Biomaterial Database

Augmentative communication based on realtime vocal cord vibration detection. 2010

Tiago H Falk, and Julie Chan, and Pierre Duez, and Gail Teachman, and Tom Chau

Bloorview Research Institute/Bloorview Kids Rehab, Toronto, ON, Canada. tiago.falk@ieee.org

A binary switch based on the detection of periodic vocal cord vibrations is proposed for individuals with multiple and severe disabilities. The system offers three major advantages over existing speech-based access technologies, namely, insensitivity to environment noise, increased robustness against user-generated artifacts such as coughs, and reduced exertion during prolonged usage periods. The proposed system makes use of a dual-axis accelerometer placed noninvasively in proximity of the vocal cords by means of a neckband. Periodic vocal cord vibrations are detected using the normalized cross-correlation function computed from anterior-posterior and superior-inferior accelerometry signals. Experiments with a participant with hypotonic cerebral palsy show the proposed system outperforming a popular commercial sound-based system in terms of sensitivity, task time, and user-perceived exertion.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008838	Microcomputers	Small computers using LSI (large-scale integration) microprocessor chips as the CPU (central processing unit) and semiconductor memories for compact, inexpensive storage of program instructions and data. They are smaller and less expensive than minicomputers and are usually built into a dedicated system where they are optimized for a particular application. "Microprocessor" may refer to just the CPU or the entire microcomputer.	Computers, Personal,Microprocessors,Computer, Personal,Microcomputer,Microprocessor,Personal Computer,Personal Computers
D009333	Neck	The part of a human or animal body connecting the HEAD to the rest of the body.	Necks
D002547	Cerebral Palsy	A heterogeneous group of nonprogressive motor disorders caused by chronic brain injuries that originate in the prenatal period, perinatal period, or first few years of life. The four major subtypes are spastic, athetoid, ataxic, and mixed cerebral palsy, with spastic forms being the most common. The motor disorder may range from difficulties with fine motor control to severe spasticity (see MUSCLE SPASTICITY) in all limbs. Spastic diplegia (Little disease) is the most common subtype, and is characterized by spasticity that is more prominent in the legs than in the arms. Pathologically, this condition may be associated with LEUKOMALACIA, PERIVENTRICULAR. (From Dev Med Child Neurol 1998 Aug;40(8):520-7)	Diplegic Infantile Cerebral Palsy,Little Disease,Monoplegic Cerebral Palsy,Quadriplegic Infantile Cerebral Palsy,Spastic Diplegia,CP (Cerebral Palsy),Cerebral Palsy, Athetoid,Cerebral Palsy, Atonic,Cerebral Palsy, Congenital,Cerebral Palsy, Diplegic, Infantile,Cerebral Palsy, Dyskinetic,Cerebral Palsy, Dystonic-Rigid,Cerebral Palsy, Hypotonic,Cerebral Palsy, Mixed,Cerebral Palsy, Monoplegic, Infantile,Cerebral Palsy, Quadriplegic, Infantile,Cerebral Palsy, Rolandic Type,Cerebral Palsy, Spastic,Congenital Cerebral Palsy,Diplegia, Spastic,Infantile Cerebral Palsy, Diplegic,Infantile Cerebral Palsy, Monoplegic,Infantile Cerebral Palsy, Quadriplegic,Little's Disease,Monoplegic Infantile Cerebral Palsy,Rolandic Type Cerebral Palsy,Athetoid Cerebral Palsy,Atonic Cerebral Palsy,Cerebral Palsies, Athetoid,Cerebral Palsies, Dyskinetic,Cerebral Palsies, Dystonic-Rigid,Cerebral Palsies, Monoplegic,Cerebral Palsy, Dystonic Rigid,Cerebral Palsy, Monoplegic,Diplegias, Spastic,Dyskinetic Cerebral Palsy,Dystonic-Rigid Cerebral Palsies,Dystonic-Rigid Cerebral Palsy,Hypotonic Cerebral Palsies,Hypotonic Cerebral Palsy,Mixed Cerebral Palsies,Mixed Cerebral Palsy,Monoplegic Cerebral Palsies,Spastic Cerebral Palsies,Spastic Cerebral Palsy,Spastic Diplegias
D003143	Communication Aids for Disabled	Equipment that provides mentally or physically disabled persons with a means of communication. The aids include display boards, typewriters, cathode ray tubes, computers, and speech synthesizers. The output of such aids includes written words, artificial speech, language signs, Morse code, and pictures.	Augmentative and Alternative Communications Systems,Communication Aids for Handicapped,Communication Boards,Speech Synthesizers,Telecommunications Devices for the Deaf,TDD,TTY Telephone,Text Telecommunication,Text Telecommunication Devices,Text Telephone,Communication Board,Speech Synthesizer,Synthesizer, Speech,Synthesizers, Speech,TTY Telephones,Telecommunication Device, Text,Telecommunication Devices, Text,Telecommunication, Text,Telecommunications, Text,Text Telecommunication Device,Text Telecommunications,Text Telephones
D003199	Computer Systems	Systems composed of a computer or computers, peripheral equipment, such as disks, printers, and terminals, and telecommunications capabilities.	Computer Architecture,Computer System,Computer Systems Development,Computer Systems Evaluation,Computer Systems Organization,Real Time System,Real-Time Systems,Organization, Computer Systems,Architecture, Computer,Architectures, Computer,Computer Architectures,Computer Systems Evaluations,Development, Computer Systems,Evaluation, Computer Systems,Evaluations, Computer Systems,Real Time Systems,Real-Time System,System, Computer,System, Real Time,System, Real-Time,Systems, Computer,Systems, Real Time,Systems, Real-Time,Time System, Real,Time Systems, Real
D003662	Decision Theory	A theoretical technique utilizing a group of related constructs to describe or prescribe how individuals or groups of people choose a course of action when faced with several alternatives and a variable amount of knowledge about the determinants of the outcomes of those alternatives.	Decision Theories,Theories, Decision,Theory, Decision
D005221	Fatigue	The state of weariness following a period of exertion, mental or physical, characterized by a decreased capacity for work and reduced efficiency to respond to stimuli.	Lassitude
D005260	Female		Females
D006233	Disabled Persons	Persons with physical or mental disabilities that affect or limit their activities of daily living and that may require special accommodations.	Handicapped,People with Disabilities,Persons with Disabilities,Physically Challenged,Physically Handicapped,Physically Disabled,Disabilities, People with,Disabilities, Persons with,Disability, Persons with,Disabled Person,Disabled, Physically,Handicapped, Physically,People with Disability,Person, Disabled,Persons with Disability,Persons, Disabled