{"success":true,"database":"eegdash","data":{"_id":"6953f4249276ef1ee07a33ce","dataset_id":"ds005291","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.ds005291.v1.0.0","datatypes":["eeg"],"demographics":{"subjects_count":65,"ages":[27,22,19,22,26,23,30,21,21,21,22,23,20,21,24,23,23,24,24,24,19,21,22,19,23,23,24,22,25,22,25,24,26,22,28,18,23,19,23,23,21,18,22,23,24,20,25,26,25,23,24,21,20,20,21,24,28,25,25,24,23,23,24,19,25],"age_min":18,"age_max":30,"age_mean":22.83076923076923,"species":null,"sex_distribution":{"f":32,"m":33},"handedness_distribution":null},"experimental_modalities":null,"external_links":{"source_url":"https://openneuro.org/datasets/ds005291","osf_url":null,"github_url":null,"paper_url":null},"funding":[],"ingestion_fingerprint":"a6dfe9ae3daa7fadb9d23c82b3ac345f5c51d98af60a985ef09b901ec3b3e3ec","license":"CC0","n_contributing_labs":null,"name":"65 By ANT","readme":"1.Study introduction:\nIn this experiment, participants were initially exposed to a series of laser stimulations of varying intensities. Researchers identified the energy intensity corresponding to an average rating of 7 from the participants. Subsequently, each participant underwent 30 laser stimuli and provided verbal pain ratings one by one. The pain ratings were on a scale where 0 indicated no sensation at all, 4 indicated the onset of pain, 6 represented moderate pain, 8 indicated severe pain, and 10 denoted unbearable pain.\n2.Participant task information(description of the experiment):\nParticipants underwent laser stimulation and subsequently verbally rated the intensity of pain.\n3.Participant instructions(as exact as possible):\nParticipants were instructed to focus on the laser stimulation, keep their eyes open, and fix their gaze on the crosshairs displayed on the screen. After each laser stimulation, there is a five-second pause. Participants then rated the intensity of the pain. Subsequent trials began at random 5 seconds after the score was provided.\n4.References and links:\nNone\n5.Comment:\nAll laser markers are delayed by 100ms","recording_modality":["eeg"],"senior_author":"Hu Li","sessions":[],"size_bytes":21968960012,"source":"openneuro","study_design":null,"study_domain":null,"tasks":["65ByANT"],"timestamps":{"digested_at":"2026-04-22T12:27:36.743300+00:00","dataset_created_at":"2024-06-26T10:01:34.320Z","dataset_modified_at":"2024-06-26T14:05:42.000Z"},"total_files":65,"storage":{"backend":"s3","base":"s3://openneuro.org/ds005291","raw_key":"dataset_description.json","dep_keys":["CHANGES","README","participants.json","participants.tsv","task-65ByANT_events.json"]},"tagger_meta":{"config_hash":"4a051be509a0e3d0","metadata_hash":"a58ee4174e47862c","model":"openai/gpt-5.2","tagged_at":"2026-01-20T17:45:58.658667+00:00"},"tags":{"pathology":["Healthy"],"modality":["Tactile"],"type":["Perception"],"confidence":{"pathology":0.7,"modality":0.8,"type":0.7},"reasoning":{"few_shot_analysis":"Closest few-shot by stimulus modality is the 'Braille letters - EEG' example (Pathology=Other, Modality=Tactile, Type=Learning). It shows the convention that somatosensory stimulation delivered to the body (braille on fingers) is labeled as Modality=Tactile (even when the response is via pedal/behavior). The current dataset also uses bodily stimulation (laser-evoked pain), so the same Modality convention applies. For Type, the schizophrenia visual discrimination example illustrates that when the core aim is sensory judgment/ratings about stimuli, the label maps to Perception (not Motor/Attention). Here the core behavior is pain intensity rating after each stimulus, aligning with Perception rather than Decision-making or Affect.","metadata_analysis":"Key task/stimulus facts from the README:\n- Stimulus: \"participants were initially exposed to a series of laser stimulations of varying intensities\" and later \"each participant underwent 30 laser stimuli\".\n- Behavioral measure: \"provided verbal pain ratings one by one\" and \"rated the intensity of pain\".\n- Task context: \"keep their eyes open, and fix their gaze on the crosshairs displayed on the screen\" (visual fixation is present but the primary stimulus is laser-evoked pain).\n- Timing note: \"All laser markers are delayed by 100ms\" (confirms laser events are the primary event markers).","paper_abstract_analysis":"No useful paper information.","evidence_alignment_check":"Pathology:\n1) Metadata says: no diagnosis/clinical recruitment is mentioned; only \"participants\" and their pain ratings are described.\n2) Few-shot pattern suggests: when no disorder is stated, label as Healthy.\n3) Alignment: ALIGN.\n\nModality:\n1) Metadata says: \"laser stimulations\" with \"pain ratings\" (nociceptive/somatosensory stimulation).\n2) Few-shot pattern suggests: braille/finger stimulation maps to Tactile; intraoperative peripheral nerve stimulation also indicates somatosensory channel rather than visual/auditory.\n3) Alignment: ALIGN.\n\nType:\n1) Metadata says: the task is to \"rated the intensity of the pain\" after each laser stimulus, i.e., sensory intensity estimation.\n2) Few-shot pattern suggests: sensory discrimination/ratings map to Perception (e.g., visual discrimination task labeled Perception).\n3) Alignment: ALIGN.","decision_summary":"Pathology (top-2):\n- Healthy: Supported by absence of any clinical descriptors (only generic \"participants\"), consistent with catalog convention for normative cohorts.\n- Unknown: Possible if participant population is not specified at all.\nChosen: Healthy. Evidence alignment: ALIGN. Confidence=0.7 because it is inferred from lack of pathology statements rather than an explicit 'healthy' claim.\n\nModality (top-2):\n- Tactile: Supported by \"laser stimulations\" producing pain and requiring pain intensity ratings (somatosensory/nociceptive input).\n- Visual: Visual fixation crosshairs are present (\"fix their gaze on the crosshairs\"), but this is not the primary stimulus.\nChosen: Tactile. Evidence alignment: ALIGN. Confidence=0.8 due to multiple explicit stimulus quotes indicating laser-evoked somatosensory stimulation.\n\nType (top-2):\n- Perception: Core construct is pain intensity perception/estimation (\"rated the intensity of pain\").\n- Affect: Pain has affective components, but the explicit task is sensory intensity rating rather than emotion induction/regulation.\nChosen: Perception. Evidence alignment: ALIGN. Confidence=0.7 (clear rating-of-stimulus design, but no explicit statement of study aim beyond procedure)."}},"computed_title":"65 By ANT","nchans_counts":[{"val":32,"count":65}],"sfreq_counts":[{"val":1000.0,"count":65}],"stats_computed_at":"2026-04-22T23:16:00.309262+00:00","total_duration_s":171628.00400000002,"author_year":"Xiangyue2024_65_ANT","canonical_name":null}}