The classical Stroop interference task as a prefrontal activation probe:: a validation study using 99Tcm-ECD brain SPECT

被引:35
作者
Audenaert, K [1 ]
Lahorte, P [1 ]
Brans, B [1 ]
Van Laere, K [1 ]
Goethals, I [1 ]
Van Heeringen, K [1 ]
Dierckx, RA [1 ]
机构
[1] Ghent Univ Hosp, Dept Nucl Med, B-9000 Ghent, Belgium
关键词
SPECT; ECD; brain activation; neuropsychological test; Stroop; SPM; split dose;
D O I
10.1097/00006231-200102000-00004
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
This study investigated the feasibility of brain single photon emission computed tomography (SPECT) functional imaging in a neuropsychological test setting, following a single-day protocol with a split-dose paradigm. The Stroop Color Word Test (SCWT) is an example of a well-documented prefrontal activation task. In a split-dose protocol, ten right-handed health!: volunteers were injected twice with 370 MBq Tc-99(m)-ethyl cysteinate dimer while performing consecutively both series of card-reading of the SCWT. Images were reconstructed using filtered back-projection and normalized to a standard template in Talairach coordinates. Statistical Parametric Mapping (SPM96) was used to determine voxelwise significant changes. A first activation cluster was found in the left medial prefrontal cortex, consisting of the gyrus cinguli anterior and the gyrus frontalis medius and superior. A second activation cluster included the right gyrus frontalis dorsalis and medius. These findings confirm to a large extent the results of previous functional magnetic resonance imaging, positron emission tomography studies of Stroop-like tasks. The choice and validity of various methodological characteristics of the experimental design leading to these results is critically discussed. It is concluded that brain SPECT activation with the Stroop Color Word Test under standard neuropsychological conditions in healthy volunteers, is both technically and practically feasible. ( (C) 2001 Lippincott Williams & Wilkins).
引用
收藏
页码:135 / 143
页数:9
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