Primary progressive aphasia accompanied by environmental sound agnosia: a neuropsychological, MRI and PET study

Psychiatry Res. 2006 Mar 31;146(2):191-7. doi: 10.1016/j.pscychresns.2005.12.003. Epub 2006 Feb 28.

Abstract

As part of the frontotemporal dementias, primary progressive aphasia (PPA) is typically characterized by nonfluent speech with paraphasias, but there is growing evidence that also a fluent variant of PPA exists. We describe a patient suffering from PPA who adds to the broad clinical spectrum of this disorder. Moreover, we report for the first time that PPA may be associated with severe impairment in meaningful nonverbal sound recognition (environmental sound agnosia). These neuropsychological findings were found to be associated with distinct focal alterations in functional and structural neuroimaging.

Publication types

  • Case Reports

MeSH terms

  • Aged
  • Aphasia / diagnosis*
  • Aphasia / etiology*
  • Auditory Perceptual Disorders / diagnosis
  • Auditory Perceptual Disorders / etiology*
  • Brain / metabolism*
  • Brain / pathology*
  • Dementia / complications*
  • Dementia / diagnosis*
  • Disease Progression
  • Environment*
  • Female
  • Fluorodeoxyglucose F18 / pharmacokinetics
  • Humans
  • Magnetic Resonance Imaging*
  • Neuropsychological Tests*
  • Positron-Emission Tomography*
  • Radiopharmaceuticals / pharmacokinetics
  • Recognition, Psychology
  • Severity of Illness Index

Substances

  • Radiopharmaceuticals
  • Fluorodeoxyglucose F18