Petajan, J H Behavior of single motor units during pre-shivering tone and shivering tremor. [electronic resource] - American journal of physical medicine Feb 1972 - 16-22 p. digital Publication Type: Journal Article ISSN: 0002-9491 Subjects--Topical Terms: Action PotentialsHumansMotor Neurons--physiologyMuscle ContractionMuscle TonusShiveringTremor