There are 2 studies that match your criteria.
Criteria: Freq Range=300 kHz - 300 GHz (RF/mmW/THz),Study Type=Human / Provocation,Study Subtype=Signaling (Ca++/Ion Efflux, Neuron Conduction/channels, Muscle Contraction),Status=Completed Without Publication

Details - Project ID 152
Lab	EME Australia Pty Ltd, Australia
Study Design	900 MHz (AMPS) exposure to humans and analysis of on nerve conduction velocity
Summary	No effects on conduction velocity and latency of ulnar and facial nerves or blink reflex
Citation
Details - Project ID 278
Lab	FEMU- RWTH Aachen FRG
Study Design	10 KHz, 1.8 GHz (CW, GSM, CDMA) exposure to humans and analysisi of nerve stimulation and muscle contraction
Summary	Preliminary increases in EMG and perception under certain exposure conditions
Citation