{"success":true,"database":"eegdash","data":{"_id":"6953f4249276ef1ee07a33d0","dataset_id":"ds005293","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.ds005293.v1.0.0","datatypes":["eeg"],"demographics":{"subjects_count":95,"ages":[24,20,23,18,22,26,21,19,22,21,22,23,23,19,23,19,23,23,23,22,22,21,23,20,25,21,22,19,23,22,22,22,20,22,19,22,25,24,23,20,21,18,19,21,22,20,21,21,19,20,21,20,18,22,23,18,21,19,22,21,22,22,19,23,22,19,23,21,21,22,23,23,21,19,23,24,23,22,22,23,22,24,22,26,18,23,24,22,22,23,22,25,21,23,22],"age_min":18,"age_max":26,"age_mean":21.642105263157895,"species":null,"sex_distribution":{"f":58,"m":37},"handedness_distribution":null},"experimental_modalities":null,"external_links":{"source_url":"https://openneuro.org/datasets/ds005293","osf_url":null,"github_url":null,"paper_url":null},"funding":[],"ingestion_fingerprint":"52182dee382bbb0bf7b7d1057133f2cd86f03d2c375d070fa64d0a61a54a2f90","license":"CC0","n_contributing_labs":null,"name":"95 By BP","readme":"1.Study introduction:\nIn this experiment, the intensity of laser stimulation varied individually based on participants’pain thresholds. Prior to the formal commencement of the experiment, participants underwent a series of stimuli of increasing intensity, incrementally rising from low to high in 0.25J steps until reaching the maximum tolerable intensity for each individual. Participants were instructed to verbally report the perceived pain intensity of each laser stimulation using a numerical rating scale (NRS) ranging from 0 (no sensation) to 10 (the maximum tolerable level of pain), with 4 indicating the pain perception threshold akin to a pricking sensation. In this study, each participant received four levels of stimulation intensity, corresponding to ratings of 2, 4, 6, and 8 on the NRS (E1: 2.0 ± 0.2 J; E2: 2.7 ± 0.3 J; E3: 3.4 ± 0.3 J; E4: 4.1 ± 0.4 J).\n2.Participant task information(description of the experiment):\nParticipants received laser stimulation and subsequently provided pain intensity ratings one by one.\n3.Participant instructions(as exact as possible):\nThe participants were instructed to relax and sit comfortably on a chair, focusing their attention on the sensation of laser stimulation. The experimental environment was quiet, with a constant room temperature, and no unrelated individuals were present. Both the participants and the experimenter wore protective goggles. The experimental design employed a two-factor repeated measures within-subject design, with 4 levels of stimulation intensity crossed with 2 levels of stimulation location (left hand dorsum and right hand dorsum), resulting in a total of 8 conditions (stimulation locations: left hand dorsum and right hand dorsum). There were 10 trials for each condition, totaling 80 trials. Participants received pain stimulation and provided ratings for each trial individually.","recording_modality":["eeg"],"senior_author":"Hu Li","sessions":["1","2","3","4","5","6"],"size_bytes":106171437197,"source":"openneuro","study_design":null,"study_domain":null,"tasks":["95ByBP"],"timestamps":{"digested_at":"2026-04-22T12:27:38.717109+00:00","dataset_created_at":"2024-06-27T01:43:35.308Z","dataset_modified_at":"2024-07-29T07:01:52.000Z"},"total_files":570,"storage":{"backend":"s3","base":"s3://openneuro.org/ds005293","raw_key":"dataset_description.json","dep_keys":["CHANGES","README","participants.json","participants.tsv","task-95ByBP_events.json"]},"tagger_meta":{"config_hash":"4a051be509a0e3d0","metadata_hash":"a81a6c2d519c5d1a","model":"openai/gpt-5.2","tagged_at":"2026-01-20T17:46:49.692665+00:00"},"tags":{"pathology":["Healthy"],"modality":["Tactile"],"type":["Perception"],"confidence":{"pathology":0.65,"modality":0.8,"type":0.8},"reasoning":{"few_shot_analysis":"Most similar few-shot example by stimulus channel is the 'Braille letters - EEG' dataset (tactile stimulation on the fingers), which is labeled with Modality='Tactile'. This guides mapping somatosensory stimulation on the hand to the Tactile modality. Unlike that braille dataset (Type='Learning'), the present dataset centers on intensity/pain perception and ratings, so Type is better matched to the convention used in the examples where sensory discrimination/detection paradigms are labeled as 'Perception' (e.g., visual discrimination task labeled Perception).","metadata_analysis":"Key facts from the README: (1) Somatosensory/nociceptive stimulation: \"Participants received laser stimulation\" and stimulation locations were \"left hand dorsum and right hand dorsum\". (2) Perceptual outcome measure: participants \"verbally report the perceived pain intensity ... using a numerical rating scale (NRS) ranging from 0 ... to 10\" and \"subsequently provided pain intensity ratings one by one.\" (3) No clinical recruitment described: the text discusses \"participants’ pain thresholds\" and individualized tolerable intensity, but does not mention any diagnosis/patient group.","paper_abstract_analysis":"No useful paper information.","evidence_alignment_check":"Pathology: Metadata says only \"participants\" with individualized pain thresholds and gives no diagnosis/patient-group terms; few-shot patterns do not force any pathology without explicit clinical recruitment. ALIGN (both support non-clinical / likely healthy, but metadata is not explicit).\nModality: Metadata says \"laser stimulation\" applied to \"left hand dorsum and right hand dorsum\" (somatosensory). Few-shot convention maps hand/finger stimulation (braille) to 'Tactile'. ALIGN.\nType: Metadata emphasizes perceived pain intensity and ratings (NRS 0-10; levels 2/4/6/8) after each stimulus, i.e., sensory intensity perception. Few-shot convention labels sensory discrimination/perception paradigms as 'Perception'. ALIGN.","decision_summary":"Top-2 candidates:\n- Pathology: (1) Healthy — supported by lack of any stated diagnosis and generic \"participants\"; (2) Unknown — because the README never explicitly states healthy controls/no disorder. Final: Healthy (metadata implies a normative pain-perception experiment, but not explicitly stated) with moderate confidence.\n- Modality: (1) Tactile — \"laser stimulation\" to \"hand dorsum\"; (2) Other — if one treated laser pain as not fitting tactile. Final: Tactile, strongly supported and consistent with few-shot tactile convention.\n- Type: (1) Perception — \"perceived pain intensity\" and trial-by-trial NRS ratings; (2) Attention — instruction to \"focusing their attention on the sensation\". Final: Perception because the main construct is pain intensity perception/psychophysics rather than attentional manipulation.\nConfidence basis: Pathology has no explicit 'healthy' statement; Modality and Type each have multiple direct README quotes."}},"computed_title":"95 By BP","nchans_counts":[{"val":60,"count":570}],"sfreq_counts":[{"val":1000.0,"count":570}],"stats_computed_at":"2026-04-22T23:16:00.309284+00:00","total_duration_s":842511.818,"author_year":"Xiangyue2024_95_BP","canonical_name":null}}