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Throughout the recording session, participants performed a psychomotor vigilance task (PVT), enabling investigation of the effects of rhythmic sensory stimulation on vigilance and neural activity.\",\n  \"methods_description\": \"Scalp EEG activity was recorded from healthy adults during one hour of either 40 Hz audiovisual flicker, no flicker control, or randomized flicker sham stimulation, while subjects performed a psychomotor vigilance task.\",\n  \"license\": \"CC0\",\n  \"dataset_type\": \"raw\",\n  \"authors\": {\n    \"Matthew Attokaren\": {},\n    \"Annabelle Singer\": {}\n  },\n  \"keywords\": [\n    {\n      \"term\": \"EEG\"\n    },\n    {\n      \"term\": \"Photic Stimulation\",\n      \"subject_scheme\": \"MeSH\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D010775\"\n    },\n    {\n      \"term\": \"psychomotor vigilance task\"\n    },\n    {\n      \"term\": \"40 Hz flicker\"\n    },\n    {\n      \"term\": \"audiovisual stimulation\"\n    },\n    {\n      \"term\": \"gamma entrainment\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/on007509\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataset/on007509\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"10.18112/openneuro.ds007509.v1.0.3\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDerivedFrom\"\n    }\n  ],\n  \"resource_type_specific\": \"EEG Dataset\",\n  \"modalities\": [\n    \"eeg\"\n  ],\n  \"sizes\": [\n    \"15.9 GB (141 files)\"\n  ],\n  \"formats\": [\n    \".fdt\",\n    \".json\",\n    \".md\",\n    \".set\",\n    \".tsv\",\n    \".yml\"\n  ],\n  \"source_hash\": \"84301a7f6f125e6764e5bacda6b2da4a2f1ed89e1ea336d82fb18675fb762bca\"\n}","last_activity_at":"2026-06-30 10:31:38","source":"openneuro","source_id":"ds007509","subject_count":69,"modalities":"eeg","age_min":18,"age_max":35,"file_size":15922784018,"total_files":360,"tasks":"PVT","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Matthew Attokaren, Annabelle Singer","license":"CC0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.on007509-blue)](https://doi.org/10.82901/nemar.on007509)\n\nWe recorded scalp EEG activity of healthy adults during one hour of either 40 Hz audiovisual flicker, no flicker as control, or randomized flicker as sham stimulation, while subjects performed a psychomotor vigilance task.","bids_version":"1.8.0","sessions_count":2,"publish_date":null,"embedding_dirty":0,"license_tier":"public","zarr_status":"failed","zarr_converted_at":null,"zarr_store_count":null,"zarr_index_etag":null,"zarr_source_commit":null,"archive_status":"ready","archive_size":11991130889,"archive_retry_count":0,"records_status":"ready","archive_skip_reason":null,"zarr_errors":70,"zarr_failure_count":70,"zarr_deterministic":1,"zarr_failed_at":"2026-08-23 04:03:34","num_dataset_citations":0,"num_datapaper_citations":0,"n_channels":32,"electrode_system":"10-10","has_hed":0,"hed_version":"8.1.0","is_exemplar":0,"bytes_present":15921293769,"data_complete":1,"withdrawn_at":null,"withdrawn_reason":null,"archive_complete":null,"archive_absent_files":null,"archive_declared_files":null,"zarr_pool_breaks":null,"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":512,"power_line_frequency":60,"eeg_reference":"CMS/DRL","placement_scheme":"10-20","sweep_stamps":"{\"enrichment_updated_at\":\"2026-08-18 23:47:32\",\"metadata_updated_at\":\"2026-08-18 23:47:51\",\"archive_checked_at\":\"2026-06-30 10:47:55\",\"zarr_checked_at\":null,\"records_checked_at\":\"2026-06-30 10:40:08\",\"citations_updated_at\":null,\"channel_montage_checked_at\":null,\"hed_checked_at\":null,\"data_checked_at\":\"2026-09-03 03:01:35\",\"availability_report_at\":\"2026-07-23 01:32:45\",\"recording_stats_at\":null,\"signal_defaults_at\":\"2026-09-02 12:55:14\"}","participants":69,"num_citations":0,"latest_version":"v1.0.0","zarr_verify_status":null,"zarr_verified_at":null,"owner_username":"nemarAdmin","owner_github":"nemarAdmin","file_size_formatted":"14.83 GB","zarr_data_failures":{"count":70,"detail_ref":"zarr/index.json","compacted_by":"migration_0074"},"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}}