Temporal processing and context dependency of phoneme discrimination in patients with aphasia.
Standard diagnostic procedures for assessing temporal-processing abilities of adult patients with aphasia have so far not been developed. In our study, temporal-order measurements were conducted using two different experimental procedures to identify a suitable measure for clinical studies. Additionally, phoneme-discrimination abilities were tested on the word, as well as on the sentence level, as a relationship between temporal processing and phoneme-discrimination abilities is assumed. Patients with aphasia displayed significantly higher temporal-order thresholds than control subjects. The detection of an association between temporal processing and speech processing, however, depended on the stimuli and the phoneme-discrimination tasks used. Our results also suggest top-down feedback on phonemic processing.
Fink
Martina
M
Generation Research Program Bad Tölz, Human Science Center, Ludwig-Maximilian University of Munich, Germany. fink@grp.hwz.uni-muenchen.de
Churan
Jan
J
Wittmann
Marc
M
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001037:Aphasia / Q000503:physiopathology*; D001307:Auditory Perception / Q000502:physiology*; D016022:Case-Control Studies; D032882:Comprehension / Q000502:physiology; D004192:Discrimination, Psychological / Q000502:physiology; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D013997:Time Factors