de Toffol B, Autret A, Degiovanni E, Roux S
Clinique Neurologique, CHU Bretonneau, Tours, France.
Neuropsychologia. 1990;28(8):879-82. doi: 10.1016/0028-3932(90)90011-c.
This study tests the effect of maintaining right and left lateral gaze during a writing task which preferentially implicates the left hemisphere using an asymmetry parameter calculated from the spectral power of the alpha rhythm (RP-LP/RP + LP) in a right-handed patient undergoing the same experimental regimen nine times. A six derivation EEG was recorded. Maintaining left lateral gaze (toward the active hemisphere) removes the lateralization found during writing while staring straight ahead whereas maintaining right lateral gaze (toward the side opposite the active hemisphere) results in slightly lower values which are however, not significantly different from those obtained during staring straight ahead. This study adds an electrophysiologic aspect to Kinsbournes's paradigm on gaze position and hemispheric activation.
本研究通过计算右利手患者在九次相同实验方案中，书写任务期间保持左右侧凝视时，由阿尔法节律的频谱功率得出的不对称参数（RP-LP/RP + LP），测试其对优先涉及左半球的书写任务的影响。记录了六路脑电图。保持左侧凝视（朝向活跃半球）可消除向前直视时书写过程中发现的偏侧化现象，而保持右侧凝视（朝向活跃半球对侧）则导致数值略低，不过与向前直视时获得的值无显著差异。本研究为金布尔关于凝视位置和半球激活的范式增添了电生理方面的内容。
