{"success":true,"database":"eegdash","data":{"_id":"69de6d29897a7725c6702347","dataset_id":"nm000104","associated_paper_doi":null,"authors":["Viswanath Sivakumar","Jeffrey Seely","Alan Du","Sean R. Bittner","Adam Berenzweig","Anuoluwapo Bolarinwa","Alexandre Gramfort","Michael I. Mandel"],"bids_version":"1.11.0","canonical_name":null,"contact_info":null,"contributing_labs":null,"data_processed":false,"dataset_doi":"10.82901/nemar.nm000104","datatypes":["emg"],"demographics":{"subjects_count":108,"ages":[],"age_min":null,"age_max":null,"age_mean":null,"species":null,"sex_distribution":null,"handedness_distribution":null},"experimental_modalities":null,"external_links":{"source_url":"https://nemar.org/dataexplorer/detail/nm000104","osf_url":null,"github_url":null,"paper_url":null},"funding":["Meta Reality Labs"],"ingestion_fingerprint":"154da553b981a2a668b3b17f0c53bd5204be3ba23bbdc92ecca4dc0222db975a","license":"CC-BY-NC-SA-4.0","n_contributing_labs":null,"name":"emg2qwerty: A Large Dataset with Baselines for Touch Typing using Surface Electromyography","readme":"# emg2qwerty: Touch Typing from Surface Electromyography\n## Overview\n**Dataset**: emg2qwerty - Touch typing from wrist-based surface electromyography\n**Task**: Touch typing on QWERTY keyboard\n**Participants**: 108 subjects\n**Sessions**: 1,135 total (average 10 per subject, range 1-18)\n**Duration**: 346.4 hours total (9.5-47.5 min per session)\n**Publication**: Sivakumar et al., 2024 - \"emg2qwerty: A Large Dataset with Baselines for Touch Typing using Surface Electromyography\"\n### Purpose\nThis dataset captures wrist-based sEMG signals during touch typing on a physical keyboard. The goal is to enable keyboard-free text input by decoding typing intent directly from neuromuscular activity, with applications in AR/VR, mobile computing, and brain-computer interfaces.\nThis is the largest public sEMG dataset to date, specifically designed to study:\n- Cross-user generalization\n- Cross-session adaptation (domain shift from electrode placement)\n- Sequence-to-sequence learning (analogous to automatic speech recognition)\n- High-bandwidth neuromotor interfaces\n## Dataset Details\n### Participants\n**Sample size**: 108 participants\n**Demographics**: Not available (age, sex, handedness marked as n/a)\n**Screening**: Touch typists with >90% correct finger-to-key mapping\n**Typing speed**: 130-439 keys/min (mean: 265 keys/min, ~4.4 keys/sec)\n### Hardware\n**Device**: sEMG Research Device (sEMG-RD)\n**Configuration**: Two wristbands (left and right wrists)\n**Channels**: 32 total (16 per wrist)\n**Sampling rate**: 2000 Hz\n**Bit depth**: 12 bits\n**Dynamic range**: ±6.6 mV\n**Bandwidth**: 20-850 Hz\n**Connectivity**: Bluetooth\n**Electrode type**: Dry gold-plated differential pairs\n### Recording Setup\n**Keyboard**: Apple Magic Keyboard (US English)\n**Text prompts**:\n- Random words from dictionary\n- Sentences from English Wikipedia\n- Filtered for offensive terms\n- Lowercase with basic punctuation only\n**Ground truth**: Keylogger recording key-down and key-up timestamps (±0.5 ms precision)\n**Backspace usage**: Allowed (natural typing behavior)\n### Session Protocol\n1. Participant dons two sEMG-RDs (one per wrist)\n2. Types prompted text on physical keyboard\n3. Keylogger records all keystrokes with timestamps\n4. sEMG signals streamed via Bluetooth\n5. Between sessions: Bands doffed and re-donned (realistic electrode placement variability)\n**Session duration**: 9.5-47.5 minutes (depends on typing speed)\n**Inter-session protocol**: Complete band removal and replacement to simulate real-world usage\n## Data Contents\n### Files per