{"dataset":{"id":"61176","dataset_id":"on006547","name":"Visual EEG Study (BrainVision → BIDS)","description":"This dataset comprises high-density electroencephalography (EEG) recordings acquired during a visual stimulation task from human participants. Data were collected in a single session and organized according to the EEG-BIDS specification, with raw recordings stored in BrainVision format. The dataset provides raw, unfiltered EEG signals suitable for subsequent offline preprocessing and analysis of visual evoked responses.","owner_user_id":15,"status":"active","github_repo":"nemarDatasets/on006547","concept_doi":"10.82901/nemar.on006547","latest_version_doi":"10.82901/nemar.on006547.v1.0.0","created_at":"2026-06-29 04:01:43","updated_at":"2026-08-19 00:33:23","zenodo_concept_id":null,"is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"validated\",\n  \"title\": \"Visual EEG Study (BrainVision → BIDS)\",\n  \"description\": \"This dataset comprises high-density electroencephalography (EEG) recordings acquired during a visual stimulation task from human participants. Data were collected in a single session and organized according to the EEG-BIDS specification, with raw recordings stored in BrainVision format. The dataset provides raw, unfiltered EEG signals suitable for subsequent offline preprocessing and analysis of visual evoked responses.\",\n  \"license\": \"CC0\",\n  \"dataset_type\": \"raw\",\n  \"authors\": {\n    \"Sanaz Ghaffari\": {},\n    \"Arian Yavari\": {},\n    \"Sara Bonyadian\": {},\n    \"Arsalan Ghofrani\": {},\n    \"Russell Butler\": {}\n  },\n  \"keywords\": [\n    {\n      \"term\": \"EEG\"\n    },\n    {\n      \"term\": \"visual evoked potentials\"\n    },\n    {\n      \"term\": \"BrainVision\"\n    },\n    {\n      \"term\": \"BIDS\"\n    },\n    {\n      \"term\": \"visual stimulation\"\n    },\n    {\n      \"term\": \"high-density EEG\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"10.18112/openneuro.ds006547.v1.0.0\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDerivedFrom\"\n    },\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/on006547\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataset/on006547\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    }\n  ],\n  \"resource_type_general\": \"Dataset\",\n  \"resource_type_specific\": \"EEG Dataset\",\n  \"modalities\": [\n    \"eeg\"\n  ],\n  \"sizes\": [\n    \"18.9 GB (94 files)\"\n  ],\n  \"formats\": [\n    \".eeg\",\n    \".json\",\n    \".md\",\n    \".tsv\",\n    \".vhdr\",\n    \".vmrk\",\n    \".yml\"\n  ],\n  \"methods_description\": \"EEG data were recorded using BrainVision hardware (.vhdr/.vmrk/.eeg files) during a visual stimulation task in a single session (ses-01). No acquisition-time filters were applied; the dataset represents raw data prior to offline preprocessing.\",\n  \"source_hash\": \"928db4e52aee2084a31d55c221ea9d941d669c7ac239c744e86d602c5862498e\"\n}","last_activity_at":"2026-06-29 04:01:43","source":"openneuro","source_id":"ds006547","subject_count":31,"modalities":"eeg","age_min":null,"age_max":null,"file_size":18921503849,"total_files":165,"tasks":"visual","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Sanaz Ghaffari, Arian Yavari, Sara Bonyadian, Arsalan Ghofrani, Russell Butler","license":"CC0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.on006547-blue)](https://doi.org/10.82901/nemar.on006547)\n\nThis dataset contains high-density EEG recordings collected during a visual stimulation task.\nFiles are organized according to the EEG-BIDS specification. Raw data are BrainVision (.vhdr/.vmrk/.eeg).\nTask: visual\nSession: ses-01\n\nProvenance: Converted from c:/shared/raw_eeg with this helper script.\nNo acquisition-time filters applied (offline preprocessing not included here).\n","bids_version":"1.9.0","sessions_count":1,"publish_date":null,"embedding_dirty":0,"license_tier":"public","zarr_status":"ready","zarr_converted_at":"2026-08-24 07:55:26","zarr_store_count":31,"zarr_index_etag":"c737846ecedb3ec0c4c35798b54daf67","zarr_source_commit":"8cabae4c680ed227abe3ebfd5078e6a1b38f3219","archive_status":"ready","archive_size":13707179329,"archive_retry_count":0,"records_status":"ready","archive_skip_reason":null,"zarr_errors":0,"zarr_failure_count":0,"zarr_deterministic":0,"zarr_failed_at":null,"num_dataset_citations":1,"num_datapaper_citations":0,"n_channels":64,"electrode_system":null,"has_hed":0,"hed_version":null,"is_exemplar":0,"bytes_present":18920670381,"data_complete":1,"withdrawn_at":null,"withdrawn_reason":null,"archive_complete":null,"archive_absent_files":null,"archive_declared_files":null,"zarr_pool_breaks":0,"total_recording_duration":141191.62,"recording_duration_min":2251.16,"recording_duration_max":9953.18,"recording_count":31,"recordings_unavailable":0,"recordings_measured":31,"channel_count_min":67,"channel_count_max":67,"sampling_frequency":500,"power_line_frequency":60,"eeg_reference":"FCz","placement_scheme":null,"sweep_stamps":"{\"enrichment_updated_at\":\"2026-08-19 00:33:07\",\"metadata_updated_at\":\"2026-08-19 00:33:22\",\"archive_checked_at\":\"2026-06-29 04:19:41\",\"zarr_checked_at\":null,\"records_checked_at\":\"2026-06-29 04:13:48\",\"citations_updated_at\":\"2026-09-08 03:00:53\",\"channel_montage_checked_at\":null,\"hed_checked_at\":\"2026-06-30 05:35:40\",\"data_checked_at\":\"2026-08-28 03:00:30\",\"availability_report_at\":\"2026-07-23 01:29:36\",\"recording_stats_at\":\"2026-09-02 11:33:43\",\"signal_defaults_at\":\"2026-09-02 12:47:02\"}","participants":31,"num_citations":1,"latest_version":"v1.0.0","zarr_verify_status":null,"zarr_verified_at":null,"owner_username":"nemarAdmin","owner_github":"nemarAdmin","file_size_formatted":"17.62 GB","zarr_data_failures":null,"zarr_index_url":"https://zarr.nemar.org/on006547/zarr/index.json","attestation_deposit_type":null,"attestation_key_status":null,"attestation_deidentified":null,"attestation_no_duplicate":null,"attestation_upstream_source":null,"attestation_accepted_at":null}}