{"dataset":{"id":"59030","dataset_id":"on004837","name":"Magnetoencephalographic (MEG) Pitch and Duration Mismatch Negativity (MMN) in First-Episode Psychosis","description":"This magnetoencephalographic (MEG) dataset comprises auditory oddball paradigm recordings from participants with first-episode psychosis and healthy controls, designed to investigate mismatch negativity (MMN) responses to pitch and duration deviants. The study includes three participant groups: healthy controls, first-episode schizophrenia, and first-episode affective psychosis patients. Data were collected as part of the Pittsburgh Early Psychosis Program between December 2017 and September 2021. The dataset includes clinical, neuropsychological, demographic, and medication data in the derivatives.","owner_user_id":15,"status":"active","github_repo":"nemarDatasets/on004837","concept_doi":"10.82901/nemar.on004837","latest_version_doi":"10.82901/nemar.on004837.v1.0.0","created_at":"2026-06-25 16:31:42","updated_at":"2026-07-10 22:39:44","zenodo_concept_id":null,"is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"enriched\",\n  \"title\": \"Magnetoencephalographic (MEG) Pitch and Duration Mismatch Negativity (MMN) in First-Episode Psychosis\",\n  \"description\": \"This magnetoencephalographic (MEG) dataset comprises auditory oddball paradigm recordings from participants with first-episode psychosis and healthy controls, designed to investigate mismatch negativity (MMN) responses to pitch and duration deviants. The study includes three participant groups: healthy controls, first-episode schizophrenia, and first-episode affective psychosis patients. Data were collected as part of the Pittsburgh Early Psychosis Program between December 2017 and September 2021. The dataset includes clinical, neuropsychological, demographic, and medication data in the derivatives.\",\n  \"methods_description\": \"MEG recordings were acquired during an auditory oddball paradigm featuring standard tones, pitch deviants, and duration deviants. Participant groups included healthy controls (HC), first-episode schizophrenia (FESZ), and first-episode affective psychosis (FEAFF) patients. Clinical, neuropsychological, demographic, and medication data are provided in the derivatives.\",\n  \"license\": \"CC0\",\n  \"dataset_type\": \"raw\",\n  \"authors\": {\n    \"Fran López-Caballero\": {},\n    \"Mark Curtis\": {},\n    \"Brian Coffman\": {},\n    \"Dean Salisbury\": {}\n  },\n  \"keywords\": [\n    {\n      \"term\": \"Magnetoencephalography\",\n      \"subject_scheme\": \"MeSH\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D015225\"\n    },\n    {\n      \"term\": \"mismatch negativity\",\n      \"subject_scheme\": \"MeSH\"\n    },\n    {\n      \"term\": \"psychosis\",\n      \"subject_scheme\": \"MeSH\"\n    },\n    {\n      \"term\": \"auditory oddball paradigm\"\n    },\n    {\n      \"term\": \"first-episode psychosis\"\n    },\n    {\n      \"term\": \"Schizophrenia\",\n      \"subject_scheme\": \"MeSH\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D012559\"\n    },\n    {\n      \"term\": \"Pittsburgh Early Psychosis Program\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/on004837\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataexplorer/detail?dataset_id=on004837\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"10.1111/ejn.16107\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"10.18112/openneuro.ds004837.v1.0.2\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDerivedFrom\"\n    }\n  ],\n  \"funding_references\": [\n    {\n      \"funder_name\": \"NIH\",\n      \"award_number\": \"R01 MH108568\"\n    },\n    {\n      \"funder_name\": \"NIH\",\n      \"award_number\": \"R01 MH113533\"\n    }\n  ],\n  \"resource_type_specific\": \"Structural MRI Dataset\",\n  \"modalities\": [\n    \"anat\",\n    \"meg\"\n  ],\n  \"sizes\": [\n    \"128.8 GB (170 files)\"\n  ],\n  \"formats\": [\n    \".csv\",\n    \".fif\",\n    \".gz\",\n    \".json\",\n    \".mat\",\n    \".md\",\n    \".tsv\",\n    \".yml\"\n  ],\n  \"source_hash\": \"658da9faa1b984ed76e6e620bd826265dbfb5fc3de040769489aa333025707a9\"\n}","last_activity_at":"2026-06-25 16:31:42","source":"openneuro","source_id":"ds004837","subject_count":60,"modalities":"anat,meg","age_min":null,"age_max":null,"file_size":128779424102,"total_files":342,"tasks":"attnmod","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Fran López-Caballero, Mark Curtis, Brian Coffman, Dean Salisbury","license":"CC0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.on004837-blue)](https://doi.org/10.82901/nemar.on004837)\n\nProject Title: Pittsburgh Early Psychosis Program (PEPP): Mismatch Negativity (MMN) in First-Episode Psychosis\n\nExpected experimentation period:\nStart date: 12/01/2017\nEnd date: 09/15/2021\n\nProject Description:\nOddball paradigm with standards, pitch deviants and duration deviants. Extended description at: https://doi.org/10.1111/ejn.16107\n\nParticipant categories:\nHealthy controls (HC), First-episode Schizophrenia (FESZ), First-episode Affective Psychosis (FEAFF)\nFurther information about clinical, neuropsychological, demographic and medication data can be found in derivatives/participants.csv\n\nEvents:\n1: standard\n2: pitch deviant\n3: duration deviant\n\nFunding: \nNational Institutes of Health (R01 MH108568 and MH113533)","bids_version":"1.1.1","sessions_count":1,"publish_date":null,"embedding_dirty":0,"license_tier":"public","zarr_status":"ready","zarr_converted_at":"2026-08-07 18:09:08","zarr_store_count":59,"zarr_index_etag":"dfe73ff13af503a581eb95d56aff8bed","zarr_source_commit":"eed65baa98558fc0bb190ddd667a5334295365c6","archive_status":null,"archive_size":null,"archive_retry_count":0,"records_status":null,"archive_skip_reason":"dataset 119.9 GB exceeds 100.0 GB archive limit; use direct download","zarr_errors":47,"zarr_failure_count":47,"zarr_deterministic":1,"zarr_failed_at":"2026-08-07 18:09:08","num_dataset_citations":2,"num_datapaper_citations":8,"n_channels":null,"electrode_system":null,"has_hed":0,"hed_version":null,"is_exemplar":0,"bytes_present":128779385292,"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":9768.5,"recording_duration_min":38.5,"recording_duration_max":523,"recording_count":106,"recordings_unavailable":47,"recordings_measured":59,"channel_count_min":324,"channel_count_max":385,"sampling_frequency":null,"power_line_frequency":null,"eeg_reference":null,"placement_scheme":null,"sweep_stamps":"{\"enrichment_updated_at\":\"2026-06-25 16:44:23\",\"metadata_updated_at\":\"2026-06-25 16:44:37\",\"archive_checked_at\":\"2026-06-25 16:44:37\",\"zarr_checked_at\":null,\"records_checked_at\":null,\"citations_updated_at\":\"2026-09-08 03:00:49\",\"channel_montage_checked_at\":null,\"hed_checked_at\":\"2026-06-30 05:07:07\",\"data_checked_at\":\"2026-08-15 03:00:28\",\"availability_report_at\":\"2026-07-23 01:21:12\",\"recording_stats_at\":\"2026-09-02 11:32:59\",\"signal_defaults_at\":\"2026-09-02 12:21:12\"}","participants":60,"num_citations":10,"latest_version":"v1.0.0","zarr_verify_status":null,"zarr_verified_at":null,"owner_username":"nemarAdmin","owner_github":"nemarAdmin","file_size_formatted":"120 GB","zarr_data_failures":{"count":47,"detail_ref":"zarr/index.json","compacted_by":"migration_0074"},"zarr_index_url":"https://zarr.nemar.org/on004837/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}}