{"dataset":{"id":"54507","dataset_id":"on003838","name":"EEG, pupillometry, ECG and photoplethysmography, and behavioral data in the digit span task and rest","description":"This dataset comprises multimodal physiological recordings from 86 participants during resting state and a digit span working memory task. It includes 64-channel EEG, electrocardiography, photoplethysmography, pupillometry, and behavioral performance data. The dataset enables investigation of neural and peripheral physiological correlates of cognitive load, working memory capacity, and cognitive overload detection across fine temporal scales.","owner_user_id":15,"status":"active","github_repo":"nemarDatasets/on003838","concept_doi":"10.82901/nemar.on003838","latest_version_doi":"10.82901/nemar.on003838.v1.0.0","created_at":"2026-06-22 18:01:22","updated_at":"2026-07-10 22:21:28","zenodo_concept_id":null,"is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"validated\",\n  \"title\": \"EEG, pupillometry, ECG and photoplethysmography, and behavioral data in the digit span task and rest\",\n  \"description\": \"This dataset comprises multimodal physiological recordings from 86 participants during resting state and a digit span working memory task. It includes 64-channel EEG, electrocardiography, photoplethysmography, pupillometry, and behavioral performance data. The dataset enables investigation of neural and peripheral physiological correlates of cognitive load, working memory capacity, and cognitive overload detection across fine temporal scales.\",\n  \"methods_description\": \"Data were collected during two conditions: 4 minutes of eyes-closed resting and performance of a digit span task with serial recall. In the task, participants either memorized or listened to (control) sequences of 5, 9, or 13 digits presented auditorily with 2-second stimulus onset asynchrony. Physiological signals included 64-channel EEG, ECG, PPG, and pupillometry with eye-tracking.\",\n  \"license\": \"CC0\",\n  \"dataset_type\": \"raw\",\n  \"authors\": {\n    \"Yuri G. Pavlov\": {\n      \"orcid\": \"0000-0002-3896-5145\"\n    },\n    \"Dauren Kasanov\": {\n      \"orcid\": \"0000-0001-9726-2004\"\n    },\n    \"Alexandra I. Kosachenko\": {\n      \"orcid\": \"0000-0001-8896-3837\"\n    },\n    \"Alexander I. Kotyusov\": {\n      \"orcid\": \"0000-0001-7007-824X\"\n    }\n  },\n  \"keywords\": [\n    {\n      \"term\": \"EEG\"\n    },\n    {\n      \"term\": \"working memory\"\n    },\n    {\n      \"term\": \"cognitive load\"\n    },\n    {\n      \"term\": \"pupillometry\"\n    },\n    {\n      \"term\": \"electrocardiography\"\n    },\n    {\n      \"term\": \"photoplethysmography\"\n    },\n    {\n      \"term\": \"digit span task\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"10.1038/s41597-022-01414-2\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"References\"\n    },\n    {\n      \"identifier\": \"10.1038/s41598-023-48917-5\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"References\"\n    },\n    {\n      \"identifier\": \"10.1111/psyp.14275\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"References\"\n    },\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/on003838\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataexplorer/detail?dataset_id=on003838\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"10.18112/openneuro.ds003838.v1.0.6\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDerivedFrom\"\n    }\n  ],\n  \"resource_type_specific\": \"Neuroimaging Dataset\",\n  \"modalities\": [\n    \"beh\",\n    \"eeg\"\n  ],\n  \"sizes\": [\n    \"271.9 GB (413 files)\"\n  ],\n  \"formats\": [\n    \".jpg\",\n    \".json\",\n    \".md\",\n    \".png\",\n    \".psyexp\",\n    \".py\",\n    \".set\",\n    \".sh\",\n    \".tsv\",\n    \".txt\",\n    \".wav\",\n    \".xlsx\",\n    \".yml\"\n  ],\n  \"source_hash\": \"3c925aa06a89dda974bbc2bc5ff76d14c281f33243db2a8b5a24cf92f5fb39b2\"\n}","last_activity_at":"2026-06-22 18:01:22","source":"openneuro","source_id":"ds003838","subject_count":86,"modalities":"beh,eeg","age_min":18,"age_max":44,"file_size":271965707639,"total_files":2289,"tasks":"memory,rest","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Yuri