There is a difference between the AAC systems that people with degenerative diseases need compared to others using AAC. For example, if a child has cerebral palsy, then long and extensive motor training and practice may be necessary for ACC’s effective and full use. (Beukelman & Light, 2020). Patients diagnosed with verbal dyspraxia often need an ACC, which includes communication boards and speech-generating devices. If the patient has amyotrophic lateral sclerosis, it is possible to use a device that tracks the gaze or a handwriting device that is more high-tech. Thus, AAC systems for people with degenerative diseases are more complicated in terms of preparation and use. AAC systems used by patients suffering from degenerative diseases require a more individual and technologically thought-out approach. People with degenerative diseases are much more likely to need high-tech AAC than other patients using this type of communication.
AAC systems for children should be aimed, first of all, to interest the child in further communication and interaction. These systems should be not only practical and functional but also have bright, colored content so that the child returns to them with pleasure. The organization of the dictionary aims to select images, words, phrases, and sentences for effective communication (Beukelman & Light, 2020). The tabular format is common for communication books and devices; the terms indicated in their margins are arranged according to the order of words in the sentence, depending on the frequency of use or category. Symbols are used in all forms of AAC, and they can be graphic, auditory, gestural, and verbal.
Among the well-known symbol systems, the Bliss system can be distinguished, which has some linguistic features. The Bliss system has grammatical categories and a picture-based communication system that is not subject to grammar rules. The development of technology has significantly increased the choice of methods and means of communication for people with communication difficulties. The user can also use natural selection, during which the user points to the desired symbol with a finger, a glance, or a joystick (Beukelman & Light, 2020). Some users choose additional techniques; for example, when selecting a symbol for a certain period, the image on the display changes.
Reference
Beukelman, D. R. & Light, J. C. (2020). Augmentative and alternative communication: Supporting children and adults with complex communication needs (5th ed.). Paul H. Brookes Publishing.