{"success":true,"database":"eegdash","data":{"_id":"6953f4249276ef1ee07a33cb","dataset_id":"ds005285","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.ds005285.v1.0.0","datatypes":["eeg"],"demographics":{"subjects_count":29,"ages":[25,27,26,25,30,23,21,28,22,22,27,20,26,22,28,25,23,26,26,20,24,23,23,23,30,22,24,26,22],"age_min":20,"age_max":30,"age_mean":24.448275862068964,"species":null,"sex_distribution":{"m":13,"f":16},"handedness_distribution":null},"experimental_modalities":null,"external_links":{"source_url":"https://openneuro.org/datasets/ds005285","osf_url":null,"github_url":null,"paper_url":null},"funding":[],"ingestion_fingerprint":"f81f65c9620fc1670294505c8a105629d26b40df98028e679588ade1fcdac0c7","license":"CC0","n_contributing_labs":null,"name":"29 By ANT","readme":"1.Study introduction:\nFirstly, participants underwent a series of laser stimulations of varying intensities. The experimenters determined the energy intensities corresponding to average scores of 4 and 7 points among the participants. Subsequently, each participant received a fixed-intensity laser stimulation approximately every 20 seconds, constituting one block of 40 trials, with half being high intensity and half low intensity. There were a total of 4 blocks, resulting in 160 stimulations in total. During this period, participants provided pain ratings ranging from 0 to 10. A rating of 0 indicated no sensation, 4 denoted the onset of pain perception, 6 represented moderate pain, 8 indicated severe pain, and 10 signified intolerable pain.\n2.Participant task information(description of the experiment):\nParticipants received laser stimulation and used a computer mouse to click on the appropriate position on the screen, corresponding to a scale of 0 to 10.\n3.Participant instructions(as exact as possible):\nParticipants were instructed to focus their attention on the laser stimuli, keep their eyes open, and fixate their gaze on the cross displayed on the screen. Following each laser stimulation, there was a 3-second pause. Subsequently, participants used the computer screen and keyboard to assess the intensity of pain within a 5-second time window. The subsequent trial commenced randomly within 1-3 seconds after the rating was provided.\n4.References and links:\nBi Y, Liu X, Zhao X, et al. Enhancing pain modulation: the efficacy of synchronous combination of virtual reality and transcutaneous electrical nerve stimulation. General Psychiatry 2023;36:e101164. doi:10.1136/gpsych-2023-101164.\n5.Comments:\nIn the raw data, \"32\" is used to represent \"s32\",\"64\" is used to represent \"s64\".","recording_modality":["eeg"],"senior_author":"Hu Li","sessions":["1","2","3","4"],"size_bytes":12705224701,"source":"openneuro","study_design":null,"study_domain":null,"tasks":["29ByANT"],"timestamps":{"digested_at":"2026-04-22T12:27:34.859527+00:00","dataset_created_at":"2024-06-26T06:21:03.974Z","dataset_modified_at":"2024-06-26T06:49:38.000Z"},"total_files":116,"storage":{"backend":"s3","base":"s3://openneuro.org/ds005285","raw_key":"dataset_description.json","dep_keys":["CHANGES","README","participants.json","participants.tsv","task-29ByANT_events.json"]},"tagger_meta":{"config_hash":"4a051be509a0e3d0","metadata_hash":"92a878abbd3a2f61","model":"openai/gpt-5.2","tagged_at":"2026-01-20T17:44:57.265768+00:00"},"tags":{"pathology":["Healthy"],"modality":["Tactile"],"type":["Perception"],"confidence":{"pathology":0.65,"modality":0.85,"type":0.75},"reasoning":{"few_shot_analysis":"Most similar few-shot convention is the tactile Braille dataset (\"Braille letters - EEG\"), which maps somatosensory stimulation delivered to the fingers to Modality=\"Tactile\" and a non-clinical cohort to Pathology=\"Other\" only when a special population is implied (\"visually deprived\"). Here, the stimulation is also somatosensory (laser pain), but there is no explicit special population mentioned, so by convention this should map to Pathology=\"Healthy\". For Type, the Braille example uses \"Learning\" because the scientific aim is representational transformation; in this dataset the described aim is pain intensity perception/ratings, which aligns better with Type=\"Perception\" (sensory intensity discrimination/estimation).","metadata_analysis":"Key task/stimulus facts from README:\n- Somatosensory nociceptive stimulation: \"participants underwent a series of laser stimulations of varying intensities\" and \"each participant received a fixed-intensity laser stimulation approximately every 20 seconds\".