{"dataset":{"id":"52085","dataset_id":"on003061","name":"EEG data from an auditory oddball task","description":"This dataset comprises electroencephalography (EEG) recordings from participants performing an auditory oddball task conducted at the Meditation Research Institute in Rishikesh, India. Participants completed three 13-minute sessions during which they were presented with 750 auditory stimuli consisting of standard tones (70%), oddball tones (15%), and distractor noise bursts (15%), with instructions to respond to oddball stimuli via keypad. The study was approved by the Meditation Research Institute ethical committee in India and the University of California San Diego Institutional Review Board (IRB project #090731) and represents a standardized paradigm for investigating event-related potentials and attentional processing.","owner_user_id":15,"status":"active","github_repo":"nemarDatasets/on003061","concept_doi":"10.82901/nemar.on003061","latest_version_doi":"10.82901/nemar.on003061.v1.0.0","created_at":"2026-06-21 16:00:51","updated_at":"2026-07-10 22:13:27","zenodo_concept_id":null,"is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"enriched\",\n  \"title\": \"EEG data from an auditory oddball task\",\n  \"description\": \"This dataset comprises electroencephalography (EEG) recordings from participants performing an auditory oddball task conducted at the Meditation Research Institute in Rishikesh, India. Participants completed three 13-minute sessions during which they were presented with 750 auditory stimuli consisting of standard tones (70%), oddball tones (15%), and distractor noise bursts (15%), with instructions to respond to oddball stimuli via keypad. The study was approved by the Meditation Research Institute ethical committee in India and the University of California San Diego Institutional Review Board (IRB project #090731) and represents a standardized paradigm for investigating event-related potentials and attentional processing.\",\n  \"methods_description\": \"EEG data were collected during three identical 13-minute sessions. Participants were seated either on the floor or chair with eyes closed in a darkened room. Auditory stimuli (750 total) were presented at 1 Hz with 25 ms Gaussian jitter: 70% standard tones (500 Hz, 60 ms), 15% oddball tones (1000 Hz, 60 ms), and 15% distractor noise bursts (1000 Hz, 60 ms). All stimuli had 5 ms rise and fall times. Participants responded to oddball stimuli via keypad.\",\n  \"license\": \"CC0\",\n  \"dataset_type\": \"raw\",\n  \"authors\": {\n    \"Arnaud Delorme\": {}\n  },\n  \"keywords\": [\n    {\n      \"term\": \"EEG\"\n    },\n    {\n      \"term\": \"auditory oddball task\"\n    },\n    {\n      \"term\": \"Event-Related Potentials\",\n      \"subject_scheme\": \"MeSH\",\n      \"scheme_uri\": \"https://id.nlm.nih.gov/mesh/\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D018913\"\n    },\n    {\n      \"term\": \"P300\"\n    },\n    {\n      \"term\": \"Attention\",\n      \"subject_scheme\": \"MeSH\",\n      \"scheme_uri\": \"https://id.nlm.nih.gov/mesh/\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D001288\"\n    },\n    {\n      \"term\": \"Electroencephalography\",\n      \"subject_scheme\": \"MeSH\",\n      \"scheme_uri\": \"https://id.nlm.nih.gov/mesh/\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D004569\"\n    },\n    {\n      \"term\": \"Auditory Perception\",\n      \"subject_scheme\": \"MeSH\",\n      \"scheme_uri\": \"https://id.nlm.nih.gov/mesh/\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D001307\"\n    },\n    {\n      \"term\": \"oddball paradigm\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/on003061\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataexplorer/detail?dataset_id=on003061\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"10.18112/openneuro.ds003061.v1.0.0\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsIdenticalTo\"\n    },\n    {\n      \"identifier\": \"10.18112/openneuro.ds003061.v1.1.0\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDerivedFrom\"\n    }\n  ],\n  \"resource_type_specific\": \"EEG Dataset\",\n  \"modalities\": [\n    \"eeg\"\n  ],\n  \"sizes\": [\n    \"2.5 GB (44 files)\"\n  ],\n  \"formats\": [\n    \".gitattributes\",\n    \".json\",\n    \".m\",\n    \".md\",\n    \".set\",\n    \".tsv\",\n    \".wav\",\n    \".yml\"\n  ],\n  \"source_hash\": \"7078b32408e06dd7fec40a870708b5e0d15a6f1916bdfc7dd23589d789b114da\"\n}","last_activity_at":"2026-06-21 16:00:51","source":"openneuro","source_id":"ds003061","subject_count":13,"modalities":"eeg","age_min":24,"age_max":58,"file_size":2476810119,"total_files":288,"tasks":"P300","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Arnaud Delorme","license":"CC0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.on003061-blue)](https://doi.org/10.82901/nemar.on003061)\n\nData collection took place at the Meditation Research Institute (MRI) in Rishikesh, India under the supervision of Arnaud Delorme, PhD. The project was approved by the local MRI Indian ethical committee and the ethical committee of the University of California San Diego (IRB project # 090731).\n\nParticipants sat either on a blanket on the floor or on a chair for both experimental periods depending on their personal preference. They were asked to keep their eyes closed and all lighting in the room was turned off during data collection. An intercom allowed communication between the experimental and the recording room.\n\nParticipants performed three identical sessions of 13 minutes each. 750 stimuli were presented with 70% of them being standard (500 Hz pure tone lasting 60 milliseconds), 15% being oddball (1000 Hz pure tone lasting 60 ms) and 15% being distractors (1000 Hz white noise lasting 60 ms). All sounds took 5 milliseconds to ramp up and 5 milliseconds to ramp down. Sounds were presented at a rate of 1 per second with a random gaussian jitter of standard deviation 25 ms. Participants were instructed to respond to oddball by pressing a key on a keypad that was resting on their lap.\n\n","bids_version":"v1.2.1","sessions_count":null,"publish_date":null,"embedding_dirty":0,"license_tier":"public","zarr_status":"ready","zarr_converted_at":"2026-09-07 02:34:48","zarr_store_count":39,"zarr_index_etag":"40b47cf0168499428760a02adebca3c3","zarr_source_commit":"d351c56588a89512faebf60b3651bea8a40a77e1","archive_status":"ready","archive_size":1841813512,"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":7,"num_datapaper_citations":0,"n_channels":64,"electrode_system":"10-10","has_hed":1,"hed_version":"8.0.0","is_exemplar":0,"bytes_present":2474863025,"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":29544,"recording_duration_min":750,"recording_duration_max":816,"recording_count":39,"recordings_unavailable":0,"recordings_measured":39,"channel_count_min":79,"channel_count_max":79,"sampling_frequency":256,"power_line_frequency":50,"eeg_reference":"CMS/DRL","placement_scheme":null,"sweep_stamps":"{\"enrichment_updated_at\":\"2026-06-21 16:08:24\",\"metadata_updated_at\":\"2026-06-21 16:08:30\",\"archive_checked_at\":\"2026-06-21 16:10:40\",\"zarr_checked_at\":null,\"records_checked_at\":\"2026-06-21 16:09:34\",\"citations_updated_at\":\"2026-09-09 03:00:12\",\"channel_montage_checked_at\":\"2026-06-28 23:09:40\",\"hed_checked_at\":\"2026-06-30 04:40:57\",\"data_checked_at\":\"2026-07-30 03:01:05\",\"availability_report_at\":\"2026-07-23 01:13:10\",\"signal_defaults_at\":\"2026-09-02 11:57:51\",\"recording_stats_at\":\"2026-09-07 03:00:59\"}","participants":13,"num_citations":7,"latest_version":"v1.0.0","zarr_verify_status":null,"zarr_verified_at":null,"owner_username":"nemarAdmin","owner_github":"nemarAdmin","file_size_formatted":"2.31 GB","zarr_data_failures":null,"zarr_index_url":"https://zarr.nemar.org/on003061/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}}