{"success":true,"database":"eegdash","data":{"_id":"6953f4249276ef1ee07a33a4","dataset_id":"ds004951","associated_paper_doi":null,"authors":["Marleen Haupt","Monika Graumann","Santani Teng","Carina Kaltenbach","Radoslaw M. Cichy"],"bids_version":"1.7.0","contact_info":["Marleen Haupt"],"contributing_labs":null,"data_processed":false,"dataset_doi":"doi:10.18112/openneuro.ds004951.v1.0.0","datatypes":["eeg"],"demographics":{"subjects_count":11,"ages":[35,48,61,39,42,52,29,41,52,55,32],"age_min":29,"age_max":61,"age_mean":44.18181818181818,"species":null,"sex_distribution":{"f":8,"m":3},"handedness_distribution":null},"experimental_modalities":null,"external_links":{"source_url":"https://openneuro.org/datasets/ds004951","osf_url":null,"github_url":null,"paper_url":null},"funding":["CI241/1-1","CI241/3-1","CI241/7-1","ERC-StG-2018-803370"],"ingestion_fingerprint":"4ab0fe4a1f36f3ca91bcd4cfa5f932d9ceb64daac4e2798496982d5eebbf8717","license":"CC0","n_contributing_labs":null,"name":"Braille letters - EEG","readme":"This dataset contains the raw EEG data accompanying the paper \"The transformation of sensory to perceptual braille letter representations in the visually deprived brain\". Please cite the above paper if you use this data.\nThe dataset includes:\nBrainvision files (.eeg, .vhdr, .vmrk) for all participants.\nPlease note, for some participants the EEG decording had to be stopped and restarted within a session. In this case, the different files are indicated as separate runs. In addition, some participants completed a second session.\nThe events files contain the onsets, durations, trial types and values for all trials in the corresponding run. Stimuli are Braille letters (B,C,D,L,M,N,V,Z) presented on Braille cells under the left and right index fingers of participants. Triggers S1-8 are letters presented to the left hand, triggers S9-16 are letters presented to the right hand.\nOther triggers:\nstarttrigger         = S100;\ntrialonset           = S101;\nstimulusonset        = S222;\ncatchtrial           = S200;\npedalpress_correct   = S253;\npedalpress_incorrect = S254;\nendtrigger           = S255;\nFor a full description of the paradigm and the employed procedures please see the paper.\nReferences for MNE BIDS conversion\n----------\nAppelhoff, S., Sanderson, M., Brooks, T., Vliet, M., Quentin, R., Holdgraf, C., Chaumon, M., Mikulan, E., Tavabi, K., Höchenberger, R., Welke, D., Brunner, C., Rockhill, A., Larson, E., Gramfort, A. and Jas, M. (2019). MNE-BIDS: Organizing electrophysiological data into the BIDS format and facilitating their analysis. Journal of Open Source Software 4: (1896). https://doi.org/10.21105/joss.01896\nPernet, C. R., Appelhoff, S., Gorgolewski, K. J., Flandin, G., Phillips, C., Delorme, A., Oostenveld, R. (2019). EEG-BIDS, an extension to the brain imaging data structure for electroencephalography. Scientific Data, 6, 103. https://doi.org/10.1038/s41597-019-0104-8","recording_modality":["eeg"],"senior_author":"Radoslaw M. Cichy","sessions":["01","02"],"size_bytes":23627351784,"source":"openneuro","study_design":null,"study_domain":null,"tasks":["letters"],"timestamps":{"digested_at":"2026-04-22T12:27:08.347992+00:00","dataset_created_at":"2024-02-06T14:30:18.699Z","dataset_modified_at":"2024-02-06T15:55:56.000Z"},"total_files":23,"storage":{"backend":"s3","base":"s3://openneuro.org/ds004951","raw_key":"dataset_description.json","dep_keys":["CHANGES","README","participants.json","participants.tsv"]},"nemar_citation_count":1,"computed_title":"Braille letters - EEG","nchans_counts":[{"val":64,"count":13},{"val":63,"count":10}],"sfreq_counts":[{"val":1000.0,"count":23}],"stats_computed_at":"2026-04-22T23:16:00.308737+00:00","tags":{"pathology":["Other"],"modality":["Tactile"],"type":["Learning"],"confidence":{"pathology":0.7,"modality":0.9,"type":0.8},"reasoning":{"few_shot_analysis":"The closest few-shot match is the example titled \"Braille letters - EEG\" (same dataset). That example maps: Pathology=Other, Modality=Tactile, Type=Learning. This provides a direct convention for how EEGDash should label a Braille letter paradigm in a visually deprived population (mapped to Pathology=Other) with tactile stimulation (Modality=Tactile) and a representation/skill-oriented Braille paradigm (Type=Learning rather than Perception).","metadata_analysis":"Key metadata facts:\n1) Population/condition framing: the README cites the accompanying paper title \"The transformation of sensory to perceptual braille letter representations in the visually deprived brain\" (implying a visually deprived/blind population rather than a standard healthy cohort).