{"dataset":{"id":"57987","dataset_id":"on004580","name":"Simon-conflict Task.","description":"This dataset comprises EEG recordings from 146 participants (98 with Parkinson's disease and 48 healthy controls) performing a Simon conflict task. Participants responded to color-coded stimuli presented laterally on a screen using a 64-channel BrainVision EEG system. The task manipulated spatial congruency between stimulus location and required response hand, enabling investigation of conflict processing and motor control mechanisms in both patient and control populations.","owner_user_id":15,"status":"active","github_repo":"nemarDatasets/on004580","concept_doi":"10.82901/nemar.on004580","latest_version_doi":"10.82901/nemar.on004580.v1.0.0","created_at":"2026-06-24 22:01:42","updated_at":"2026-07-10 22:35:08","zenodo_concept_id":null,"is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"enriched\",\n  \"title\": \"Simon-conflict Task.\",\n  \"description\": \"This dataset comprises EEG recordings from 146 participants (98 with Parkinson's disease and 48 healthy controls) performing a Simon conflict task. Participants responded to color-coded stimuli presented laterally on a screen using a 64-channel BrainVision EEG system. The task manipulated spatial congruency between stimulus location and required response hand, enabling investigation of conflict processing and motor control mechanisms in both patient and control populations.\",\n  \"methods_description\": \"EEG data were acquired using a 64-channel BrainVision cap during performance of a Simon task. Stimuli (yellow, red, cyan, or blue) were presented on the left or right side of the screen. Participants pressed left or right keys based on stimulus color (yellow/red → left; cyan/blue → right), creating spatially congruent and incongruent trial conditions. Data were analyzed separately for congruent and incongruent trials. All research protocols were approved by the University of Iowa Human Subjects Review Board (IRB# 201707828). This research was supported by NIH grants P20NS123151 and R01NS100849, and NRSA F32AG069445-01.\",\n  \"license\": \"CC0\",\n  \"dataset_type\": \"raw\",\n  \"authors\": {\n    \"Arun Singh arun.singh@usd.edu\": {},\n    \"Rachel Cole rachel-cole@uiowa.edu\": {},\n    \"Arturo Espinoza arturo-espinoza@uiowa.edu\": {},\n    \"Jan R Wessel jan-wessel@uiowa.edu\": {},\n    \"Jim Cavanagh jcavanagh@unm.edu\": {},\n    \"Nandakumar Narayanan nandakumar-narayanan@uiowa.edu\": {}\n  },\n  \"keywords\": [\n    {\n      \"term\": \"EEG\"\n    },\n    {\n      \"term\": \"Simon task\"\n    },\n    {\n      \"term\": \"conflict processing\"\n    },\n    {\n      \"term\": \"Parkinson's disease\"\n    },\n    {\n      \"term\": \"healthy controls\"\n    },\n    {\n      \"term\": \"motor control\"\n    },\n    {\n      \"term\": \"event-related potentials\"\n    },\n    {\n      \"term\": \"response inhibition\"\n    },\n    {\n      \"term\": \"error monitoring\"\n    },\n    {\n      \"term\": \"BrainVision\"\n    },\n    {\n      \"term\": \"spatial congruency\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"10.1101/2022.07.26.22278079\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"References\"\n    },\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/on004580\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataexplorer/detail?dataset_id=on004580\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"10.18112/openneuro.ds004580.v1.0.0\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDerivedFrom\"\n    }\n  ],\n  \"funding_references\": [\n    {\n      \"funder_name\": \"and NRSA F32 AG069445-01 to RC. All research protocols were approved by the University of Iowa\"\n    },\n    {\n      \"funder_name\": \" Human Subjects Review Board (IRB# 201707828).