Multilevel fMRI adaptation for spoken word processing in the awake dog brain

摘要: Human brains process lexical meaning separately from emotional prosody of speech at higher levels the processing hierarchy. Recently we demonstrated that dog can also dissociate and prosodic information in human spoken words. To better understand neural dynamics brain, here used an event-related design, optimized for fMRI adaptation analyses on multiple time scales. We investigated repetition effects dogs' (BOLD) responses to lexically marked (praise) words unmarked (neutral) words, praising neutral prosody. identified temporally anatomically distinct patterns. In a subcortical auditory region, found both short- long-term prosody, but not markedness. cortical regions, compared This showed right-hemisphere bias was age-modulated near-primary region independent secondary region. Word representations cortex thus contain more than just they are typically associated with. These findings demonstrate multilevel brain consistent with hierarchical account word processing.