Session\n```\nsub-XXXXXXXX/ses-YYYYYYYYYY/emg/\n├── sub-XXXXXXXX_ses-YYYYYYYYYY_task-typing_emg.edf\n├── sub-XXXXXXXX_ses-YYYYYYYYYY_task-typing_emg.json\n├── sub-XXXXXXXX_ses-YYYYYYYYYY_task-typing_channels.tsv\n├── sub-XXXXXXXX_ses-YYYYYYYYYY_task-typing_events.tsv\n└── sub-XXXXXXXX_ses-YYYYYYYYYY_electrodes.tsv\n```\n### Channel Configuration\n**Total channels**: 32\n- EMG0-EMG15: Left wrist\n- EMG16-EMG31: Right wrist\n**Channel naming**: Unique across entire dataset (EMG0-EMG31)\n**Electrode naming**: E0-E15 (reused for left and right wrists)\n**Reference**: Bipolar (differential sensing)\n**channels.tsv columns**:\n- `name`: Channel identifier (EMG0-EMG31)\n- `type`: EMG\n- `units`: V\n- `signal_electrode`: Physical electrode name (E0-E15)\n- `reference`: bipolar\n- `group`: left or right (wrist)\n- `target_muscle`: forearm muscles\n**electrodes.tsv columns**:\n- `name`: Electrode identifier (E0-E15)\n- `x`, `y`, `z`: 3D coordinates (percent units, no decimals)\n- `coordinate_system`: leftForearm or rightForearm\n- `group`: left or right\n### Events\n**events.tsv contains**:\n- **Keystroke events**: Individual key-press and key-release\n  - `type`: keystroke_X (where X is the key character)\n  - `latency`: Sample index of keystroke\n  - `duration`: Samples from press to release\n  - `key`: Character typed\n- **Prompt events**: Text prompts shown to participant\n  - `type`: prompt\n  - `prompt_text`: Displayed text\n**Total keystrokes**: 5,262,671 across all sessions\n### Coordinate Systems\n**Two separate coordinate systems** (space entities):\n**Left Forearm** (`space-leftForearm_coordsystem.json`):\n```\nEMGCoordinateSystem: Other\nEMGCoordinateUnits: percent\nX: USP → RSP (0-100%)\nY: Right-hand rule perpendicular (limits: Olecranon Process → Cubital Fossa)\nZ: Midpoint RSP-USP → Lateral Humeral Epicondyle\n```\n**Right Forearm** (`space-rightForearm_coordsystem.json`):\n```\nEMGCoordinateSystem: Other\nEMGCoordinateUnits: percent\nX: RSP → USP (0-100%, reversed from left)\nY: Right-hand rule perpendicular (limits: Olecranon Process → Cubital Fossa)\nZ: Midpoint RSP-USP → Lateral Humeral Epicondyle\n```\n**Anatomical landmarks**:\n- RSP: Radial Styloid Process\n- USP: Ulnar Styloid Process\n- LHE: Lateral Humeral Epicondyle\n**Note**: Same physical device worn on both wrists with reversed differential polarity\n## Signal Processing\n### Preprocessing Applied\n1. **High-pass filtering**: 40 Hz cutoff (removes DC drift, motion artifacts)\n2. **Clock drift correction**: Synchronization between devices and laptop\n3. **Temporal alignment**: Left/right wristband sample alignment (±0.5 ms)\n4. **Irregular sampling handling**: Resampling applied when deviation >1%\n### Signal Characteristics\n**Typical features**:\n- Muscle activation precedes keystroke by ~tens of milliseconds\n- Different muscles activate for different fingers\n- \"Co-articulation\" effects: sEMG affected by adjacent keystrokes\n- Bigram/trigram context important for fast typists\n**Receptive field**: Models typically need ~1 second context\n## Baseline Performance\n### Published Results (Sivakumar et al., 2024)\n**Generic Model** (100 training users):\n- Validation CER: 52.10 ± 5.54% (with 6-gram LM)\n- Test CER: 51.78 ± 4.61% (with 6-gram LM)\n- **Interpretation**: Unusable without personalization\n**Personalized Model** (finetuned from generic):\n- Validation CER: 8.31 ± 3.19% (with 6-gram LM)\n- Test CER: 6.95 ± 3.61% (with 6-gram LM)\n- **Best user**: 3.16% CER\n- **Usability threshold**: ~10% CER\n**Model architecture**: Time Depth Separable ConvNets (TDS)\n**Loss function**: Connectionist Temporal Classification (CTC)\n**Language model**: 6-gram modified Kneser-Ney (trained on WikiText-103)\n### Key Findings\n1. **Generalization emerges at scale**: 100+ users needed for meaningful representations\n2. **Personalization essential**: Generic model alone has >50% CER\n3. **Domain shift is