Brain Imaging and Behavior

, Volume 7, Issue 3, pp 353–361

Posterior cortical atrophy and Alzheimer’s disease: a meta-analytic review of neuropsychological and brain morphometry studies

  • Jorge Alves
  • José Miguel Soares
  • Adriana Sampaio
  • Óscar F. Gonçalves
Review Article

DOI: 10.1007/s11682-013-9236-1

Cite this article as:
Alves, J., Soares, J.M., Sampaio, A. et al. Brain Imaging and Behavior (2013) 7: 353. doi:10.1007/s11682-013-9236-1

Abstract

This paper presents the first systematic review and meta-analysis of neuropsychological and brain morphometry studies comparing posterior cortical atrophy (PCA) to typical Alzheimer’s disease (tAD). Literature searches were conducted for brain morphometry and neuropsychological studies including a PCA and a tAD group. Compared to healthy controls (HC), PCA patients exhibited significant decreases in temporal, occipital and parietal gray matter (GM) volumes, whereas tAD patients showed extensive left temporal atrophy. Compared to tAD patients, participants with PCA showed greater GM volume reduction in the right occipital gyrus extending to the posterior lobule. In addition, PCA patients showed less GM volume loss in the left parahippocampal gyrus and left hippocampus than tAD patients. PCA patients exhibit significantly greater impairment in Immediate Visuospatial Memory as well as Visuoperceptual and Visuospatial Abilities than patients with tAD. However, tAD patients showed greater impairment in Delayed Auditory/Verbal Memory than patients with PCA. PCA is characterized by significant atrophy of the occipital and parietal regions and severe impairments in visuospatial functioning.

Keywords

Alzheimer’s disease (AD)Posterior cortical atrophyMagnetic resonance imaging (MRI)Voxel-based morphometry (VBM)Meta-analysisEffect Size Signed Differential Mapping (ES-SDM)

Supplementary material

11682_2013_9236_MOESM1_ESM.docx (254 kb)
ESM 1(DOCX 254 kb)

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Jorge Alves
    • 1
    • 4
  • José Miguel Soares
    • 2
    • 3
  • Adriana Sampaio
    • 1
  • Óscar F. Gonçalves
    • 1
  1. 1.Neuropsychophysiology Lab, CIPsi, School of PsychologyUniversity of MinhoBragaPortugal
  2. 2.Life and Health Sciences Research Institute (ICVS), School of Health SciencesUniversity of MinhoBragaPortugal
  3. 3.ICVS/3B’s - PT Government Associate LaboratoryBraga/GuimarãesPortugal
  4. 4.Laboratório de Neuropsicofisiologia, Escola de PsicologiaUniversidade do MinhoBragaPortugal