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Visualization of calculation centres by functional MRI for neurosurgery.

Authors
  • Ota, Takahiro
  • Kamada, Kyousuke
  • Aoki, Shigeki
  • Saito, Nobuhito
Type
Published Article
Journal
British Journal of Neurosurgery
Publisher
Informa UK (Taylor & Francis)
Publication Date
Aug 01, 2009
Volume
23
Issue
4
Pages
406–411
Identifiers
DOI: 10.1080/02688690902838815
PMID: 19637012
Source
Medline
License
Unknown

Abstract

We performed functional MRI with several semantic tasks to visualize parietal lobe functions. Twenty subjects were studied, including 9 normal controls and 11 patients with brain lesions. The calculation task was to simply add 3 numbers projected on a screen. Functional MRI showed the active pixels in the bilateral interparietal sulcus (especially the dominant side) and mean values and standard deviation of left/right ratios of active pixels in the interparietal sulcus were 1.63 +/- 0.57 in normal controls, and 1.64 +/- 0.72 in neurosurgical patients. In 3 patients, postoperative functional MRI well reflected sequential changes of their calculation ability. This technique is simple to apply to evaluate the severity of dyscalculia not only for parietal lobe lesions, but also for other diseases, such as developmental dyscalculia, autism and dementia.

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