severe**: Cross-user variation much larger than cross-session\n4. **No obvious user clusters**: Every user requires individual adaptation\n## Data Splits\n### Benchmark Setup (from paper)\n**Training set**: 100 users (all sessions except 2 validation per user)\n**Validation set**: 2 sessions from each of 100 training users\n**Test set**: 8 held-out users\n  - Each test user: Multiple sessions split into train/val/test\n  - Used for personalization experiments\n**Note**: This split ensures test users don't influence generic model hyperparameters\n## Use Cases\n### Machine Learning\n- **Sequence-to-sequence learning**: Similar to ASR but with different generative process\n- **Domain adaptation**: Cross-user, cross-session generalization\n- **Transfer learning**: Generic models with user-specific fine-tuning\n- **Few-shot learning**: Data-efficient personalization\n- **Language modeling**: Backspace-aware beam search decoding\n### Neuroscience\n- **Motor control**: Understand muscle coordination during fine motor tasks\n- **Motor learning**: Track typing skill changes across sessions\n- **Neuromuscular variability**: Study individual differences in muscle recruitment\n### Applications\n- **Keyboard-free typing**: Text entry without physical keyboard\n- **AR/VR interfaces**: Text input for head-mounted displays\n- **Silent communication**: Private text entry in public spaces\n- **Accessibility**: Alternative input for users with limited mobility\n## Known Issues and Limitations\n### By Design\n- **Touch typing required**: Not representative of hunt-and-peck typists\n- **English only**: Language-specific\n- **Physical keyboard**: Not actual keyboard-free typing\n- **Typing style variation**: Individual strategies differ (especially non-fluent typists)\n- **No demographic data**: Age, sex, handedness not collected\n### Technical\n- **Domain shift**: Large variations across users and sessions\n- **Signal amplitude**: Varies with typing force (not normalized)\n- **Backspace handling**: More complex than speech (can modify history)\n- **Hardware unavailable**: sEMG-RD not commercially available\n### Data Quality\n- **Irregular sampling**: Some sessions required resampling (up to 9290% deviation detected)\n- **Electrode placement**: Intentionally varies across sessions (creates realistic challenge)\n- **Session length**: Varies by typing speed (9.5-47.5 min)\n## Access and Contact\n**Original data**: https://github.com/facebookresearch/emg2qwerty\n**BIDS conversion**: Custom MATLAB tools using EEGLAB BIDS plugin\n**Data curator**: Yahya Shirazi, SCCN, INC, UCSD\n**Contact**: See original publication for corresponding author\n## License\nNon-Commercial, Share Alike CC-BY-NC-SA 4.0\n## Citation\n```\nSivakumar, V., Seely, J., Du, A., Bittner, S.R., Berenzweig, A.,\nBolarinwa, A., Gramfort, A., & Mandel, M.I. (2024).\nemg2qwerty: A Large Dataset with Baselines for Touch Typing using Surface Electromyography.\narXiv:2410.20081. https://github.com/facebookresearch/emg2qwerty\n```\n## Data Curator\n**Yahya Shirazi**\nSCCN (Swartz Center for Computational Neuroscience)\nINC (Institute for Neural Computation)\nUniversity of California San Diego\n## Version History\n**v1.0** (2025-10-01): Initial BIDS conversion\n---\n**BIDS Version**: 1.11 | **EMG-BIDS**: BEP-042 | **Updated**: Oct 1, 