Functional changes in temporal lobe activity during transient global amnesia

Neurology. 2002 Feb 26;58(4):638-41. doi: 10.1212/wnl.58.4.638.

Abstract

The integrity of temporal lobe activity during and after recovery from transient global amnesia (TGA) was assessed in a case study using functional MRI. TGA was associated with scene-encoding deficits in a temporolimbic circuit that recovered over time. Frontoparietal areas recruited during the amnesic state may signify a compensatory reliance on visuospatial or working memory strategies. Reduction of extrastriate cortex responses over repeated testing sessions possibly indicates intact visual priming in TGA.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Amnesia, Transient Global / diagnosis*
  • Amnesia, Transient Global / physiopathology
  • Brain / physiology
  • Brain / physiopathology
  • Epilepsy, Temporal Lobe / diagnosis*
  • Epilepsy, Temporal Lobe / physiopathology
  • Humans
  • Magnetic Resonance Imaging / methods
  • Male
  • Recovery of Function / physiology