Title :
Threshold Adaptation for Mean Value Based Operant Conditioning
Author :
Ivanova, Galina ; Pérez, Daniel ; Both, Reinhard
Author_Institution :
Inst. of Biomed. Eng. & Informatics, Technische Univ. Ilmenau
Abstract :
Biofeedback and a variety of brain-computer-interface methods imply as very first stages the obtainment of control of selected signals e.g. the related generating psychophysiological processes. The basic mechanism in the learning phase is the operant conditioning, which represent a complex behavioral method consisting of several components. One of the most important components is the setting and adjustment of thresholds for the triggering of corresponding rewarding options. An adaptive threshold optimization method, for the training based on average values is presented. The procedure is derivated from the sequential test from Wald. The application of the sequential tests in the learning/training process allows a threshold adaptation corresponding to the abilities of the particular person and to the learning success
Keywords :
bioelectric phenomena; brain; learning (artificial intelligence); medical control systems; neurophysiology; user interfaces; adaptive threshold optimization; biofeedback; brain-computer-interface methods; complex behavioral method; electrophysiological signals; learning phase; learning process; mean value based operant conditioning; psychophysiological processes; sequential test; threshold adaptation; training process; Biomedical engineering; Biomedical informatics; Brain computer interfaces; Error analysis; Optimization methods; Psychology; Recursive estimation; Sequential analysis; Signal generators; Signal processing; brain-computer-interface; learning; operant conditioning; sequential methods;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1617263