Monosynaptic spinal reflexes elicited at various phases of the EEG alpha cycle

Relationships between the phase of EEG alpha waves and motor activities have been reported in the literature. In this study such a relation was investigated for electrically or mechanically evoked monosynaptic reflexes in the soleus muscle of normal humans. EEG alpha activity, derived from electrodes widespread over the ipsilateral and contralateral hemispheres, was tested but no relationships between alpha phase and reflex amplitudes were found.