Assistive technology is an umbrella term that includes assistive, adaptive, and rehabilitative devices for people with disabilities and also includes the process used in selecting, locating, and using them. Assistive technology promotes greater independence by enabling people to perform tasks that they were formerly unable to accomplish, or had great difficulty accomplishing, by providing enhancements to, or changing methods of interacting with, the technology needed to accomplish such tasks.
- 1 Assistive technology and adaptive technology
- 2 Mobility impairments
- 3 Visual Impairments
- 4 Personal emergency response systems
- 5 Accessibility software
- 6 Assistive technology for hearing impairment
- 7 Augmentative and alternative communication
- 8 Assistive technology for cognition
- 9 Assistive technology in sport
- 10 Assistive technology in education
- 11 Computer accessibility
- 12 Home automation
- 13 See also
Assistive technology and adaptive technology
The term adaptive technology is often used as the synonym for assistive technology, however, they are different terms. Assistive technology refers to "any item, piece of equipment, or product system, whether acquired commercially, modified, or customized, that is used to increase, maintain, or improve functional capabilities of individuals with disabilities", while adaptive technology covers items that are specifically designed for persons with disabilities and would seldom be used by non-disabled persons. In other words, "assistive technology is any object or system that increases or maintains the capabilities of people with disabilities," while adaptive technology is "any object or system that is specifically designed for the purpose of increasing or maintaining the capabilities of people with disabilities." Consequently, adaptive technology is a subset of assistive technology. Adaptive technology often refers specifically to electronic and information technology access.
Wheelchairs are devices that can be manually propelled or electrically propelled and that include a seating system and are designed to be a substitute for the normal mobility that most people enjoy. Wheelchairs and other mobility devices allow people to perform mobility related activities of daily living which include feeding, toileting, dressing grooming and bathing. The devices comes in a number of variations where they can be propelled either by hand or by motors where the occupant uses electrical controls to manage motors and seating control actuators through a joystick, sip-and-puff control, or other input devices. Often there are handles behind the seat for someone else to do the pushing or input devices for caregivers. Wheelchairs are used by people for whom walking is difficult or impossible due to illness, injury, or disability. People with both sitting and walking disability often need to use a wheelchair or walker.
Patient transfer devices generally allow patients with impaired mobility to be moved by caregivers between beds, wheelchairs, commodes, toilets, chairs, stretchers, shower benches, automobiles, swimming pools, and other patient support systems (i.e., radiology, surgical, or examining tables). The most common devices are Patient lifts (for vertical transfer), Transfer benches, stretcher or convertible chairs (for lateral, supine transfer), sit-to-stand lifts (for moving patients from one seated position to another i.e., from wheelchairs to commodes), air bearing inflatable mattresses (for supine transfer i.e., transfer from a gurney to an operating room table), and sliding boards (usually used for transfer from a bed to a wheelchair). Highly dependent patients who cannot assist their caregiver in moving them often require a Patient lift (a floor or ceiling-suspended sling lift) which though invented in 1955 and in common use since the early 1960's is still considered the state-of-the-art transfer device by OSHA and the American Nursing Association.
A walker or walking frame or Rollator is a tool for disabled people who need additional support to maintain balance or stability while walking. It consists of a frame that is about waist high, approximately twelve inches deep and slightly wider than the user. Walkers are also available in other sizes, such as for children, or for heavy people. Modern walkers are height-adjustable. The front two legs of the walker may or may not have wheels attached depending on the strength and abilities of the person using it. It is also common to see caster wheels or glides on the back legs of a walker with wheels on the front.
A prosthesis, prosthetic, or prosthetic limb is a device that replaces a missing body part. It is part of the field of biomechatronics, the science of using mechanical devices with human muscle, skeleton, and nervous systems to assist or enhance motor control lost by trauma, disease, or defect. Prostheses are typically used to replace parts lost by injury (traumatic) or missing from birth (congenital) or to supplement defective body parts. Inside the body, artificial heart valves are in common use with artificial hearts and lungs seeing less common use but under active technology development. Other medical devices and aids that can be considered prosthetics include hearing aids, artificial eyes, palatal obturator, gastric bands, and dentures.
Prostheses are specifically not orthoses, although given certain circumstances a prosthesis might end up performing some or all of the same functionary benefits as an orthosis. Prostheses are technically the complete finished item. For instance, a C-Leg knee alone is not a prosthesis, but only a prosthetic component. The complete prosthesis would consist of the attachment system to the residual limb — usually a "socket", and all the attachment hardware components all the way down to and including the terminal device. Keep this in mind as nomenclature is often interchanged.
