Bioengineering class MEG demonstration ====================================== Place and time: MEG lab in A2-008 at the `Tuesday 7th of October 2025`, from 3:30 to 5:00 pm. Agenda 85min ------------ .. dropdown:: Lab tour and general equipment presentation `10min` - MEG overview - Present the KIT-SQUIDs system and OPM-MEG system - Present the liquid Helium system - Provide explanation on the MSR (Magnetically Shielded Room) - Show the computers layout and the different capabilities of the lab (eyetracker, vpixx triggers, response box, audio stimulus) - Present what experiments we will run on this day and the outline of the demonstration .. dropdown:: Prepare the participant for an MEG experiment `20min` - Perform laser scan of headhape on the participant - Place participant in MSR, explain the headcoils placed on participant head - Perform auditory check for safety .. dropdown:: SQUID sensors demonstration `5min` - Show sensitivity to noise, rapid eyeblinks, teeth pressure, phone in airplane mode on and off - Show marker measurement and explain their importance for source localization - Show reference magnetometers and explain denoising for external noise .. dropdown:: Two demonstrations: Resting state and Auditory vs Visual `20min` - Experiment 1: Resting state: Access link to code and description :ref:`Resting State` `5min` - Two blocks: a block of 10min eyes open and a second block of 10min eyes closed - Experiment 2: Auditory vs Visual vs Motor: Access link to code and description :ref:`Auditory vs Visual vs Motor` `15min` - A random sequence of 150 trials with three types of stimulus (conditions): auditory 200 Hz stimulus, visual (white flash), motor (button press) .. dropdown:: Show and discuss analysis results `30min` - Recap SQUID sensor operation, forward and inverse models, source reconstruction algorithms - Experiment 1 analysis: `Resting state: Access link to Analysis Notebook <../../6-meg-pipeline-gallery/notebooks/fieldtrip/fieldtrip_kit_restingstate.ipynb>`_ - Show higher alpha power in eyes closed than in eyes open in the alpha band (8-12Hz) - Show that this difference is better seen in the occipital region - Experiment 2 analysis: `Auditory vs Visual vs Motor experiment: Access link to Analysis Notebook <../../6-meg-pipeline-gallery/notebooks/fieldtrip/fieldtrip_kit_audio_visual_motor.ipynb>`_ - Show auditory trials activating the auditory cortex - Show visual trials activating the visual cortex - Show motor trials activating the motor cortex - Open discussion and questions from students `10min`