\"\n    },\n    {\n      \"funder_name\": \"NIH\",\n      \"award_number\": \"P20NS123151\"\n    },\n    {\n      \"funder_name\": \"NIH\",\n      \"award_number\": \"R01NS100849\"\n    },\n    {\n      \"funder_name\": \"NIH\",\n      \"award_number\": \"F32AG069445-01\"\n    },\n    {\n      \"funder_name\": \"NIH\",\n      \"award_number\": \"F32AG069445\"\n    }\n  ],\n  \"resource_type_specific\": \"Neuroimaging Dataset\",\n  \"modalities\": [\n    \"beh\",\n    \"eeg\"\n  ],\n  \"sizes\": [\n    \"17.0 GB (295 files)\"\n  ],\n  \"formats\": [\n    \".fdt\",\n    \".json\",\n    \".md\",\n    \".set\",\n    \".tsv\",\n    \".yml\"\n  ],\n  \"source_hash\": \"11f8fd7fbd0c97ec836d043a21a234b3be351d72661481fdecf241edf52c76e0\"\n}","last_activity_at":"2026-06-24 22:01:42","source":"openneuro","source_id":"ds004580","subject_count":147,"modalities":"beh,eeg","age_min":48,"age_max":86,"file_size":17008442118,"total_files":1186,"tasks":"Simon","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Arun Singh arun.singh@usd.edu, Rachel Cole rachel-cole@uiowa.edu, Arturo Espinoza arturo-espinoza@uiowa.edu, Jan R Wessel jan-wessel@uiowa.edu, Jim Cavanagh jcavanagh@unm.edu, Nandakumar Narayanan nandakumar-narayanan@uiowa.edu","license":"CC0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.on004580-blue)](https://doi.org/10.82901/nemar.on004580)\n\nThis experiment includes 146 subjects: 98 individuals with Parkinsons disease, \nand 48 controls. Subjects completed  this Simon task (along with multiple other cognitive tasks) \nwhile EEG was recorded with a 64-channel BrainVision cap. This task included a stimulus presented\nto the left or right side of the screen. The researchers instructed participants to press a left key when the \nwas yellow or red and a right key when it was cyan or blue. The stimulus was either spatially congruent \nwith the screen side matching the response hand or incongruent with the screen side contralateral \nto the response hand. The researchers analyzed data from congruent and incongruent trials separately.","bids_version":"v1.2.1","sessions_count":null,"publish_date":null,"embedding_dirty":0,"license_tier":"public","zarr_status":"ready","zarr_converted_at":"2026-08-06 00:31:51","zarr_store_count":147,"zarr_index_etag":"ccc5ee3b4a706c7a28bd5607f71208f0","zarr_source_commit":"cddaf0b92216ed1a2b045998f3ce1a02515048ba","archive_status":"ready","archive_size":15548925262,"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":0,"num_datapaper_citations":8,"n_channels":63,"electrode_system":"10-10","has_hed":0,"hed_version":null,"is_exemplar":0,"bytes_present":17000830316,"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":131451.69999999998,"recording_duration_min":394.36,"recording_duration_max":1616,"recording_count":147,"recordings_unavailable":0,"recordings_measured":147,"channel_count_min":63,"channel_count_max":66,"sampling_frequency":500,"power_line_frequency":60,"eeg_reference":"Pz","placement_scheme":null,"sweep_stamps":"{\"enrichment_updated_at\":\"2026-06-24 22:11:01\",\"metadata_updated_at\":\"2026-06-24 22:11:11\",\"archive_checked_at\":\"2026-06-24 22:23:38\",\"zarr_checked_at\":null,\"records_checked_at\":\"2026-06-24 22:12:37\",\"citations_updated_at\":\"2026-09-08 03:00:50\",\"channel_montage_checked_at\":\"2026-06-28 23:30:01\",\"hed_checked_at\":\"2026-06-30 05:02:46\",\"data_checked_at\":\"2026-08-12 03:00:37\",\"availability_report_at\":\"2026-07-23 01:19:54\",\"recording_stats_at\":\"2026-09-02 11:32:51\",\"signal_defaults_at\":\"2026-09-02 12:17:27\"}","participants":147,"num_citations":8,"latest_version":"v1.0.0","zarr_verify_status":null,"zarr_verified_at":null,"owner_username":"nemarAdmin","owner_github":"nemarAdmin","file_size_formatted":"15.84 GB","zarr_data_failures":null,"zarr_index_url":"https://zarr.nemar.org/on004580/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}}