The terms "prosthetic" and "orthotic" are adjectives used to describe devices such as a prosthetic knee. The terms "prosthetics" and "orthotics" are used to describe the respective allied health fields. The devices themselves are properly referred to as "prostheses" and "orthoses" in the plural and "prosthesis" and "orthosis" in the singular.
Many people with serious visual impairments live independently, using a wide range of tools and techniques. Examples of assistive technology for visually impairment include screen readers, screen magnifiers, Braille embossers, desktop video magnifiers, and voice recorders.
Screen readers allow the visually impaired to easily access electronic information. These software programs connect to a computer to read the text displayed out loud. There is a variety of platforms and applications available for a variety of costs.
Braille and Braille Embossers
Braille is a system of raised dots formed into units called braille cells. A full braille cell is made up of six dots, with two parallel rows of three dots, but other combinations and quantities of dots represent other letters, numbers, punctuation marks, or words. People can then use their fingers to read the code of raised dots.
A braille embosser is, simply put, a printer for braille. Instead of a standard printer adding ink onto a page, the braille embosser imprints the raised dots of braille onto a page. Some braille embossers combine both braille and ink so the documents can be read with either sight or touch.
Desktop Video Magnifier
Screen Magnification Software
Personal emergency response systems
Personal emergency response systems (PERS), or Telecare (UK term), are a particular sort of assistive technology that use electronic sensors connected to an alarm system to help caregivers manage risk and help vulnerable people stay independent at home longer. An example would be the systems being put in place for senior people such as fall detectors, thermometers (for hypothermia risk), flooding and unlit gas sensors (for people with mild dementia). Notably, these alerts can be customized to the particular person's risks. When the alert is triggered, a message is sent to a caregiver or contact center who can respond appropriately.
In human–computer interaction, computer accessibility (also known as accessible computing) refers to the accessibility of a computer system to all people, regardless of disability or severity of impairment, examples include web accessibility guidelines. Another approach is for the user to present a token to the computer terminal, such as a smart card, that has configuration information to adjust the computer speed, text size, etc. to their particular needs. This is useful where users want to access public computer based terminals in Libraries, ATM, Information kiosks etc. The concept is encompassed by the CEN EN 1332-4 Identification Card Systems - Man-Machine Interface. This development of this standard has been supported in Europe by SNAPI and has been successfully incorporated into the Lasseo specifications, but with limited success due to the lack of interest from public computer terminal suppliers.
Assistive technology for hearing impairment
The deaf or hard of hearing community has a difficult time to communicate and perceive information as compared to hearing individuals. Thus, these individuals often rely on visual and tactile mediums for receiving and communicating information. The use of assistive technology and devices provides this community with various solutions to their problems by providing higher sound (for those who are hard of hearing), tactile feedback, visual cues and improved technology access. Individuals who are deaf or hard of hearing utilize a variety of assistive technologies that provide them with improved accessibility to information in numerous environments. Most devices either provide amplified sound or alternate ways to access information through vision and/or vibration. These technologies can be grouped into three general categories: Hearing Technology, alerting devices, and communication support.
Augmentative and alternative communication
Augmentative and alternative communication (AAC) is an umbrella term that encompasses methods of communication for those with impairments or restrictions on the production or comprehension of spoken or written language. AAC systems are extremely diverse and depend on the capabilities of the user. They may be as basic as pictures on a board that the are used to request food, drink, or other care; or they can be advanced speech generating devices, based on speech synthesis, that are capable of storing hundreds of phrases and words.
Assistive technology for cognition
Assistive technology for cognition (ATC) is the use of technology (usually high tech) to augment and assistive cognitive processes such as attention, memory, self-regulation, navigation, emotion recognition and management, planning, and sequencing activity. Systematic reviews of the field have found that the number of ATC are growing rapidly, but have focused on memory and planning, that there is emerging evidence for efficacy, that a lot of scope exists to develop new ATC. Examples of ATC include: NeuroPage which prompts users about meetings, Wakamaru, which provides companionship and reminds users to take medicine and calls for help if something is wrong, and telephone Reassurance systems.
Assistive technology in sport
Assistive technology in sport is an area of technology design that is growing. Assistive technology is the array of new devices created to enable sports enthusiasts who have disabilities to play. Assistive technology may be used in adaptive sports, where an existing sport is modified to enable players with a disability to participate; or, assistive technology may be used to invent completely new sports with athletes with disabilities exclusively in mind.
