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What is Access Pathway

Chapter 2
Handbook of Research on Personal Autonomy Technologies and Disability Informatics
The actual sensors or input devices by which an expression of functional intent (e.g., a movement or physiological change) is transduced into an electrical signal.
Published in Chapter:
Nascent Access Technologies for Individuals with Severe Motor Impairments
Sarah Power (University of Toronto, Canada), Saba Moghimi (University of Toronto, Canada), Brian Nhan (University of Toronto, Canada), and Tom Chau (University of Toronto, Canada)
Copyright: © 2011 |Pages: 20
DOI: 10.4018/978-1-60566-206-0.ch002
Abstract
As the number of individuals without physical access to communication or environmental interaction escalates, there are increasing efforts to uncover novel and unconventional access pathways. In this chapter, we introduce three emerging access technologies for individuals with severe disabilities: near-infrared spectroscopy, electroencephalographic measurement of visually-evoked potentials and infrared thermographic imaging of the face. The first two technologies harness activity directly from the brain while the third exploits spontaneous temperature changes in the face. For each technology, we discuss the physiological underpinnings, the requisite instrumentation, the scientific evidence to date and the future outlook.
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