2025","recording_modality":["emg"],"senior_author":null,"sessions":["1597354281","1597355141","1597357485","1597363426","1597369024","1597444340","1597560433","1597699312","1597700134","1597701568","1597712595","1597730688","1597766237","1597767815","1597770803","1597772221","1597772298","1597773750","1597775258","1597783506","1597785842","1597786375","1597786596","1597787379","1597788565","1597789985","1597805065","1597842881","1597844765","1597845008","1597849380","1597850870","1597852672","1597861817","1597863691","1597863839","1597865170","1597865878","1597866381","1597868334","1597869769","1597870032","1597870936","1597874325","1597875875","1597888546","1597890158","1597891384","1597930211","1597931886","1597932977","1597933955","1597936399","1597937556","1597938979","1597940034","1597940461","1597949725","1597950880","1597953285","1597954522","1597954965","1597955521","1597955772","1597956396","1597957074","1597959246","1597960126","1597962037","1597963893","1597966014","1597966137","1597967205","1597967593","1597968506","1597969358","1597970441","1597971779","1597973325","1597973846","1597974992","1597975826","1598019221","1598020580","1598026612","1598031035","1598031256","1598360760","1598362722","1598383750","1598441577","1599179467","1599261941","1599610329","1608048052","1608060350","1608063969","1608065648","1608076292","1608079295","1608079307","1608082012","1608086491","1608091848","1608130062","1608131922","1608132208","1608132411","1608133366","1608135307","1608143094","1608145646","1608150770","1608150932","1608152997","1608161945","1608164146","1608164452","1608164810","1608166548","1608167563","1608169994","1608171814","1608173616","1608174768","1608176707","1608179548","1608181014","1608183163","1608214211","1608214216","1608216650","1608217769","1608219667","1608220409","1608221679","1608222019","1608223018","1608223848","1608224568","1608226085","1608227413","1608231095","1608232765","1608235210","1608236267","1608237222","1608237739","1608238262","1608240199","1608240992","1608243953","1608244656","1608247041","1608247853","1608249257","1608249779","1608252086","1608252457","1608254014","1608254480","1608255062","1608257601","1608260483","1608262692","1608263300","1608266139","1608266197","1608268481","1608301112","1608303536","1608304463","1608305222","1608306627","1608306935","1608307868","1608308155","1608309975","1608311446","1608312289","1608314177","1608317421","1608318986","1608329111","1608329289","1608329697","1608331238","1608331241","1608332019","1608334098","1608335464","1608335823","1608343075","1608343176","1616099637","1616099846","1616100756","1616101267","1616101960","1616103127","1616118339","1616119136","1616120121","1616121169","1616121980","1616156963","1616158080","1616159532","1616160805","1616161792","1616168259","1616172322","1616176587","1616181237","1616182233","1616183500","1616186516","1616187479","1616191090","1616192817","1616198044","1616204802","1616205930","1616207279","1616207795","1616210699","1616211722","1616211954","1616213002","1616213888","1616252223","1616253746","1616257704","1616266960","1616268131","1616268775","1616269232","1616270483","1616272549","1616275118","1616276731","1616278248","1616278345","1616279920","1616289679","1616291078","1616292149","1616300617","1616303544","1616344863","1616347488","1616351661","1616354673","1616355934","1616367680","1616369080","1616371827","1616371903","1616374087","1616375785","1616376235","1616379938","1616380561","1616382076","1616382191","1616382958","1616384296","1616385560","1616415954","1616417052","1616418247","1616419564","1616428014","1616429212","1616436357","1616437692","1616439005","1616440824","1616441073","1616441252","1616441800","1616442020","1616442805","1616443154","1616446664","1616448968","1616450291","1616451433","1616452683","1616455352","1616456753","1616465272","1616467313","1616468379","1616469418","1616500162","1616501697","1616503529","1616510910","1616514852","1616515853","1616526141","1616528083","1616532059","1616549442","1616551201","1616556514","1616557756","1616558999","1616560260","1616561761","1616587052","1616588305","1616589503","1616615859","1616617240","1616618793","1616620928","1616621995","1616622167","1616623350","1616629734","1616630863","1616644833","