EEG Spectral Power and ERD Data from Contralateral tDCS Study

Comprising electroencephalographic (EEG) data from 20 right-handed healthy volunteers aged 21 to 32. It was collected to assess the interhemispheric effects of transcranial direct current stimulation (tDCS) on spectral power and event-related desynchronization (ERD) during motor imagery tasks.

Use Cases

• Analyze spectral power in theta, alpha, and beta bands under rest and motor imagery conditions to assess tDCS effects.
• Compare event-related desynchronization (ERD) magnitudes in alpha and beta bands between anodal, cathodal, and sham tDCS conditions.
• Evaluate the time-dependent effects of tDCS on contralateral EEG spectral power using topographical t-value maps.
• Investigate the relationship between stimulation type (anodal vs. cathodal) and the reduction of contralateral alpha-ERD.

Strengths

• Data from a controlled study with 20 human participants.
• Includes spectral power measurements across three frequency bands (theta, alpha, beta) under two conditions (rest, motor imagery).
• Compares three distinct tDCS intervention groups: anodal, cathodal, and sham stimulation.

Limitations

• Small sample size of 20 participants limits statistical power and generalizability.
• Data is from a single-session study, lacking longitudinal assessment of tDCS effects.
• Limited to healthy, right-handed young adults (21-32 years), not representative of clinical populations like stroke patients.

Provenance

Source

Author Valeria Mondini, published via Dryad.

Collection Method

Experimental data from a human study applying tDCS over the dominant hemisphere and recording EEG from the contralateral hemisphere.

Time Range

Study period not specified; data publication date is 2020.

Freshness

Data last updated in June 2020.

Geography

Geographic location of the study is not specified.