fMRI reveals cognitive and emotional processing in a long-term comatose patient

Exp Neurol. 2008 Dec;214(2):240-6. doi: 10.1016/j.expneurol.2008.08.007. Epub 2008 Aug 27.

Abstract

We report on a 41-year old woman with prolonged comatose unresponsiveness following traumatic head injury. Structural MRI showed bilateral midbrain damage and ventriculomegalia. Functional MRI revealed robust cortical responses to visual, auditory and tactile stimulation. Speech stimuli moreover consistently elicited activation in Broca's and Wernicke's areas. Familiar speakers and direct addressing evoked significantly stronger amygdala activation than unfamiliar speakers and neutral phrases. This study hence demonstrates the potential of functional neuroimaging in the investigation of residual higher cortical functions in unresponsive comatose patients.

Publication types

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

MeSH terms

  • Acoustic Stimulation
  • Adult
  • Amygdala / physiology
  • Cognition / physiology*
  • Coma / physiopathology*
  • Emotions / physiology*
  • Female
  • Frontal Lobe / physiology
  • Humans
  • Magnetic Resonance Imaging*
  • Persistent Vegetative State / physiopathology*
  • Photic Stimulation
  • Physical Stimulation
  • Speech Perception / physiology
  • Temporal Lobe / physiology