{"dataset":{"id":"61233","dataset_id":"on007431","name":"Diffuse predictions stabilize and reshape neural code during memory encoding","description":"This EEG dataset investigates how diffuse (categorical) predictions about stimulus orientation shape neural representations during memory encoding. Participants performed an orientation working-memory task in which a central color cue indicated whether an upcoming grating's orientation was drawn from a predictable 90° range or was fully unpredictable, and later judged whether a probe was rotated clockwise or counterclockwise relative to the memorized orientation. The study examines how predictive information stabilizes and reshapes neural codes for encoded visual features.","owner_user_id":15,"status":"active","github_repo":"nemarDatasets/on007431","concept_doi":"10.82901/nemar.on007431","latest_version_doi":"10.82901/nemar.on007431.v1.0.0","created_at":"2026-06-30 09:01:40","updated_at":"2026-08-18 23:50:27","zenodo_concept_id":null,"is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"validated\",\n  \"title\": \"Diffuse predictions stabilize and reshape neural code during memory encoding\",\n  \"description\": \"This EEG dataset investigates how diffuse (categorical) predictions about stimulus orientation shape neural representations during memory encoding. Participants performed an orientation working-memory task in which a central color cue indicated whether an upcoming grating's orientation was drawn from a predictable 90° range or was fully unpredictable, and later judged whether a probe was rotated clockwise or counterclockwise relative to the memorized orientation. The study examines how predictive information stabilizes and reshapes neural codes for encoded visual features.\",\n  \"methods_description\": \"Participants viewed a central color cue (red, green, or blue) preceding a memory grating. Two colors were predictive, cueing one of two non-overlapping 90° orientation ranges from which the grating orientation was sampled, while a third non-predictive color indicated the orientation could be anything. After a delay, participants judged whether a probe grating was rotated clockwise or counterclockwise relative to the memorized orientation, while EEG was recorded.\",\n  \"license\": \"CC0\",\n  \"dataset_type\": \"raw\",\n  \"authors\": {\n    \"Nursena Ataseven\": {},\n    \"Sahcan Ozdemir\": {},\n    \"Wouter Kruijne\": {},\n    \"Daniel Schneider\": {},\n    \"Elkan G. Akyurek\": {}\n  },\n  \"keywords\": [\n    {\n      \"term\": \"EEG\"\n    },\n    {\n      \"term\": \"working memory\"\n    },\n    {\n      \"term\": \"Visual Perception\",\n      \"subject_scheme\": \"MeSH\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D014796\"\n    },\n    {\n      \"term\": \"prediction\"\n    },\n    {\n      \"term\": \"orientation discrimination\"\n    },\n    {\n      \"term\": \"memory encoding\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/on007431\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataset/on007431\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"10.18112/openneuro.ds007431.v1.0.0\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDerivedFrom\"\n    }\n  ],\n  \"resource_type_specific\": \"EEG Dataset\",\n  \"modalities\": [\n    \"eeg\"\n  ],\n  \"sizes\": [\n    \"155.2 GB (95 files)\"\n  ],\n  \"formats\": [\n    \".fdt\",\n    \".json\",\n    \".md\",\n    \".set\",\n    \".tsv\",\n    \".yml\"\n  ],\n  \"source_hash\": \"73fd6f031c5a9d754de516fd52d26e1512d10b7dd6a59d0401db942640dd179a\"\n}","last_activity_at":"2026-06-30 09:01:40","source":"openneuro","source_id":"ds007431","subject_count":47,"modalities":"eeg","age_min":null,"age_max":null,"file_size":155226971338,"total_files":244,"tasks":"DelayedComparisonTask","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Nursena Ataseven, Sahcan Ozdemir, Wouter Kruijne, Daniel Schneider, Elkan G. Akyurek","license":"CC0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.on007431-blue)](https://doi.org/10.82901/nemar.on007431)\n\nExperimental task: participants judged whether a probe grating was rotated clockwise or counterclockwise relative to a memorized orientation, which was either predictable or unpredictable. Each memory item was preceded by a central color cue (red, green, or blue). In half of the trials, two of these colors (predictive) cued two non-overlapping 90° segments of orientations that the grating was sampled from. Thus, participants knew the range of possible orientations of these items, but not their exact orientation. In the other half of the trials, a third (non-predictive) color was presented that signaled the item could have any possible orientation.The preprocessing and analysis scripts can be found on OSF: https://osf.io/8evwh/","bids_version":"v1.2.1","sessions_count":null,"publish_date":null,"embedding_dirty":0,"license_tier":"public","zarr_status":"ready","zarr_converted_at":"2026-08-27 07:48:36","zarr_store_count":47,"zarr_index_etag":"38b7aa0f601175d741e5fe9d3f0aa6d9","zarr_source_commit":"33479729f9e24ca4de277eb07d14910132a5c5b4","archive_status":null,"archive_size":null,"archive_retry_count":0,"records_status":"ready","archive_skip_reason":"dataset 144.6 GB exceeds 100.0 GB archive limit; use direct download","zarr_errors":0,"zarr_failure_count":0,"zarr_deterministic":0,"zarr_failed_at":null,"num_dataset_citations":0,"num_datapaper_citations":0,"n_channels":66,"electrode_system":"10-10","has_hed":0,"hed_version":"8.1.0","is_exemplar":0,"bytes_present":155205566052,"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":576610.5439999999,"recording_duration_min":9422.32,"recording_duration_max":14510.956,"recording_count":47,"recordings_unavailable":0,"recordings_measured":47,"channel_count_min":66,"channel_count_max":66,"sampling_frequency":1000,"power_line_frequency":null,"eeg_reference":"FCz","placement_scheme":"10-20","sweep_stamps":"{\"enrichment_updated_at\":\"2026-08-18 23:50:04\",\"metadata_updated_at\":\"2026-08-18 23:50:25\",\"archive_checked_at\":\"2026-07-02 04:31:22\",\"zarr_checked_at\":null,\"records_checked_at\":\"2026-07-02 04:32:03\",\"citations_updated_at\":null,\"channel_montage_checked_at\":null,\"hed_checked_at\":null,\"data_checked_at\":null,\"availability_report_at\":\"2026-07-23 01:32:33\",\"recording_stats_at\":\"2026-09-02 11:34:01\",\"signal_defaults_at\":\"2026-09-02 12:54:42\"}","participants":47,"num_citations":0,"latest_version":"v1.0.0","zarr_verify_status":null,"zarr_verified_at":null,"owner_username":"nemarAdmin","owner_github":"nemarAdmin","file_size_formatted":"145 GB","zarr_data_failures":null,"zarr_index_url":"https://zarr.nemar.org/on007431/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}}