\n2) Stimulus modality: \"Stimuli are Braille letters (B,C,D,L,M,N,V,Z) presented on Braille cells under the left and right index fingers of participants.\" This is clearly tactile stimulation.\n3) Task structure/behavioral outcomes: presence of performance triggers \"pedalpress_correct = S253\" and \"pedalpress_incorrect = S254\" indicates an active task involving correct/incorrect responses to the Braille stimuli.","paper_abstract_analysis":"No useful paper information.","evidence_alignment_check":"Pathology:\n- Metadata says: \"visually deprived brain\" (paper title in README).\n- Few-shot suggests: label this dataset as \"Other\" (not Healthy) for pathology.\n- Alignment: ALIGN (both indicate a non-standard clinical/special population; mapped to Other).\n\nModality:\n- Metadata says: \"Braille letters ... presented on Braille cells under the left and right index fingers\".\n- Few-shot suggests: Tactile.\n- Alignment: ALIGN.\n\nType:\n- Metadata says: focus on \"transformation of sensory to perceptual braille letter representations\" with correctness markers (pedalpress correct/incorrect), which could plausibly be Perception or Learning depending on framing.\n- Few-shot suggests: Learning (convention for this specific dataset/paradigm).\n- Alignment: PARTIAL (metadata is somewhat ambiguous between Perception vs Learning, but the few-shot convention resolves it toward Learning; no explicit metadata contradicts Learning).","decision_summary":"Top-2 candidates and final choices:\n\nPathology:\n- Candidate 1: Other — Supported by \"visually deprived brain\" (README paper title), indicating a special population not covered by a specific listed pathology label.\n- Candidate 2: Healthy — Possible if visually deprived phrasing were merely a theoretical framing, but metadata provides no explicit statement of healthy controls.\n- Decision: Other (alignment with the matching few-shot example and the \"visually deprived\" phrasing).\n\nModality:\n- Candidate 1: Tactile — \"presented on Braille cells under the left and right index fingers\".\n- Candidate 2: Multisensory/Other — Only weakly possible, but no evidence of additional stimulus channels.\n- Decision: Tactile.\n\nType:\n- Candidate 1: Learning — Few-shot convention for this exact dataset; the study framing about transformation to perceptual representations of Braille letters is consistent with learning/representation formation.\n- Candidate 2: Perception — Could fit because subjects respond correctly/incorrectly to tactile letter stimuli.\n- Decision: Learning (few-shot convention breaks the tie; no explicit metadata contradicts this).\n\nConfidence justification:\n- Pathology 0.7: one explicit cue (\"visually deprived brain\") plus direct few-shot match.\n- Modality 0.9: multiple explicit tactile-stimulus quotes (Braille cells; index fingers; left/right hand) plus few-shot match.\n- Type 0.8: strong few-shot match for this exact dataset plus supportive framing quote (\"transformation of sensory to perceptual braille letter representations\") and task correctness events, though Perception remains a plausible runner-up."}},"total_duration_s":93336.59700000001,"tagger_meta":{"config_hash":"3557b68bca409f28","metadata_hash":"a59cb80a08db3861","model":"openai/gpt-5.2","tagged_at":"2026-04-07T09:32:40.872789+00:00"},"canonical_name":null,"name_confidence":0.72,"name_meta":{"suggested_at":"2026-04-14T10:18:35.343Z","model":"openai/gpt-5.2 + openai/gpt-5.4-mini + deterministic_fallback"},"name_source":"author_year","author_year":"Haupt2024_Braille"}}