Neural correlates of visuospatial imagery.

Full Abstract

We studied changes in regional cerebral blood flow (rCBF) in 10 healthy right-handed subjects during a visuospatial imagery task. The subject's task consisted of drawing imagined lines connecting encircled numbers in ascending order and estimating the number of lines crossing. Compared with a control task in which there were no crossed lines, there were significant rCBF increases in the cingulate gyrus, the adjacent superior frontal gyrus and in the left inferior parietal cortex. The rCBF changes of the latter area correlated with task performance time. Since these activation areas are close to those in imagery of movement trajectories, we concluded that they appear to be a subsystem for processing mental visuospatial images.

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Author information

Author/s: Suchan, Boris (B); Yágüez, Lidia (L); Wunderlich, Gilbert (G); Canavan, Anthony G M (AG); Herzog, Hans (H); Tellmann, Lutz (L); Hömberg, Volker (V); Seitz, Rüdiger J (RJ);

Affiliation: Department of Clinical Neuropsychology, Ruhr-University of Bochum, Universitatsstr. 150, 44780, Bochum, Germany. boris.suchan(-atsign-)ruhr-uni-bochum.de

Journal and publication information

Publication Type: Clinical Trial; Journal Article

Journal: Behavioural brain research (Behav Brain Res), published in Netherlands. (Language: eng)

Reference: 2002-Apr; vol 131 (issue 1-2) : pp 163-8

Dates: Created 2002/03/07; Completed 2002/05/03; Revised 2006/03/01;

PMID: 11844583, status: MEDLINE (last retrieval date: 12/26/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adult
Brain - radionuclide imaging
Cerebrovascular Circulation - physiology
Female
Frontal Lobe - blood supply; physiology; radionuclide imaging
Humans

Humans
Imagination - physiology
Male
Parietal Lobe - blood supply; physiology; radionuclide imaging
Reaction Time - physiology
Tomography, Emission-Computed

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