Cortical processing of tactile language in a postlingually deaf-blind subject

Neuroreport. 2004 Feb 9;15(2):287-91. doi: 10.1097/00001756-200402090-00015.

Abstract

We compared neural activation detected by magnetoencephalography (MEG) during tactile presentation of words and non-words in a postlingually deaf-blind subject and six normal volunteers. The left postcentral gyrus, bilateral inferior frontal gyri, left posterior temporal lobe, right anterior temporal lobe, bilateral middle occipital gyri were activated when tactile words were presented to the right hand of the deaf-blind subject. This set of activated regions was not observed in the normal volunteers, although activation of several combinations of these regions was detected. Positron emission tomography confirmed the location of the MEG-activated areas in the deaf-blind subject. Our results demonstrated that the deaf-blind subject is heavily involved in interpreting tactile language by enhancing cortical activation of cognitive and semantic processing.

Publication types

  • Case Reports
  • Comparative Study

MeSH terms

  • Adult
  • Blindness / diagnostic imaging
  • Blindness / physiopathology*
  • Brain Mapping
  • Cerebral Cortex / anatomy & histology
  • Cerebral Cortex / diagnostic imaging
  • Cerebral Cortex / physiopathology*
  • Cognition / physiology
  • Deafness / diagnostic imaging
  • Deafness / physiopathology*
  • Functional Laterality / physiology
  • Humans
  • Imagination / physiology
  • Language
  • Language Tests
  • Magnetoencephalography
  • Male
  • Manual Communication*
  • Neuronal Plasticity / physiology
  • Reference Values
  • Semantics
  • Tomography, Emission-Computed
  • Touch / physiology*
  • Verbal Behavior / physiology*