An increasing number of people with disabilities are participating in sports, leading to the development of new assistive technology. Assistive technology devices can be simple, or "low-tech", or they may use highly advanced technology, with some even using computers. Assistive technology for sports may also be simple, or advanced. Accordingly, assistive technology can be found in sports ranging from local community recreation to the elite Paralympic Games. More complex assistive technology devices have been developed over time, and as a result, sports for people with disabilities "have changed from being a clinical therapeutic tool to an increasingly competition-oriented activity".
Assistive technology in education
In the United States there are two major pieces of legislation that govern the use of assistive technology within the school system. The first is Section 504 of the Rehabilitation Act of 1973 and the second being the Individuals with Disabilities Education Act (IDEA) which was first enacted in 1975 under the name The Education for All Handicapped Children Act. In 2004, during the reauthorization period for IDEA, the National Instructional Material Access Center (NIMAC) was created which provided a repository of accessible text including publisher's textbooks to students with a qualifying disability. Files provided are in XML format and used as a starting platform for braille readers, screen readers, and other digital text software. IDEA defines assistive technology as follows: "any item, piece of equipment, or product system, whether acquired commercially off the shelf, modified, or customized, that is used to increase, maintain, or improve functional capabilities of a child with a disability. (B) Exception.--The term does not include a medical device that is surgically implanted, or the replacement of such device." 
Assistive technology in this area is broken down into low, mid, and high tech categories. Low tech encompasses equipment that is often low cost and does not include batteries or requires charging. Examples include adapted paper and pencil grips for writing or masks and color overlays for reading. Mid tech supports used in the school setting include the use of handheld spelling dictionaries and portable word processors used to keyboard writing. High tech supports involve the use of tablet devices and computers with accompanying software. Software supports for writing include the use of auditory feedback while keyboarding, word prediction for spelling, and speech to text. Supports for reading include the use of text to speech (TTS) software and font modification via access to digital text. Limited supports are available for math instruction and mostly consist of grid based software to allow younger students to keyboard equations and auditory feedback of more complex equations using MathML and Daisy.
One of the largest problems that affect people with disabilities is discomfort with prostheses. An experiment performed in Massachusetts utilized 20 people with various sensors attached to their arms. The subjects tried different arm exercises, and the sensors recorded their movements. All of the data helped engineers develop new engineering concepts for prosthetics.
Assistive technology may attempt to improve the ergonomics of the devices themselves such as Dvorak and other alternative keyboard layouts, which offer more ergonomic layouts of the keys. Assistive technology devices have been created to enable people with disabilities to use modern touch screen mobile computers such as the iPad, iPhone and iPod touch. The Pererro is a plug and play adapter for iOS devices which uses the built in Apple VoiceOver feature in combination with a basic switch. This brings touch screen technology to those who were previously unable to use it. Apple, with the release of iOS 7 had introduced the ability to navigate apps using switch control. Switch access could be activated either through an external bluetooth connected switch, single touch of the screen, or use of right and left head turns using the device's camera. Additional accessibility features include the use of Assistive Touch which allows a user to access multi-touch gestures through pre-programmed onscreen buttons.
For users with physical disabilities a large variety of switches are available and customizable to the user's needs varying in size, shape, or amount of pressure required for activation. Switch access may be placed near any area of the body which has consistent and reliable mobility and less subject to fatigue. Common sites include the hands, head, and feet. Eye gaze and head mouse systems can also be used as an alternative mouse navigation. A user may utilize single or multiple switch sites and the process often involves a scanning through items on a screen and activating the switch once the desired object is highlighted.
The form of home automation called assistive domotics focuses on making it possible for elderly and disabled people to live independently. Home automation is becoming a viable option for the elderly and disabled who would prefer to stay in their own homes rather than move to a healthcare facility. This field uses much of the same technology and equipment as home automation for security, entertainment, and energy conservation but tailors it towards elderly and disabled users.
|Wikimedia Commons has media related to Assistive technology.|
- Augmentative and alternative communication
- Braille technology
- Design for All (in ICT)
- Durable medical equipment
- Matching Person & Technology Model
- OATS: Open Source Assistive Technology Software
- Occupational Therapy
- Transgenerational design
- Universal access to education
- "Tennessee Science Standards" (PDF). Retrieved 2012-10-05.
- "Assessing for Adaptive Technology Needs". Retrieved 2012-10-05.
- C. Barrué. Personalization and Shared Autonomy in Assistive Technologies. Ph. Thesis. Universitat Politècnica de Catalunya. 2012
- Web accessibility guidelines
- CEN EN 1332-4 Identification Card Systems - Man-Machine Interface
- "Assistive Technology for Individuals who are Deaf or Hard of Hearing" (PDF). Retrieved 2015-11-08.
- ASHA (2005).
- Gilliam & Marquardt, pp. 356–359.
