {}\n  },\n  \"keywords\": [\n    {\n      \"term\": \"Electroencephalography\",\n      \"subject_scheme\": \"MeSH\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D004569\"\n    },\n    {\n      \"term\": \"Epilepsy\",\n      \"subject_scheme\": \"MeSH\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D004827\"\n    },\n    {\n      \"term\": \"intracranial EEG\"\n    },\n    {\n      \"term\": \"seizure detection\"\n    },\n    {\n      \"term\": \"long-term monitoring\"\n    },\n    {\n      \"term\": \"BIDS\"\n    },\n    {\n      \"term\": \"SEEG\"\n    },\n    {\n      \"term\": \"anonymized electrode locations\"\n    },\n    {\n      \"term\": \"foundation model\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"10.48550/arXiv.2506.20354\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/nm000276\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataset/nm000276\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    }\n  ],\n  \"resource_type_general\": \"Dataset\",\n  \"resource_type_specific\": \"iEEG Dataset\",\n  \"modalities\": [\n    \"ieeg\"\n  ],\n  \"sizes\": [\n    \"3.3 TB (3089 files)\"\n  ],\n  \"formats\": [\n    \".eeg\",\n    \".json\",\n    \".md\",\n    \".tsv\",\n    \".vhdr\",\n    \".vmrk\",\n    \".yml\"\n  ],\n  \"source_hash\": \"7c5e8b371a58f594ea45db632aa6bc1afe2ce278c4989e52851a473c7fc5f1c4\"\n}","last_activity_at":"2026-07-02 02:17:59","source":null,"source_id":null,"subject_count":40,"modalities":"ieeg","age_min":null,"age_max":null,"file_size":3254808175422,"total_files":368,"tasks":"ltm","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Francesco Carzaniga, Michael Hersche, Abu Sebastian, Kaspar Schindler, Abbas Rahimi","license":"CDLA-Permissive-2.0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.nm000276-blue)](https://doi.org/10.82901/nemar.nm000276)\n\n# SWEC iEEG Dataset (BIDS)\n\nLong-term pre-surgical intracranial EEG (iEEG) from patients with\npharmacoresistant epilepsy, recorded at the Sleep-Wake-Epilepsy-Center (SWEC),\nDepartment of Neurology, Inselspital, University of Bern, in collaboration with\nthe Integrated Systems Laboratory, ETH Zurich.\n\n## Contents\n- Subjects: 40\n- Total recording: 5376 hours of continuous iEEG\n- Annotated electrographic seizures: 381\n- Task label: `ltm` (long-term monitoring; passive, no task)\n- Format: BrainVision (IEEE float32), data in microvolts (µV)\n\n## Recording & preprocessing (at source)\n- Intracranial strip, grid, and depth electrodes (mixed).\n- 16-bit analog-to-digital conversion.\n- Sampling rate 512 Hz or 1024 Hz (per subject; see participants.tsv).\n- Digitally band-pass filtered 0.5-150 Hz (4th-order Butterworth, forward-backward / zero-phase).\n- Channels with artifacts were removed at the source; remaining channels marked `good`.\n- Median reference across channels (per the SWEC-ETHZ long-term protocol).\n- Seizure onsets/offsets annotated by board-certified epileptologist Prof. Kaspar Schindler.\n\n## Anonymization — channels & electrodes\nThe public SWEC release is FULLY ANONYMIZED. Anatomical channel labels and\nelectrode locations are NOT disclosed (electrode coordinates + the implied\nimaging would be re-identifying for epilepsy-surgery patients). Channels are\ntherefore named `iEEG01..iEEGNN`, preserving the original recording order\n(1:1 with the source channel index 0..N-1). `electrodes.tsv` lists every\ncontact with coordinates set to `n/a`, and channel type is recorded as the\ngeneric intracranial `SEEG` (the per-contact strip/grid/depth type is not\ndisclosed). No locations were fabricated.\n\n## Provenance\nConverted to BIDS from the public HDF5 release at\nhttps://mb-neuro.medical-blocks.ch/public_access/databases/ieeg/swec_ieeg\n(authentic medical-blocks / artorg source). This BIDS dataset re-hosts the\n40-subject / 378-file public subset.\n\n## How to cite\nCarzaniga, F., Hersche, M., Sebastian, A., Schindler, K. & Rahimi, A.\n\"A foundation model with multi-variate parallel attention to generate neuronal\nactivity.\" arXiv:2506.20354 (2025). https://doi.org/10.48550/arXiv.2506.20354\nSWEC-ETHZ iEEG Database: http://ieeg-swez.ethz.ch/\n\n## License\nCommunity Data License Agreement – Permissive, Version 2.0 (CDLA-Permissive-2.0).\n","bids_version":"1.9.0","sessions_count":null,"publish_date":null,"embedding_dirty":0,"license_tier":"unknown","zarr_status":"failed","zarr_converted_at":null,"zarr_store_count":null,"zarr_index_etag":null,"zarr_source_commit":null,"archive_status":null,"archive_size":null,"archive_retry_count":0,"records_status":"ready","archive_skip_reason":"dataset 3031.3 GB exceeds 100.0 GB archive limit; use direct download","zarr_errors":40,"zarr_failure_count":0,"zarr_deterministic":0,"zarr_failed_at":"2026-08-27 23:39:01","num_dataset_citations":0,"num_datapaper_citations":2,"n_channels":null,"electrode_system":null,"has_hed":0,"hed_version":null,"is_exemplar":0,"bytes_present":3254807628854,"data_complete":0,"withdrawn_at":null,"withdrawn_reason":null,"archive_complete":null,"archive_absent_files":null,"archive_declared_files":null,"zarr_pool_breaks":0,"total_recording_duration":null,"recording_duration_min":null,"recording_duration_max":null,"recording_count":null,"recordings_unavailable":null,"recordings_measured":null,"channel_count_min":null,"channel_count_max":null,"sampling_frequency":null,"power_line_frequency":null,"eeg_reference":null,"placement_scheme":null,"sweep_stamps":"{\"enrichment_updated_at\":\"2026-08-18 23:32:45\",\"metadata_updated_at\":\"2026-08-18 23:33:03\",\"archive_checked_at\":\"2026-07-10 16:28:41\",\"zarr_checked_at\":null,\"records_checked_at\":\"2026-07-10 16:29:36\",\"citations_updated_at\":\"2026-09-10 03:00:19\",\"channel_montage_checked_at\":null,\"hed_checked_at\":null,\"data_checked_at\":null,\"availability_report_at\":\"2026-07-23 01:10:27\",\"recording_stats_at\":null,\"signal_defaults_at\":\"2026-09-02 11:51:11\"}","participants":40,"num_citations":2,"latest_version":"v1.0.0","zarr_verify_status":null,"zarr_verified_at":null,"owner_username":"bruaristimunha","owner_github":"bruAristimunha","file_size_formatted":"2.96 TB","zarr_data_failures":null,"zarr_index_url":null,"attestation_deposit_type":null,"attestation_key_status":null,"attestation_deidentified":null,"attestation_no_duplicate":null,"attestation_upstream_source":null,"attestation_accepted_at":null}}