1616684511","1616696081","1616718265","1616725006","1616726730","1616729010","1616772022","1616782321","1616791366","1616792557","1616808681","1616814139","1616883924","1616884933","1616949969","1616951540","1620143027","1620146048","1620147413","1620166110","1620167558","1620168603","1620169758","1620219374","1620220584","1620221511","1620221784","1620222951","1620223835","1620225251","1620241064","1620243335","1620244958","1620247429","1620254024","1620255337","1620261943","1620263793","1620265462","1620268348","1620269513","1620270388","1620271004","1620272448","1620313646","1620314302","1620315762","1620316722","1620317263","1620317369","1620317400","1620318614","1620319066","1620319598","1620319755","1620324384","1620325584","1620326540","1620327471","1620328472","1620329526","1620330762","1620332034","1620333243","1620334499","1620335640","1620336043","1620339484","1620341408","1620346060","1620347552","1620348880","1620352912","1620354411","1620356359","1620357300","1620358310","1620358581","1620394533","1620396791","1620398244","1620402687","1620403780","1620407468","1620408434","1620409316","1620410546","1620418414","1620420118","1620422333","1620424622","1620426698","1620427344","1620427350","1620428573","1620428861","1620429735","1620431033","1620432166","1620432292","1620433140","1620433618","1620434550","1620435494","1620435934","1620438158","1620486839","1620489293","1620512662","1620513680","1620514060","1620515356","1620516241","1620516586","1620517727","1620518921","1620519934","1620520016","1620521507","1620526321","1620530617","1620578733","1620583533","1620588853","1620589834","1620590708","1620591601","1620592434","1620596152","1620598524","1620599633","1620600773","1620601925","1620603208","1620603757","1620604030","1620604973","1620605903","1620606727","1620607724","1620608519","1620609567","1620610806","1620610950","1620612919","1620615181","1620617085","1620617501","1620617678","1620627827","1620656420","1620656968","1620658185","1620660678","1620662598","1620662699","1620664854","1620666654","1620671114","1620678149","1620697183","1620697519","1620698862","1620700885","1620736751","1620738513","1622155672","1622157155","1622158544","1622173993","1622177569","1622183519","1622224570","1622225896","1622227173","1622234812","1622258752","1622263816","1622269215","1622298720","1622305622","1622306944","1622308265","1622325623","1622328892","1622394534","1622395831","1622397174","1622404182","1622410421","1622439220","1622474602","1622487277","1622488883","1622490506","1622505807","1622511018","1622516512","1622518090","1622550442","1622558864","1622560504","1622564950","1622569285","1622570799","1622572256","1622577304","1622579021","1622579353","1622579731","1622580462","1622581233","1622581428","1622581862","1622582046","1622583022","1622583254","1622591498","1622591765","1622594581","1622595651","1622596014","1622596679","1622599829","1622601127","1622610804","1622611908","1622613022","1622637375","1622639948","1622639959","1622640589","1622641909","1622642271","1622642738","1622643143","1622643625","1622647688","1622651434","1622651758","1622656863","1622658211","1622661398","1622661744","1622673280","1622674754","1622675546","1622676489","1622678237","1622678315","1622679967","1622680770","1622681518","1622681529","1622682029","1622682789","1622682886","1622683324","1622684529","1622686427","1622687625","1622689221","1622689579","1622690794","1622704535","1622719390","1622728097","1622731432","1622731868","1622732451","1622732820","1622732843","1622733000","1622733598","1622734419","1622734810","1622734907","1622735739","1622738256","1622742733","1622743878","1622744198","1622745873","1622748939","1622750330","1622756102","1622756354","1622757540","1622757645","1622762332","1622763510","1622764398","1622