Detecting Silent Vocalizations in a Locked-In Subject
Upper panel illustrates the number of lower beta band peaks found in the trials for different vowel phonemes and during silent trials during internal vocalization of phonemes. The middle panel illustrates the average PSD% and frequencies at which the beta peaks occurred. The third panel illustrates the number of trials with lower beta band peak frequencies during the “listen” periods. Data from 2007-10-09 file no. 07.