{"dataset":{"id":"52505","dataset_id":"on003352","name":" ","description":"This dataset contains intracranial electrophysiological recordings acquired during visual stimulus presentation. Participants were exposed to eight spiral grating stimuli of varying colors and luminance levels, as well as color word stimuli, with each stimulus presented for 116 ms. The dataset includes event markers corresponding to each stimulus type, enabling investigation of neural responses to visual and linguistic stimuli.","owner_user_id":15,"status":"active","github_repo":"nemarDatasets/on003352","concept_doi":"10.82901/nemar.on003352","latest_version_doi":"10.82901/nemar.on003352.v1.0.0","created_at":"2026-06-21 18:01:05","updated_at":"2026-07-10 22:14:27","zenodo_concept_id":null,"is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"enriched\",\n  \"title\": \" \",\n  \"description\": \"This dataset contains intracranial electrophysiological recordings acquired during visual stimulus presentation. Participants were exposed to eight spiral grating stimuli of varying colors and luminance levels, as well as color word stimuli, with each stimulus presented for 116 ms. The dataset includes event markers corresponding to each stimulus type, enabling investigation of neural responses to visual and linguistic stimuli.\",\n  \"methods_description\": \"Visual stimuli consisting of eight square wave spiral gratings (10 degrees visual angle) and two color words were presented for 116 ms each. Stimuli included light and dark variants of pink, blue, green, and orange spirals, as well as the words 'blue' and 'green' displayed in white on a gray background. Intracranial electrophysiological (iEEG) recordings were acquired during stimulus presentation using implanted electrodes.\",\n  \"license\": \"CC0\",\n  \"dataset_type\": \"raw\",\n  \"authors\": {\n    \"Katherine Hermann\": {},\n    \"Isabelle Rosenthal\": {},\n    \"Shridhar R. Singh\": {},\n    \"Dimitrios Pantazis\": {},\n    \"Bevil R. Conway\": {}\n  },\n  \"keywords\": [\n    {\n      \"term\": \"intracranial electrophysiology\"\n    },\n    {\n      \"term\": \"iEEG\"\n    },\n    {\n      \"term\": \"visual perception\"\n    },\n    {\n      \"term\": \"spiral gratings\"\n    },\n    {\n      \"term\": \"event-related potentials\"\n    },\n    {\n      \"term\": \"color processing\"\n    },\n    {\n      \"term\": \"color words\"\n    },\n    {\n      \"term\": \"linguistic stimuli\"\n    },\n    {\n      \"term\": \"implanted electrodes\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"10.21105/joss.01896\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"References\"\n    },\n    {\n      \"identifier\": \"10.1038/s41597-019-0105-7\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"References\"\n    },\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/on003352\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataexplorer/detail?dataset_id=on003352\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"10.18112/openneuro.ds003352.v1.0.0\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDerivedFrom\"\n    }\n  ],\n  \"resource_type_specific\": \"MEG Dataset\",\n  \"modalities\": [\n    \"meg\"\n  ],\n  \"sizes\": [\n    \"230.1 GB (139 files)\"\n  ],\n  \"formats\": [\n    \".fif\",\n    \".gitattributes\",\n    \".json\",\n    \".md\",\n    \".tsv\",\n    \".yml\"\n  ],\n  \"source_hash\": \"7d2ff72b7f166211c84f9e1305e46c5a95ca1d9f79e7337a1d2dd5788bb66aa3\"\n}","last_activity_at":"2026-06-21 18:01:05","source":"openneuro","source_id":"ds003352","subject_count":18,"modalities":"meg","age_min":17,"age_max":26,"file_size":230092823435,"total_files":634,"tasks":"ColorSpirals","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Katherine Hermann, Isabelle Rosenthal, Shridhar R. Singh, Dimitrios Pantazis, Bevil R. Conway","license":"CC0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.on003352-blue)](https://doi.org/10.82901/nemar.on003352)\n\nStimuli include eight different square wave spiral gratings subtending 10 degrees of visual angle as well as the color words \"blue\" and \"green.\" The color words appeared as white on a gray background. Each stimulus appeared on the screen for 116 ms. The triggers or event ID's of each stimulus are as follows:\n\n1 - Light Pink Spiral\n2 - Dark Pink Spiral\n3 - Light Blue Spiral\n4 - Dark Blue Spiral\n5 - Light Green Spiral\n6 - Dark Green Spiral\n7 - Light Orange Spiral\n8 - Dark Orange Spiral\n9 - \"green\"\n10 - \"blue\"","bids_version":"1.2.2","sessions_count":2,"publish_date":null,"embedding_dirty":0,"license_tier":"public","zarr_status":"ready","zarr_converted_at":"2026-09-08 01:58:45","zarr_store_count":128,"zarr_index_etag":"14dabe1a9157a72d634af7963b890ce9","zarr_source_commit":"c53ed1a9dd52e29d709643796f70fa0a6db464eb","archive_status":null,"archive_size":null,"archive_retry_count":0,"records_status":"ready","archive_skip_reason":"dataset 214.3 GB exceeds 100.0 GB archive limit; use direct download","zarr_errors":10,"zarr_failure_count":4,"zarr_deterministic":0,"zarr_failed_at":"2026-09-08 01:58:45","num_dataset_citations":1,"num_datapaper_citations":0,"n_channels":null,"electrode_system":null,"has_hed":0,"hed_version":null,"is_exemplar":0,"bytes_present":230084268551,"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":172390,"recording_duration_min":26,"recording_duration_max":1592,"recording_count":138,"recordings_unavailable":10,"recordings_measured":128,"channel_count_min":323,"channel_count_max":323,"sampling_frequency":null,"power_line_frequency":null,"eeg_reference":null,"placement_scheme":null,"sweep_stamps":"{\"enrichment_updated_at\":\"2026-06-21 18:12:35\",\"metadata_updated_at\":\"2026-06-21 18:12:45\",\"archive_checked_at\":\"2026-06-21 18:13:19\",\"zarr_checked_at\":null,\"records_checked_at\":\"2026-06-21 18:14:01\",\"citations_updated_at\":\"2026-09-08 03:00:52\",\"channel_montage_checked_at\":null,\"hed_checked_at\":\"2026-06-30 04:41:34\",\"data_checked_at\":\"2026-07-30 03:01:10\",\"availability_report_at\":\"2026-07-23 01:13:28\",\"signal_defaults_at\":\"2026-09-02 11:58:19\",\"recording_stats_at\":\"2026-09-08 03:00:54\"}","participants":18,"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":"214 GB","zarr_data_failures":{"count":4,"detail_ref":"zarr/index.json","pending":6,"discovered":138},"zarr_index_url":"https://zarr.nemar.org/on003352/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}}