765208","1622765527","1622765854","1622766366","1622766673","1622767315","1622767371","1622767443","1622768663","1622769045","1622769409","1622769965","1622772545","1622773078","1622790752","1622792779","1622794687","1622810442","1622813570","1622814631","1622815841","1622816410","1622817314","1622818475","1622819427","1622819745","1622822193","1622823292","1622824503","1622830604","1622832254","1622832750","1622836017","1622836862","1622837386","1622838053","1622838535","1622839353","1622840528","1622841817","1622842654","1622845650","1622847720","1622848403","1622849830","1622850059","1622851188","1622856118","1622861066","1622862148","1622863166","1622876714","1622878263","1622884635","1622885888","1622889105","1622918026","1622920766","1622927844","1622929435","1622934798","1622936674","1622939810","1622940871","1622942786","1622943281","1622944599","1622944691","1622945442","1622947569","1622950460","1622951874","1622954824","1622992383","1622994080","1622998792","1623000832","1623004178","1623010362","1623034880","1623036073","1623037283","1623040032","1623042199","1623077679","1623078948","1623085643","1623092496","1623094558","1623096368","1623112565","1623113636","1623325882","1623327653","1623332648","1623334539","1623342960","1623349802","1623351478","1623412184","1623975325","1623980364","1623986110","1623987116","1624037768","1624039299","1624039669","1624041419","1624055897","1624057298","1624061584","1624062318","1624064019","1624064824","1624065234","1624066541","1624071711","1624095464","1624160478","1624180352","1624191951","1624193579","1624200599","1624210384","1624212652","1624214717","1624222453","1624239512","1624242267","1624266395","1624283084","1624284730","1624286280","1624294612","1624299668","1624306452","1624308389","1624310938","1624312819","1624314612","1624328214","1624328420","1624329801","1624330758","1624331225","1624331881","1624334165","1624370426","1624372027","1624373621","1624374313","1624375338","1624376337","1624390612","1624392708","1624397506","1624397777","1624398609","1624399142","1624400844","1624402500","1624404327","1624406140","1624408540","1624412868","1624416037","1624417224","1624418454","1624458754","1624459804","1624460784","1624469032","1624469276","1624469503","1624471140","1624472940","1624472983","1624478264","1624481309","1624482051","1624483156","1624485024","1624494826","1624501134","1624502537","1624502705","1624503685","1624503974","1624505114","1624541148","1624542595","1624543038","1624543678","1624544413","1624544675","1624545557","1624560243","1624561422","1624569726","1624571389","1624571521","1624572957","1624573252","1624573663","1624574859","1624576425","1624577310","1624577618","1624586972","1624588160","1624588439","1624589274","1624591378","1624631771","1624643865","1624644976","1624646157","1624647117","1624647687","1624649228","1624664759","1624669787","1624672226","1624676406","1624677607","1624725937","1624733313","1624733349","1624734677","1624735932","1624736315","1624738524","1624740609","1624742058","1624755000","1624757106","1624758976","1624762988","1624813226","1624814690","1624817883","1624818726","1624819700","1624820489","1624821799","1624823759","1624828365","1624829767","1624851730","1624854950","1624879406","1624881720","1624886238","1624888732","1624890242","1624891783","1624906474","1624908153","1624908497","1624909280","1624910463","1624910921","1624911458","1624911545","1624913275","1624938511","1624940139","1624941912","1624966296","1624968143","1624969939","1625009944","1625011326","1625012791","1625016834","1625018336","1625019085","1625019792","1625020703","1625021233","1625022199","1625052370","1625054268","1625056036","1625060458","1625061686","1625062720","1625063637","1625064220","1625065725","1625073228","1625075022","1625076606