Amygdalar and hippocampal volumetry in control participants: differences regarding handedness.
作者： L. Rainey , J. Xiong , Jack L Lancaster , Charles A Szabo , Peter T Fox
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摘要: BACKGROUND AND PURPOSE: Amygdalar and hippocampal volume measurements indicate a right-greater-than-left asymmetry for right-handed normal participants in most studies. The purpose of this study was to compare amygdalar ratios between right- left-handed participants. METHODS: were performed 34 (20 14 left-handed) All completed 10-item handedness questionnaire. MR imaging sequence 3D T1-weighted gradient-echo acquisition the whole brain (24/6 [TR/TE]; flip angle, 25 degrees). images spatially normalized, volumes painted with 1.0-mm3 resolution cursor on an SGI workstation. RESULTS: In participants, amygdala hippocampus (P , .001 both) significantly larger right side than left. group did not show significant difference left-sided structures. Right-to-left differed both .02) .01) Gender affect right-to-left or CONCLUSION: Handedness, but gender, seems ratios.
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