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on007315
NEMAR copy of ds007315

tACS for Patients with Post-Stroke Anomia

Imported from OpenNeuro ds007315

EEG
Issues GitHub OpenNeuro ds007315

Compute on this dataset

Two routes today, with a third (in-browser one-click submission) landing soon.

  1. NeuroScience Gateway (NSG) portal.

    NSG runs EEGLAB / Brainstorm / MNE pipelines on supercomputing time donated by SDSC. Create an account, point a job at this dataset's S3 prefix (s3://nemar/on007315), and submit.
    nsgportal.org →

  2. Local processing with nemar-cli.

    Pull the dataset to your machine and run any toolbox locally. Honors the published version pinning. 

    npm install -g nemar-cli
nemar dataset clone on007315
cd on007315 && nemar dataset get
  3. Just the files.

    rclone, aria2c, or any HTTPS client works against data.nemar.org/on007315/ — the manifest carries presigned S3 URLs.

Direct compute access is coming soon. One-click NSG submission from this page is scoped for a follow-up phase. Tracked on nemarOrg/website#6.
DOI 10.82901/nemar.on007315
README from GitHub repository This README isn't in the version manifest yet. Showing the latest from github.com/nemarDatasets/on007315 instead.

![DOI](https://doi.org/10.82901/nemar.on007315)

Title: Transcranial Alternating Current Stimulation (tACS) for Patients with Post-Stroke Anomia: Preliminary Data on Picture Naming Performance

Dataset Description:\ This dataset includes EEG recordings from two post-stroke patients with chronic anomia who participated in an 8-week individualized neuromodulation intervention using transcranial alternating current stimulation (tACS). The intervention alternated between stimulation and non-stimulation phases every two weeks and was designed to enhance naming abilities via cortical entrainment, guided by individual EEG profiles.

Data Overview:

  • Participants: 2 individuals with post-stroke anomia (1 left-hemisphere lesion, 1 right-hemisphere lesion)
  • Sessions: EEG recorded every two weeks during the intervention (W1, W2, W4, W6, W8), and at follow-ups (W12, W20)
  • Stimulation: tACS applied during alternating weeks; frequency and montage were personalized based on initial EEG
  • Tasks: Picture naming task using a standardized set of stimuli; EEG recorded during task execution
  • Modality: EEG (recorded using Starstim-32), processed in EEGLAB and prepared for BIDS

Experimental Design:\ A single-case experimental design (SCED, ABAB type) was employed. Behavioral and EEG data were collected across 24 naming sessions and 6 EEG recording sessions per participant. The data includes tACS and no-tACS conditions.

Purpose:\ To investigate whether tACS improves naming accuracy and latency in chronic aphasia and whether those effects are sustained after intervention.

Data Notes:

  • EEG recordings are organized in BIDS format, with sessions labeled by week (e.g., week-01, week-12)
  • Session and run numbers reflect weeks of intervention

Ethics:\ All participants provided written informed consent. The study was approved by the Ethics Committee of the Medical School of Ioannina (approval nr. 49625) and conducted in accordance with the Declaration of Helsinki.

Contact:\ For questions about the dataset, contact Maria Martzoukou (<m.martzoukou@uoi.gr>)