Lin Zhicheng, Lin Yan, Han Shihui
Department of Psychology, Peking University, Beijing, China.
Biol Psychol. 2008 Jan;77(1):93-7. doi: 10.1016/j.biopsycho.2007.08.002. Epub 2007 Aug 19.
Behavioral studies suggest that self-construals play a key role in modulation of cognitive processing styles, leading to context-dependent or -independent mode of processing. The current work investigated whether the neural activity in the extrastriate cortex underlying global/local perception of compound stimuli can be modulated by self-construal priming that shifts self-construal towards the Eastern interdependent or Western independent self in Chinese participants. After primed with independent or interdependent self-construals, subjects were asked to discriminate global/local letters in a compound stimulus while event-related potentials (ERPs) were recorded. We found that, while the independent self-construal priming resulted in enlarged P1 amplitude to local than global targets at lateral occipital electrodes, a reverse pattern was observed after the interdependent self-construal priming. Our findings provide electrophysiological evidence that self-construal priming modulates visual perceptual processing in the extrastriate cortex.
行为学研究表明,自我建构在认知加工方式的调节中起着关键作用,从而导致依赖情境或独立于情境的加工模式。当前的研究调查了在中国参与者中,通过自我建构启动将自我建构转向东方的相互依存型自我或西方的独立型自我,是否能够调节复合刺激的整体/局部感知背后的纹外皮层的神经活动。在用独立或相互依存的自我建构进行启动后,要求受试者辨别复合刺激中的整体/局部字母,同时记录事件相关电位(ERP)。我们发现,独立自我建构启动导致枕外侧电极处对局部目标的P1波幅大于对整体目标的P1波幅,而相互依存自我建构启动后则观察到相反的模式。我们的研究结果提供了电生理证据,表明自我建构启动调节了纹外皮层的视觉感知加工。