title: [Influence of visual and auditory masking on the brain glucose metabolism in an idiopathic tinnitus patient].
abstract: OBJECTIVE
  To study the influence of the audio-visual block (AB) on the brain glucose metabolism of idiopathic tinnitus patients.
  
  
  METHODS
  The brain positron emission tomography (PET) test was performed on one chronic idiopathic tinnitus patient under audio-visual block and non-block (NB) conditions respectively. The visual analysis and statistical parameter mapping (SPM) analysis were both used to detect the brain glucose metabolism difference under AB and NB conditions.
  
  
  RESULTS
  Under NB conditions, significant hyperactivity was detected at auditory and visual cortex on both sides of the brain. However, this phenomenon was not shown under AB conditions. Instead, a hyperactivity of brain was presented in the left Wernicke's area.
  
  
  CONCLUSIONS
  The generation of chronic idiopathic tinnitus probably has no relationship with the auditory cortex abnormity. Wernicke's area might be involved in the central perception of tinnitus.
authors.affiliation: Department of Otorhinolaryngology, Shanghai University of Traditional Chinese Medicine, Shanghai, China. liming0168@sina.com.
authors.forename: Ming
authors.initials: M
authors.lastname: Li
authors.forename: Zhe-min
authors.initials: ZM
authors.lastname: Huang
authors.forename: Chuan-tao
authors.initials: CT
authors.lastname: Zuo
authors.forename: Jian-ning
authors.initials: JN
authors.lastname: Zhang
mesh_terms: D000328:Adult; D001303:Auditory Cortex / Q000378:metabolism; D001921:Brain / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism*; D006801:Humans; D008297:Male; D049268:Positron-Emission Tomography; D014012:Tinnitus / Q000000981:diagnostic imaging / Q000378:metabolism*
chemical_list: D005947:Glucose