","1625077781","1625079089","1625079117","1625101847","1625102665","1625104858","1625123560","1625140038","1625144610","1625146259","1625148087","1625152598","1625154024","1625160224","1625160605","1625161764","1625162322","1625162999","1625163131","1625163303","1625164238","1625164262","1625165165","1625165515","1625166763","1625167700","1625168242","1625168924","1625170158","1625170358","1625171485","1625172683","1625172922","1625174271","1625176953","1625179427","1625180586","1625181114","1625182718","1625186078","1625187115","1625188596","1625189027","1625202006","1625203486","1625204799","1625205671","1625206745","1625216034","1625217048","1625218000","1625223938","1625226356","1625228215","1625237824","1625239253","1625239385","1625240485","1625242347","1625248094","1625249096","1625250033","1625251555","1625252789","1625254560","1625258895","1625260829","1625264339","1625266146","1625268003","1625287876","1625300269","1625301278","1625302365","1625303379","1625308744","1625309912","1625323259","1625325045","1625326774","1625329289","1625330437","1625331595","1625342169","1625342969","1625344411","1625362025","1625362432","1625364156","1625364230","1625365457","1625366193","1625422253","1625423457","1625424668","1625432885","1625432961","1625434046","1625434505","1625434840","1625435299","1625436391","1625436434","1625436710","1625437332","1625441433","1625443841","1625444428","1625445736","1625445806","1625446939","1625507059","1625508863","1625522955","1625524718","1625527994","1625529086","1625530232","1625533145","1625534309","1625535638","1625542180","1625597882","1625703304","1625724796","1625725729","1625769234","1625770638","1625787067","1625788266","1625788888","1625790182","1625794440","1625877023","1625878379","1625880321","1625922993","1625924480","1625924481","1625925714","1625926199","1625927058","1625927806","1626025840","1626027359","1626028768","1626040887","1626043356","1626142101","1626142378","1626143591","1626144587","1626144962","1626145943","1626146345","1626147138","1626147915","1626223212","1626224990","1626229716","1626230138","1626231140","1626231561","1626232810","1626232991","1626234235","1626239426","1626240914","1626251861","1626288748","1626292878","1626294221","1626294522","1626295601","1626296384","1626296912","1626301312","1626310003","1626312413","1626316729","1626318627","1626321649","1626554255","1626555661","1626557011","1626915176","1626916256","1626917264","1626918746","1626920403","1626921849","1626975551","1626978524","1626990242","1626992906","1627001995","1627003020","1627004019","1627006496","1627007818","1627009007","1627056955","1627059293","1627067205","1627070079","1627072422","1627075462","1627092715","1627094128","1627098924","1627101026","1627102661","1627104451","1627139563","1627142755","1627150209","1627152278","1627238654","1627263510","1627265353","1627266915","1627270191","1627273736","1627275192","1627277895","1627579674"],"size_bytes":239744981731,"source":"nemar","storage":{"backend":"nemar","base":"s3://nemar/nm000104","raw_key":"dataset_description.json","dep_keys":["README.md","participants.json","participants.tsv","space-leftForearm_coordsystem.json","space-rightForearm_coordsystem.json","task-typing_events.json"]},"study_design":null,"study_domain":null,"tasks":["typing"],"timestamps":{"digested_at":"2026-04-30T14:08:25.193413+00:00","dataset_created_at":null,"dataset_modified_at":"2026-02-25T14:27:29Z"},"total_files":1136,"author_year":"Sivakumar2024","name_source":"canonical","nchans_counts":[{"val":32,"count":1136}],"computed_title":"emg2qwerty: A Large Dataset with Baselines for Touch Typing using Surface Electromyography","sfreq_counts":[{"val":2000.0,"count":1136}],"stats_computed_at":"2026-05-01T13:49:34.660142+00:00","total_duration_s":1246768.0115}}