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Example finger tapping fNIRS experiment

This is an example fNIRS finger tapping experiment written for the Presentation software.

Description

Three conditions are in this experiment.

  1. A silent control condition
  2. A sound in the left ear that indicates the participant should tap there left thumb to each finger on the same hand.
  3. A sound in the right ear that indicates the participant should tap there right thumb to each finger on the same hand.

Each condition is presented 30 times in a random order with an inter stimulus interval of 20-35 seconds.

Instructions to participant

Sit in a relaxed and comfortable position. When you hear a sound in your left ear tap your left thumb to each finger on the left hand for the duration of the sound. When you hear a sound in your right ear tap your right thumb to each finger on the right hand for the duration of the sound.

Analysis

You can view a waveform based analysis for this exact experiment here and a GLM based analysis here.

Setup

  1. Hit the download button at the top of the github page.
  2. Extract the zip file to a USB.
  3. Insert the USB to the Presentation computer.
  4. Add montage to nirx montages folder.
  5. Plug ER2 headphones in to Fireface UCX.
  6. Double click the .exp file.
  7. Double click the .tmws file to load audio settings (check loudness before plugging participant in).
  8. Run experiment.