G. Pavlov, Dauren Kasanov, Alexandra I. Kosachenko, Alexander I. Kotyusov","license":"CC0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.on003838-blue)](https://doi.org/10.82901/nemar.on003838)\n\nThis dataset consists of raw 64-channel EEG, cardiovascular (electrocardiography and photoplethysmography), and pupillometry data from 86 human participants during 4 minutes of eyes-closed resting and during performance of a classic working memory task – digit span task with serial recall. The participants either memorized (memory) or just listened to (control condition) sequences of 5, 9, or 13 digits presented auditorily with 2 second stimulus onset asynchrony. The dataset can be used for (1) developing algorithms for cognitive load discrimination and detection of cognitive overload; (2) studying neural (event-related potentials and brain oscillations) and peripheral physiological (electrocardiography, photoplethysmography, and pupillometry) signals during encoding and maintenance of each sequentially presented memory item in a fine time scale; (3) correlating cognitive load and individual differences in working memory to neural and peripheral physiology, and studying the relationship between the physiological signals; (4) integration of the physiological findings with the vast knowledge coming from behavioral studies of verbal working memory in simple span paradigms.\n\nEEG, pupillometry, ECG and photoplethysmography, and behavioral data are stored separately in corresponding folders. Each data record can consist of four data folders:\nbeh - behavioral data: correctness of the recall in the memory trials\necg - electrocardiography (ECG) and photoplethysmography (PPG) data\neeg - EEG data\npupil -  pupillometry and eye-tracking data\n\nSome of the participants had some physiological data missing:\nsub-017, sub-094 have no pupillometry data\nsub-017, sub-037, sub-066 have no ECG and PPG data\nsub-013, sub-014, sub-015, sub-016, sub-017, sub-018, sub-019, sub-020, sub-021, sub-022, sub-023, sub-024, sub-025, sub-026, sub-027, sub-028, sub-029, sub-030, sub-031, sub-037, sub-066 have no EEG data","bids_version":"1.1.1","sessions_count":null,"publish_date":null,"embedding_dirty":0,"license_tier":"public","zarr_status":"failed","zarr_converted_at":null,"zarr_store_count":null,"zarr_index_etag":null,"zarr_source_commit":null,"archive_status":null,"archive_size":null,"archive_retry_count":0,"records_status":"ready","archive_skip_reason":"dataset 253.3 GB exceeds 100.0 GB archive limit; use direct download","zarr_errors":296,"zarr_failure_count":296,"zarr_deterministic":1,"zarr_failed_at":"2026-08-04 15:55:20","num_dataset_citations":9,"num_datapaper_citations":52,"n_channels":63,"electrode_system":"10-10","has_hed":0,"hed_version":null,"is_exemplar":0,"bytes_present":271930962347,"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":null,"recording_duration_min":null,"recording_duration_max":null,"recording_count":null,"recordings_unavailable":null,"recordings_measured":null,"channel_count_min":null,"channel_count_max":null,"sampling_frequency":1000,"power_line_frequency":50,"eeg_reference":"FCz","placement_scheme":null,"sweep_stamps":"{\"enrichment_updated_at\":\"2026-06-22 18:12:57\",\"metadata_updated_at\":\"2026-06-22 18:13:08\",\"archive_checked_at\":\"2026-06-22 18:13:21\",\"zarr_checked_at\":null,\"records_checked_at\":\"2026-06-22 18:14:00\",\"citations_updated_at\":\"2026-09-08 03:00:47\",\"channel_montage_checked_at\":\"2026-06-28 23:16:29\",\"hed_checked_at\":\"2026-06-30 04:48:36\",\"data_checked_at\":\"2026-08-03 03:00:31\",\"availability_report_at\":\"2026-07-23 01:15:35\",\"recording_stats_at\":null,\"signal_defaults_at\":\"2026-09-02 12:04:14\"}","participants":86,"num_citations":61,"latest_version":"v1.0.0","zarr_verify_status":null,"zarr_verified_at":null,"owner_username":"nemarAdmin","owner_github":"nemarAdmin","file_size_formatted":"253 GB","zarr_data_failures":{"count":296,"detail_ref":"zarr/index.json","compacted_by":"migration_0074"},"zarr_index_url":null,"attestation_deposit_type":null,"attestation_key_status":null,"attestation_deidentified":null,"attestation_no_duplicate":null,"attestation_upstream_source":null,"attestation_accepted_at":null}}