motor evoked potential, using magnetic stimulation

May 08, 2020

When stimulation is applied with a magnetic coil over the motor cortex, it is possible to elicit a small muscle twitch. This motor evoked potential can be measured with electromyography. (300 trials, 20–45 ms after stimulation, normalized by amplitude) Nice waveform! 🙂 pic.twitter.com/fl0wsYlSWr
— Natalie Schaworonkow (@nschawor) May 8, 2020

paper: realtime tms-eeg & mu phase

February 13, 2020

Sensorimotor oscillations are not passively idling, they modulate cortical excitability with behavioral consequences. Magnetic stimulation given at the trough of the EEG mu-rhythm results in much larger muscle responses compared to peak stimulation. https://t.co/tcgzQLyhlu pic.twitter.com/H1vmCjK0oD
— Natalie Schaworonkow (@nschawor) February 14, 2020

evoked responses vs. rhythms (Doelling et al., 2019)

February 14, 2022

there are different models of how the brain responds to rhythmic input, 1) by adjusting an intrinsic oscillator or 2) by a series of evoked responses. adjusting the input rate, the 2 models have different properties, exhibiting a constant or variable phase shift to the input. pic.twitter.com/Elw9qlxmP0
— Natalie Schaworonkow (@nschawor) February 14, 2022

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paper: realtime tms-eeg & mu phase

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