{"dataset":{"id":"55224","dataset_id":"on004147","name":"Average Task Value","description":"This dataset contains EEG recordings from twelve participants who each completed three probabilistic learning tasks involving cue-response mappings with varying feedback validity (low, high, and mixed value cues). The study investigates how average task value modulates learning and neural correlates of feedback processing. Data were collected to test computational and physiological hypotheses regarding reinforcement learning and reward valuation.","owner_user_id":15,"status":"active","github_repo":"nemarDatasets/on004147","concept_doi":"10.82901/nemar.on004147","latest_version_doi":"10.82901/nemar.on004147.v1.0.0","created_at":"2026-06-23 12:31:53","updated_at":"2026-08-19 16:22:42","zenodo_concept_id":null,"is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"validated\",\n  \"title\": \"Average Task Value\",\n  \"description\": \"This dataset contains EEG recordings from twelve participants who each completed three probabilistic learning tasks involving cue-response mappings with varying feedback validity (low, high, and mixed value cues). The study investigates how average task value modulates learning and neural correlates of feedback processing. Data were collected to test computational and physiological hypotheses regarding reinforcement learning and reward valuation.\",\n  \"methods_description\": \"Participants performed 144 trials each of three learning tasks in which they learned cue-response mappings for six colored shape cues, responding with left ('d') or right ('k') key presses. Feedback validity differed across tasks: low-value cues had 0.5 validity, high-value cues had 0.8 validity, and a mid-value task combined three of each cue type.\",\n  \"license\": \"CC0\",\n  \"dataset_type\": \"raw\",\n  \"authors\": {\n    \"Cameron D. Hassall\": {\n      \"orcid\": \"0000-0001-9283-2813\"\n    },\n    \"Laurence T. Hunt\": {\n      \"orcid\": \"0000-0002-8393-8533\"\n    },\n    \"Clay B. Holroyd\": {\n      \"orcid\": \"0000-0003-3084-8574\"\n    }\n  },\n  \"keywords\": [\n    {\n      \"term\": \"EEG\"\n    },\n    {\n      \"term\": \"reinforcement learning\"\n    },\n    {\n      \"term\": \"reward\"\n    },\n    {\n      \"term\": \"decision making\"\n    },\n    {\n      \"term\": \"feedback processing\"\n    },\n    {\n      \"term\": \"probabilistic learning\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"10.1101/2021.09.16.460600\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/on004147\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"10.18112/openneuro.ds004147.v1.0.2\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDerivedFrom\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataset/on004147\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    }\n  ],\n  \"resource_type_general\": \"Dataset\",\n  \"resource_type_specific\": \"Neuroimaging Dataset\",\n  \"modalities\": [\n    \"beh\",\n    \"eeg\"\n  ],\n  \"sizes\": [\n    \"4.3 GB (46 files)\"\n  ],\n  \"formats\": [\n    \".eeg\",\n    \".jpg\",\n    \".json\",\n    \".m\",\n    \".md\",\n    \".png\",\n    \".tsv\",\n    \".vhdr\",\n    \".vmrk\",\n    \".yml\"\n  ],\n  \"source_hash\": \"1e4da009865a511c4800f38f9b42f13b444796e7812ab6a1e327423fe3003528\"\n}","last_activity_at":"2026-06-23 12:31:53","source":"openneuro","source_id":"ds004147","subject_count":12,"modalities":"beh,eeg","age_min":22,"age_max":77,"file_size":4291442627,"total_files":126,"tasks":"casinos","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Cameron D. Hassall, Laurence T. Hunt, Clay B. Holroyd","license":"CC0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.on004147-blue)](https://doi.org/10.82901/nemar.on004147)\n\n### Average Task Value\n\nTwelve participants completed three learning tasks. In each task the goal was to learn cue-response mappings for six cues. The cues were various coloured shapes. The possible responses were left ('d' key) or right ('k' key). There were two types of cues. Low-value cues had a feedback validity of 0.5 (i.e., a coin toss). High-value cues had a feedback validity of 0.8 (80% chance of a win if the correct action was chosen). The low-value task contained only low-value cues. The high-value task contained only high-value cues. The mid-value task contained three low-value cues and three high-value cues. Participants completed 144 trials of each task.\n\nPreprint: https://doi.org/10.1101/2021.09.16.460600\n\nAnalysis code: https://github.com/chassall/averagetaskvalue","bids_version":"1.2.1","sessions_count":null,"publish_date":null,"embedding_dirty":0,"license_tier":"public","zarr_status":"ready","zarr_converted_at":"2026-08-05 20:50:33","zarr_store_count":12,"zarr_index_etag":"00a30f4744c92f9cad456b0bac5dfb9f","zarr_source_commit":"901790220e47b11f1d09eafacad815a2e41995c3","archive_status":"ready","archive_size":2852662786,"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":4,"n_channels":31,"electrode_system":"10-10","has_hed":0,"hed_version":null,"is_exemplar":0,"bytes_present":4290216427,"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":34589.020000000004,"recording_duration_min":2625.94,"recording_duration_max":3161.62,"recording_count":12,"recordings_unavailable":0,"recordings_measured":12,"channel_count_min":31,"channel_count_max":31,"sampling_frequency":1000,"power_line_frequency":50,"eeg_reference":"Fz","placement_scheme":null,"sweep_stamps":"{\"enrichment_updated_at\":\"2026-08-19 16:22:28\",\"metadata_updated_at\":\"2026-08-19 16:22:41\",\"archive_checked_at\":\"2026-06-23 12:43:51\",\"zarr_checked_at\":null,\"records_checked_at\":\"2026-06-23 12:43:08\",\"citations_updated_at\":\"2026-09-08 03:00:50\",\"channel_montage_checked_at\":\"2026-06-28 23:20:48\",\"hed_checked_at\":\"2026-06-30 04:53:38\",\"data_checked_at\":\"2026-08-07 03:00:57\",\"availability_report_at\":\"2026-07-23 01:17:12\",\"recording_stats_at\":\"2026-09-02 11:32:38\",\"signal_defaults_at\":\"2026-09-02 12:08:24\"}","participants":12,"num_citations":4,"latest_version":"v1.0.0","zarr_verify_status":null,"zarr_verified_at":null,"owner_username":"nemarAdmin","owner_github":"nemarAdmin","file_size_formatted":"4.00 GB","zarr_data_failures":null,"zarr_index_url":"https://zarr.nemar.org/on004147/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}}