{"success":true,"database":"eegdash","data":{"_id":"69de3cac897a7725c66ff164","dataset_id":"nm000185","associated_paper_doi":null,"authors":["Bob Kemp","Aeilko H. Zwinderman","Bert Tuk","Hilbert A.C. Kamphuisen","Josefien J.L. Oberye"],"bids_version":"1.9.0","canonical_name":null,"contact_info":null,"contributing_labs":null,"data_processed":false,"dataset_doi":"doi:10.13026/C2X676","datatypes":["eeg"],"demographics":{"subjects_count":100,"ages":[33,33,26,26,34,28,31,30,25,25,26,26,26,27,27,31,32,31,28,28,51,51,56,50,54,56,51,54,56,51,50,54,57,60,54,57,51,52,51,67,66,69,73,74,66,66,73,67,67,71,70,69,67,73,71,72,66,67,67,89,101,95,91,85,88,88,87,89,88,88,97,92,96,90,85,54,57,56,60,35,18,32,35,51,66,47,20,21,21,22,20,66,79,48,53,28,24,34,56,48],"age_min":18,"age_max":101,"age_mean":54.7,"species":null,"sex_distribution":{"f":48,"m":52},"handedness_distribution":null},"experimental_modalities":null,"external_links":{"source_url":"https://nemar.org/dataexplorer/detail/nm000185","osf_url":null,"github_url":null,"paper_url":null},"funding":[],"ingestion_fingerprint":"290f8f6bf3e464cc934dcc32d3fcb5ad6752dc59c25c663211b1057d0a653d26","license":"ODbL v1.0","n_contributing_labs":null,"name":"Sleep-EDF Expanded: Whole-Night PSG Recordings","readme":"Sleep-EDF Expanded: Whole-Night PSG Recordings\n================================================\n197 whole-night PSG recordings from PhysioNet Sleep-EDF Expanded.\n- Cassette study: 78 healthy subjects, ambulatory 48h recordings\n- Telemetry study: 22 subjects, Temazepam drug study\nChannels: EEG Fpz-Cz, EEG Pz-Oz (100 Hz), EOG horizontal, EMG submental\n(+ respiration, temperature in some recordings)\nSleep staging: Expert-annotated 30-second epochs in _events.tsv files.\nStages: Wake, N1, N2, N3 (combines original S3+S4 per AASM), REM, Unknown.\nOriginal Rechtschaffen & Kales stages preserved in 'original_stage' column.\nReference: Kemp et al. (2000) IEEE TBME 47(9), 1185-1194.\nPhysioNet: https://physionet.org/content/sleep-edfx/1.0.0/","recording_modality":["eeg"],"senior_author":null,"sessions":["night1","night2"],"size_bytes":8716142432,"source":"nemar","storage":{"backend":"nemar","base":"s3://nemar/nm000185","raw_key":"dataset_description.json","dep_keys":["README","participants.json","participants.tsv"]},"study_design":null,"study_domain":null,"tasks":["sleep"],"timestamps":{"digested_at":"2026-04-30T14:08:50.426446+00:00","dataset_created_at":null,"dataset_modified_at":"2026-04-09T16:10:07Z"},"total_files":197,"computed_title":"Sleep-EDF Expanded: Whole-Night PSG Recordings","nchans_counts":[{"val":7,"count":153},{"val":5,"count":44}],"sfreq_counts":[{"val":100.0,"count":197}],"stats_computed_at":"2026-05-01T13:49:34.659998+00:00","total_duration_s":13856530.0,"author_year":"Kemp2000"}}