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04. Motor Hotspot Search

Umair Hassan edited this page Dec 25, 2019 · 1 revision

Motor Hotspot Search function of the BEST Toolbox, trigger the stimulating device on trial by trial basis in a given inter-trial-interval and presents you online results of MEPs in order to visualize the MEP shape and its amplitude stability at a given hotspot.

Setting Stimulation Parameters

  1. Input Device: Select the input device using drop down menu from previously added devices
  2. Output Device: Select the output device using drop down menu from previously added devices
  3. Display EMG Channels: Type the channel name as a string in order to visualize its online results e.g. 'APBr'. Note that the channel name must resolve to the name in your streaming data
  4. No. of Trials: Total number of trials e.g. 100
  5. Inter Trial Interval: ITI scalar, or a range in seconds e.g. 4 or [4 6]
  6. MEP onset (ms): The lower and upper limit of MEP search window in ms. MEP is searched using this update-able window and its amplitud and other measures of spread are stored in the data
  7. Pre-Post Stim Extract (ms): The lower and upper limit of EMG data to extract and save in the backend in ms
  8. Pre-Post Stim Plot (ms): The lower and upper limit of EMG data to plot online in ms
  9. Y Axis Max/Min: Limites of plot's Y axis [Lower Upper] in micro-volts
  10. Font Size: Font size of annotations on plots
  11. Trial No for Mean MEP Amp: The no of last N trials to avg and annotate on plot

Starting the Measurement

To start a particularly filled measurement, just press the "Run" button. The measurement can be stopped, paused/unpaused and some of the editable parameters such as Font and YAxis limits can be updated on the runtime.

An instance of the completed filled stimulation parameters panel is shown below.