\n- Perceptual report of pain intensity: \"participants provided pain ratings ranging from 0 to 10\" and \"Participants received laser stimulation and used a computer mouse to click on the appropriate position on the screen, corresponding to a scale of 0 to 10.\".\n- Attention/fixation instructions (visual display present but not primary stimulus): \"keep their eyes open, and fixate their gaze on the cross displayed on the screen\".\nNo recruitment/diagnosis information appears in the provided metadata (no mention of patients/controls/condition).","paper_abstract_analysis":"No useful paper information. Only a citation is provided (Bi Y, Liu X, Zhao X, et al. 2023) without an abstract excerpt in the metadata payload, so it cannot be used to disambiguate population or primary study aim beyond pain modulation context.","evidence_alignment_check":"Pathology:\n1) Metadata says: no explicit diagnosis/recruitment condition is stated (only \"participants\" and task description).\n2) Few-shot pattern suggests: when no clinical group is described, label as Healthy (contrast with the Braille example where a special population is implied by the paper title/description).\n3) ALIGN/CONFLICT: Align (no conflicting explicit clinical fact).\n\nModality:\n1) Metadata says: \"laser stimulations\" with pain ratings (nociceptive somatosensory input).\n2) Few-shot pattern suggests: somatosensory stimulation maps to Tactile (as in the Braille tactile stimulation example).\n3) ALIGN/CONFLICT: Align.\n\nType:\n1) Metadata says: intensity manipulation and subjective ratings (\"varying intensities\", \"pain ratings ranging from 0 to 10\", \"assess the intensity of pain\").\n2) Few-shot pattern suggests: stimulus-driven sensory evaluation tasks map to Perception (rather than Motor, since mouse/keyboard are response devices).\n3) ALIGN/CONFLICT: Align.","decision_summary":"PATHOLOGY top-2:\n- Healthy (selected): No stated disorder/diagnosis; only generic \"participants\" with experimental pain stimulation/rating.\n- Unknown (runner-up): Because metadata does not explicitly state \"healthy controls\" or inclusion/exclusion criteria.\nDecision: Healthy, since absence of any clinical recruitment fact plus typical experimental pain paradigm implies normative participants.\nConfidence justification: limited by lack of explicit population quote.\n\nMODALITY top-2:\n- Tactile (selected): \"laser stimulations\" delivering pain (somatosensory/nociceptive) and subsequent ratings.\n- Visual (runner-up): Visual fixation cross and on-screen rating scale are present (\"fixate their gaze on the cross\", rating on screen) but are secondary to the primary sensory stimulus.\nDecision: Tactile, because the dominant stimulus is laser to the body.\nConfidence justification: multiple explicit stimulus quotes.\n\nTYPE top-2:\n- Perception (selected): Primary measured variable is perceived pain intensity (\"assess the intensity of pain\", 0–10 ratings; high vs low intensity trials).\n- Attention (runner-up): Participants are instructed to \"focus their attention on the laser stimuli\", but attention is instrumental rather than the main construct being manipulated/described.\nDecision: Perception, because the task centers on sensory/pain intensity perception and reporting.\nConfidence justification: multiple explicit pain-rating/intensity-manipulation quotes."}},"computed_title":"29 By ANT","nchans_counts":[{"val":32,"count":116}],"sfreq_counts":[{"val":1000.0,"count":116}],"stats_computed_at":"2026-04-22T23:16:00.309226+00:00","total_duration_s":96217.102,"author_year":"Xiangyue2024_29_ANT","canonical_name":null}}