This may or may not be related to this PR: the performance of plotting the waveforms seems to be poor enough that if a signficant number of stimuli are added, the GUI becomes nearly unresponsive. In the following video im trying to select channels, zoom, etc and there are multiple seconds between actions and refresh:

Additionally, the section controls in the channel-visualizer (probe inface GUI) are a bit clunky. Selection seems to work ok, but removal is hard. Can I make a block selection and them e.g. click or shift-click individual selected electrodes to de-select them?

Other potential ways to highlight where a pulse occurs that might be more performant

• Instead of N extra objects from all the individual pulses, plot only 1 extra line that does not show the actual amplitude, but rather is at a fixed height whenever each pulse occurs
  • This could be an impulse (i.e., a raster plot at the start of each pulse), or a unit step function (i.e., rectangular pulse that is high for the duration of the pulse, and low the rest of the time)
• Draw all lines that have a pulse anywhere with a different color than lines without a pulse
  • Currently the default line color is blue, and red for channels with invalid stimuli
  • We could add a different color (orange? green? I’m not sure) that we draw the waveform with when a pulse is present anywhere

Converted to a draft, will come back to this if needed.