TESA user manual
  • Introduction
  • Installation, getting started, and reporting bugs
    • A quick intro to TESA
    • A quick intro to Matlab
    • A quick intro to EEGLAB
    • Reporting bugs
  • Overview of TMS-EEG analysis
  • Find and mark TMS pulses
    • Find TMS pulses
    • Find TMS pulses (alternative)
    • Fix TMS pulse latencies
  • Remove and interpolate TMS pulse artifacts
    • Remove TMS pulse artifact
    • Interpolate removed data
  • Remove TMS-evoked muscle activity and other artifacts
    • FastICA
    • Component classification (TESA)
    • Plot and remove components
    • Enhanced deflation method (EDM)
    • PCA compression
    • PCA suppression
    • Detrend
    • SSP–SIR
    • SOUND
  • Filter data
    • Butterworth filter
    • Median filter
  • Analyse TMS-evoked potentials
    • Extract TEPs
    • Find and analyse TEP peaks
    • Output peak analysis
    • Output peak analysis (group)
  • Plot TMS-evoked potentials
    • Plot data
    • Plot data (group)
  • Example analysis pipelines
  • TESA functions under development
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Plot TMS-evoked potentials

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Last updated 4 years ago

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In addition to the numerous plotting options available through EEGLAB, TESA includes a function for plotting TMS-evoked potentials (TEPs) averaged across trials (analogous to event-related potentials or ERPs). The tesa_plot function can plot all electrodes (also known as butterfly plots), single electrodes, region of interest (ROI) analyses and global mean field amplitude (GMFA) analyses. For single and ROI, a shaded bar representing the 95% confidence intervals calculated across trials can also be included. If peak analysis has been performed on ROI or GMFA, these can also be plotted. Users can also set the x and y axis limits.

A second function for plotting grand-average TEPs (TEPs averaged across participants) called tesa_plotgroup is also included. To use this function, all participant files must be in the same folder without any other files. Furthermore, the electrodes and ROI/GMFA analyses must be identical across participants. 95% confidence intervals calculated across participants can also be included in single electrode and ROI plots.

Example of different TEP plotting option. Top left: Butterfly plot (all electrodes). Top right: P1 electrode with confidence intervals. Bottom left: region of interest (P1, P3, CP1 and CP3) with peak analysis. Bottom right: Global mean field amplitude with peak analysis.