title: Action and object processing in brain-injured speakers of Chinese.
abstract: OBJECTIVE
  To see whether action and object processing across different tasks and modalities differs in brain-injured speakers of Chinese with varying fluency and lesion locations within the left hemisphere.
  
  
  METHODS
  Words and pictures representing actions and objects were presented to a group of 33 participants whose native and/or dominant language was Mandarin Chinese: 23 patients with left-hemisphere lesions due to stroke and 10 language-, age- and education-matched healthy control participants. A set of 120 stimulus items was presented to each participant in three different forms: as black and white line drawings (for picture-naming), as written words (for reading) and as aurally presented words (for word repetition). Patients were divided into groups for two separate analyses: Analysis 1 divided and compared patients based on fluency (Fluent vs. Nonfluent) and Analysis 2 compared patients based on lesion location (Anterior vs. Posterior).
  
  
  RESULTS
  Both analyses yielded similar results: Fluent, Nonfluent, Anterior, and Posterior patients all produced significantly more errors when processing action (M = 0.73, SD = 0.45) relative to object (M = 0.79, SD = 0.41) stimuli, and this effect was strongest in the picture-naming task.
  
  
  CONCLUSIONS
  As in our previous study with English-speaking participants using the same experimental design (Arévalo et al., 2007, Arévalo, Moineau, Saygin, Ludy, & Bates, 2005), we did not find evidence for a double-dissociation in action and object processing between groups with different lesion and fluency profiles. These combined data bring us closer to a more informed view of action/object processing in the brain in both healthy and brain-injured individuals.
authors: Center for Aphasia and Related Disorders, VA Northern California Health Care System, Martinez, CA 94553, USA. analia@ebire.org
authors: Analia L
authors: AL
authors: Arévalo
authors: Ching-Ching
authors: CC
authors: Lu
authors: Lydia B-Y
authors: LB
authors: Huang
authors: Elizabeth A
authors: EA
authors: Bates
authors: Nina F
authors: NF
authors: Dronkers
mesh_terms: D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D001037:Aphasia / Q000175:diagnosis / Q000209:etiology*; D001930:Brain Injuries / Q000150:complications* / Q000473:pathology; D016022:Case-Control Studies; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009069:Movement Disorders / Q000175:diagnosis / Q000209:etiology; D009275:Names; D010775:Photic Stimulation; D011932:Reading; D012660:Semantics; D014796:Visual Perception; D014825:Vocabulary