- LoPresti, E.F., Mihailidis, A. & Kirsch, N. (2004). Assistive Technology for cognitive rehabilitation: State of the art. Neuropsychological Rehabilitation, 14, 5-39.
- Gillespie, A., Best, C. & O'Neill, B. (2012). Cognitive function and Assistive Technology for cognition: A systematic review. Journal of the International Neuropsychological Society, 18, 1-19.
- Wilson, et al. (1997). Evaluation of NeuroPage: A new memory aid. Journal of Neurology, Neurosurgery and Psychiatry, 63, 113-115.
- assistivetech.net: Telephone Reassurance. Accessed 2009-08-06.
- Scherer, Marcia and Stefano Federici (2012). Assistive Technology Assessment Handbook. CRC Press. p. 425. ISBN 9781439838655.
- "Assistive technologies". Spaulding Framingham. Retrieved September 5, 2012.
- Scherer, Marcia and Stefano Federici (2012). Assistive Technology Assessment Handbook. CRC Press. p. 427. ISBN 9781439838655.
- http://www.nimac.us/. Missing or empty
- http://idea.ed.gov/explore/view/p/,root,statute,I,A,602,1,. Missing or empty
- Abdullah, Hussein A.; Tarry, Cole; Datta, Rahul.; Mittal, Gauri S.; Abderrahim, Mohamed (2007). "Dynamic Biomechanical Model for Assessing and Monitoring Robot-Assisted Upper-Limb Therapy". Journal of Rehabilitation Research and Development 44 (1): 43–62. doi:10.1682/JRRD.2006.03.0025. PMID 17551857.
- Chubon, R.A., Hester, M.R. (1988). "An enhanced standard computer keyboard system for single-finger and typing-stick typing". Journal of Rehabilitation Research and Development 25 (4): 17–24. PMID 2973523.
- Anson, D., George, S., Galup, R., Shea, B., Vetter, R. (2001). "Efficiency of the Chubon versus the QWERTY keyboard". Assistive-Technology 13 (1): 40–5. doi:10.1080/10400435.2001.10132032. PMID 12212435.
- American Speech-Language-Hearing Association. (2005). "Roles and Responsibilities of Speech-Language Pathologists With Respect to Augmentative and Alternative Communication: Position Statement". Archived from the original on 13 February 2009. Retrieved 2009-01-23.
- DeCoste, Denise C. (1997). "Chapter 10: Introduction to Augmentative and Alternative Communication Systems". In Glennen, Sharon; DeCoste, Denise C. Handbook Of Augmentative And Alternative Communication. San Diego, CA: Singular Publishing Group. ISBN 1-56593-684-1.
- Schlosser, R. W.; Wendt, O. (2008). "Effects of augmentative and alternative communication intervention on speech production in children with autism: a systematic review". American Journal of Speech-Language Pathology 17 (3): 212–230. doi:10.1044/1058-0360(2008/021). PMID 18663107.
- Beukelman, David R.; Mirenda, Pat (2005). Augmentative & alternative communication: supporting children & adults with complex communication needs (3rd ed.). Paul H. Brookes Publishing Company. ISBN 978-1-55766-684-0.
- Galvão Filho, T. (2009). "Tecnologia Assistiva para uma Escola Inclusiva: apropriação, demandas e perspectivas. Tese (Doutorado em Educação) – Faculdade de Educação, Universidade Federal da Bahia, Salvador, Brazil. Disponível em: http://www.galvaofilho.net/tese.htm".
- Mirenda, P. (2003). "Toward Functional Augmentative and Alternative Communication for Students With Autism: Manual Signs, Graphic Symbols, and Voice Output Communication Aids". Language, Speech, & Hearing Services in Schools 34 (3): 203–216. doi:10.1044/0161-1461(2003/017).
- Mathy; Yorkston, K.; Guttman (2000). "Augmentative Communication for Individuals with Amyotrophic Lateral Sclerosis". In Beukelman, D.; Yorkston, K.; Reichle, J. Augmentative and Alternative Communication Disorders for Adults with Acquired Neurologic Disorders. Baltimore: P. H. Brookes Pub. ISBN 978-1-55766-473-0.
- Jans, Deborah; Clark, Sue (1998). "Chapter 6: High Technology Aids to Communication". In Wilson, Allan. Augmentative Communication in Practice: An Introduction. University of Edinburgh. ISBN 978-1-898042-15-0.
- Parette, H. P.; Brotherson, M. J; Huer, M. B. (2000). "Giving families a voice in augmentative and alternative communication decision-making". Education and Training in Mental Retardation and Developmental Disabilities 35: 177–190.