AT for person with vision impairments AT for persons with limited hearing Communication Mobility Motor vehicle

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Nov 17, 2013 (3 years and 4 months ago)

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Cathy Chambless, Utah State
University

AT for person with vision impairments

AT for persons with limited hearing

Communication

Mobility

Motor vehicle

Cathy Chambless, Utah State
University

Assistive Technology


The use of technology to assist people
who have disabilities


1. Device: piece of equipment, item or
product system


2. Service: any service that helps person
choose, acquire or use an AT device


Low tech (mechanical) or


High tech (electromechanical)

Cathy Chambless, Utah State
University

Role of Rehab Counselor in AT


Assist person in determining the objectives
to be achieved by using the technology


Determine the fit between the technology
and the person’s preferences, values


Assess the resources to learn how to use
and to maintain device or equipment.


Cathy Chambless, Utah State
University

Human

technology interface


Voice recognition technology (VRT)


Enables control of device with voice


Optical character recognition (OCT)


Uses camera and scanner device


Recognizes printed data, converts into digital form
and vocalizes through speech synthesizer


Pointing and selection devices


Physical control with mouse, mouth stick, head
pointer, eye gaze, etc.

Cathy Chambless, Utah State
University

Technologies for persons with
vision impairments


Visual data access


Optical aids


magnifiers, field expanders with
prisms


Non
-
optical


enlarged print, high intensity
lamps, opaque projectors


Screen readers


software translates text to
speech


Requires accessible data formats

Cathy Chambless, Utah State
University

Technologies for persons with
vision impairments
-
2


Auditory data access


Talking books, audiocassettes, CD’s, digital
recording


Tactile sensory communication


uses Braille alphabet


Travel aids


Laser cane, uses light beam on tip of cane,
info transmitted to handle where pins vibrate


Cathy Chambless, Utah State
University

Technologies for persons who are
deaf or have limited hearing


TTD (Telecommunication Device for the
Deaf)


transmits electronic text over
phone


Telephone Relay Service


One person
communicates via TTD to a relay operator
who then communicates by phone with
hearing person, and vice versa


Cochlear implants


transmits electrical
impulses thru cochlear nerve

Cathy Chambless, Utah State
University

Technologies for persons who are
deaf or have limited hearing
-
2


Hearing aids


Monaural, binaural


pseudo binaural (most common) consists of
one microphone and one amplifier routed to 2
aids placed in each ear


Assistive listening device (ALD)


Infrared system within a closed environment,
e.g., classroom, conference room, etc.


Person wears hearing aid or audio loop

Cathy Chambless, Utah State
University

Augmentative and Alternative
Communication (AAC) Technology


For people with speaking or writing
communication limitations


Person must recognize words or symbols,
understand commands, categorize,
sequence, sort, and match. Uses codes
and symbols


Manual


sign language, finger spelling


Device


from speech board to computer

Cathy Chambless, Utah State
University

Mobility technologies


Low tech: canes, crutches, walkers,
manual wheelchairs


High tech: motorized wheelchairs
containing battery powered bases


Various input devices: regular joystick; 4
stick position, puff and sip controls; chin,
head or foot joystick

Cathy Chambless, Utah State
University

Motor vehicle technologies


Driver Assessment Program


Assesses decision making skills


Driving controls


Steering, acceleration, braking


Lower extremity access


Pedal extenders, hand control systems has
mechanical link that transfers control from foot
pedals to hands