Add BIDS model specifications

[tsalo]

This task involves rather simple analyses. Might as well make model specifications for them to make running analyses easier and more transparent.

• Detection model (model-detection_smdl.json)
  • Break trial types in auditory, motor, and visual.
  • Model motor using onset + response_time as onset and tap_duration as duration.
  • Do we want to include tap_count divided by tap_duration as a modulator?
    • Not sure if it's worth it with a block design.
  • Standard convolution with standard HRF.
  • Contrasts for auditory > other, visual > other, and motor > other.
• Estimation model (model-estimation_smdl.json)
  • Break trial types in auditory, motor, and visual.
  • Model motor using onset + response_time as onset and tap_duration as duration.
  • Do we want to include tap_count divided by tap_duration as a modulator?
    • Not sure if parametric modulation is compatible with FIR.
  • Finite impulse response model.
  • No real need for contrasts, since we'll pull FIR estimates per condition and model those outside of fitlins.