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Enhanced long-latency reflex (LLR) in a patient with cortical myoclonus. The long latency reflex showed normal H-reflex and LLR-II responses and enhanced an LLR-I response in a patient with myoclonus. EMG signals were recorded from the abductor pollicis brevis muscle with 20% background activation. Three Hz median nerve stimulations at the motor threshold stimulation intensity were delivered, and a total of 250 trials were recorded.
