Exploratory physiological study demonstrates crossed cerebro-cerebellar coherence via EEG and ECeG in healthy adults, highlighting non-invasive mapping of motor pathways.
Key Points
To non-invasively assess functional crossed cerebro-cerebellar connectivity during voluntary finger movements using EEG and electro-cerebellogram (ECeG) wavelet coherence.
Recorded concurrent EEG and ECeG using a 10% cerebellar extension montage in N=6 healthy adult participants performing voluntary left and right index finger movements.
Tracked finger extensor and flexor EMG to trigger movement-related averaging across a -2000 to +2000 ms window to compute wavelet coherence across frequency bands.
Demonstrated significant movement-related changes in delta/theta-band EEG-ECeG coherence between cerebral and cerebellar leads.
Showed contralateral and frontal distribution of low-frequency coherence for lateralized cerebellar seeds, alongside frontal seed coherence with posterior parietal, temporal, and primary sensorimotor cortices.