title: [Effect of chewing-side preference on activation of parahippocampal gyrus during clenching task].
abstract: OBJECTIVE
  To explore effects of chewing-side preference (CSP) on cerebral cortical response during clenching task with functional magnetic resonance imaging (fMRI).
  
  
  METHODS
  Seven patients with left CSP and 7 patients with right CSP were selected to perform the maximum voluntary clenching in intercuspal position, and block designed blood oxygenation level-dependent (BOLD) fMRI scan covering the whole brain was carried out.
  
  
  RESULTS
  There was activation in the parahippocampal gyrus in the four patients among seven with left CSP. But there was no activation in the parahippocampal gyrus among the patients with right CSP.
  
  
  CONCLUSIONS
  This research shows that the parahippocampal gyrus, which is associated with human memory and study, is activated during clenching task in the patients with left CSP.
authors.affiliation: Department of Stomatology, General Hospital of PLA, Beijing 100853, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Jiang
authors.forename: Hong-chen
authors.initials: HC
authors.lastname: Liu
authors.forename: Zhen
authors.initials: Z
authors.lastname: Jin
authors.forename: Gang
authors.initials: G
authors.lastname: Liu
authors.forename: Ke
authors.initials: K
authors.lastname: Li
authors.forename: Ya-wei
authors.initials: YW
authors.lastname: Zeng
mesh_terms: D000328:Adult; D001732:Bite Force; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008409:Mastication / Q000502:physiology*; D008568:Memory / Q000502:physiology; D020534:Parahippocampal Gyrus / Q000502:physiology*; D055815:Young Adult