{"success":true,"database":"eegdash","data":{"_id":"6953f4249276ef1ee07a33ca","dataset_id":"ds005284","associated_paper_doi":null,"authors":["Zhao Xiangyue","Zhou Jingyao","Zhang Libo","Duan Haoqing","Wei Shiyu","Bi Yanzhi","Hu Li"],"bids_version":"1.1.1","contact_info":["Xiangyue Zhao"],"contributing_labs":null,"data_processed":true,"dataset_doi":"doi:10.18112/openneuro.ds005284.v1.0.0","datatypes":["eeg"],"demographics":{"subjects_count":26,"ages":[25,22,21,22,23,19,23,19,20,23,22,18,19,23,24,22,19,24,19,20,20,20,20,23,20,19],"age_min":18,"age_max":25,"age_mean":21.115384615384617,"species":null,"sex_distribution":{"m":8,"f":18},"handedness_distribution":null},"experimental_modalities":null,"external_links":{"source_url":"https://openneuro.org/datasets/ds005284","osf_url":null,"github_url":null,"paper_url":null},"funding":[],"ingestion_fingerprint":"d98a628719ee254531d06c2dd6f213056c32bdaa83d62df36bddada28951fdc4","license":"CC0","n_contributing_labs":null,"name":"26 By Biosemi","readme":null,"recording_modality":["eeg"],"senior_author":"Hu Li","sessions":[],"size_bytes":1784094196,"source":"openneuro","study_design":null,"study_domain":null,"tasks":["26ByBiosemi"],"timestamps":{"digested_at":"2026-04-22T12:27:34.701485+00:00","dataset_created_at":"2024-06-26T05:58:33.685Z","dataset_modified_at":"2024-06-26T09:15:50.000Z"},"total_files":26,"storage":{"backend":"s3","base":"s3://openneuro.org/ds005284","raw_key":"dataset_description.json","dep_keys":["CHANGES","README","participants.json","participants.tsv","task-26ByBiosemi_events.json"]},"tagger_meta":{"config_hash":"3557b68bca409f28","metadata_hash":"feca80fb3846054f","model":"openai/gpt-5.2","tagged_at":"2026-04-07T09:32:40.872789+00:00"},"tags":{"pathology":["Healthy"],"modality":["Unknown"],"type":["Unknown"],"confidence":{"pathology":0.6,"modality":0.4,"type":0.4},"reasoning":{"few_shot_analysis":"Several few-shot examples show that when metadata explicitly describes the task/stimuli (e.g., auditory digit span, cross-modal oddball, braille tactile letters), Modality and Type can be assigned confidently. In contrast, for the current dataset, the task label \"26ByBiosemi\" provides no paradigm/stimulus information. By the few-shot convention, when task/stimulus details are missing, we should avoid guessing Modality/Type and use \"Unknown\" (rather than inferring from hardware/vendor names).","metadata_analysis":"Key available metadata is minimal and contains no explicit task or stimulus description. Quotes: (1) Title: \"26 By Biosemi\". (2) Participants: \"Subjects: 26; Sex: {'m': 8, 'f': 18}; Age range: 18-25\". (3) Tasks: \"26ByBiosemi\". There are no quoted indications of a clinical recruitment criterion, no mention of patient groups, and no mention of stimulus modality (auditory/visual/tactile), movement, rest, or sleep.","paper_abstract_analysis":"No useful paper information.","evidence_alignment_check":"Pathology: Metadata says only demographics (\"Age range: 18-25\") and gives no diagnosis/condition; few-shot pattern suggests labeling as Healthy when no clinical population is indicated and participants are typical young adults; ALIGN (no conflict).\nModality: Metadata says only \"Tasks: '26ByBiosemi'\" with no stimuli described; few-shot pattern suggests using Unknown when stimuli channel is not specified; ALIGN.\nType: Metadata provides no paradigm/construct beyond the task name; few-shot pattern suggests using Unknown when the cognitive construct/purpose is not stated; ALIGN.","decision_summary":"Top-2 candidates per category:\n- Pathology: (1) Healthy—supported by absence of any clinical recruitment info and generic young-adult sample (\"Age range: 18-25\"); (2) Unknown—possible if recruitment criteria are unstated. Winner: Healthy.\n- Modality: (1) Unknown—no stimulus channel described (only \"26ByBiosemi\"); (2) Resting State—possible but not evidenced. Winner: Unknown.\n- Type: (1) Unknown—no paradigm/aim described; (2) Resting-state—possible but not evidenced. Winner: Unknown.\nConfidence notes: Pathology has some support from the lack of clinical descriptors plus typical demographics (but no explicit 'healthy'); Modality/Type have no direct evidence, so remain low-confidence Unknown."}},"computed_title":"26 By Biosemi","nchans_counts":[{"val":64,"count":26}],"sfreq_counts":[{"val":1024.0,"count":25},{"val":2048.0,"count":1}],"stats_computed_at":"2026-04-22T23:16:00.309211+00:00","total_duration_s":8603.0,"author_year":"Xiangyue2024_26_Biosemi","canonical_name":null}}