Title :
On the building of binary spelling interfaces for augmentative communication
Author :
Tregoubov, Mikhail ; Birbaumer, Niels
Author_Institution :
Accenture GmbH, Kronberg, Germany
Abstract :
A criterion for design of optimal binary spelling interfaces (SI)-the average expectation of number of writing steps (trials) required to write one letter-is presented and discussed. This criterion is relevant for practical usage of any menu-oriented alternative communication system, mechanical device or brain-computer-interface, when a user (typically, a patient with devastating neuromuscular handicap) can not create an intended single binary response with an absolute reliability. An algorithm for building of a corresponding binary tree is developed and evaluated. This algorithm is efficient, when selection probabilities have essentially different values (the worst case).
Keywords :
biomedical communication; brain; handicapped aids; neurophysiology; spelling aids; augmentative communication; binary tree; brain-computer-interface; mechanical device; menu-oriented alternative communication system; neuromuscular handicap; optimal binary spelling interfaces; Binary trees; Brain computer interfaces; Buildings; Communication system control; Control systems; Fingers; Frequency; Neuromuscular; Psychology; Writing; Binary spelling interface; brain-computer-interface; Algorithms; Communication Aids for Disabled; Humans; Information Storage and Retrieval; Natural Language Processing; Pattern Recognition, Automated; Signal Processing, Computer-Assisted; User-Computer Interface; Vocabulary, Controlled; Word Processing;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.2004.836505
