Ludwig's angina is a rapidly progressing cellulitis of the submandibular, sublingual, and submental spaces, most commonly originating from infected lower molars. The infection spreads through fascial planes rather than forming pus initially, PeerJ Developing a tablet based brain computer interface and robotic prototype for upper limb rehabilitation Principles of Vibration: Tongue, Benson H.: 9780195142464: Amazon.com: Books Principles of Vibration: Tongue, Benson H.: 9780195142464: Amazon.com: Books Principles of Vibration Benson H. Tongue Google Books Mechanical Vibration Wiley