Keelespetsiifiliste stiimulite töötlus erinevatel keelegruppidel: EEG uuring

Two almost identical EEG experiments were conducted with about one month between them to examine how the brain processes language specific stimuli among Estonian (n =15, aged 19-27 years) and Russian (n = 15, aged 18-27 years) native speakers. The used stimuli were based on Estonian quantity changes, which are not structurally common for Russian speakers. Two different linguistic stimulus sets (SADA, SAGI) and one physically similar tone stimulus set were used, stimuli differed from each other by duration and tonal change. During the EEG recording, participants had to watch a silent movie while auditory language stimuli were presented in an MMN experimental paradigm to their headphones. An additional speech intelligibility test was conducted on both times and self-reported questionnaire had to be filled before the testing. The tone stimulus elicited a more persistent MMN wave with larger amplitude in both language group, linguistic stimuli elicited a more pronounced MMN response among Estonian native speakers. The study provided a slight support to previous findings, as the Estonians used both durational and pitch cue to discriminate quantities. Only few used conditions elicited MMN among Russian native speakers with no complete clarity if the activity was caused by durational or pitch cue (or both). No consistent lateralization effect was found nor relationships with possible background factors (language abilities, musicality, language experience and time spent in Estonian language environment for Russian native speakers)

Aerospace medicine and biology: A continuing bibliography with indexes, supplement 184

This bibliography lists 139 reports, articles, and other documents introduced into the NASA scientific and technical information system in August 1978

Vocal fold vibratory and acoustic features in fatigued Karaoke singers

Session 3aMU - Musical Acoustics and Speech Communication: Singing Voice in Asian CulturesKaraoke is a popular singing entertainment particularly in Asia and is gaining more popularity in the rest of world. In Karaoke, an amateur singer sings with the background music and video (usually guided by the lyric captions on the video screen) played by Karaoke machine, using a microphone and an amplification system. As the Karaoke singers usually have no formal training, they may be more vulnerable to vocal fatigue as they may overuse and/or misuse their voices in the intensive and extensive singing activities. It is unclear whether vocal fatigue is accompanied by any vibration pattern or physiological changes of vocal folds. In this study, 20 participants aged from 18 to 23 years with normal voice were recruited to participate in an prolonged singing task, which induced vocal fatigue. High speed laryngscopic imaging and acoustic signals were recorded before and after the singing task. Images of /i/ phonation were quantitatively analyzed using the High Speed Video Processing (HSVP) program (Yiu, et al. 2010). It was found that the glottis became relatively narrower following fatigue, while the acoustic signals were not sensitive to measure change following fatigue. © 2012 Acoustical Society of Americapublished_or_final_versio

Aerospace medicine and biology: A continuing bibliography with indexes (supplement 326)

This bibliography lists 108 reports, articles and other documents introduced into the NASA Scientific and Technical Information System during July, 1989. Subject coverage includes: aerospace medicine and psychology, life support systems and controlled environments, safety equipment, exobiology and extraterrestrial life, and flight crew behavior and performance