固定位置区域提示下视觉注意范围等级的ERP研究
的一些研究[4]表明:空间位置的信息是先于其它信息被加工的,空间定位是加工其它客体信息的前提。通过与罗跃嘉实验比较,实验设计上的主要区别在于本实验减少了空间定位的因素,从而突出了注意范围的作用。本实验结果与之最大的不同正是ERP早成分(P1、N1)的不同,这就提示与空间定位有关的信息很可能是在ERP早成分中加工的。这一点支持视觉信息串行加工的观点,它至少提示空间定位是早于客体自身属性信息被加工的。
5 小结
本实验结果提示:①视觉注意诱发的P1、N1成分主要与空间定位信息的加工相关,与提示范围大小无关;②在视觉信息加工过程中,空间位置的信息要早于其它信息被加工,支持视觉信息串行加工观点;③刺激物信息的加工速度及相关神经活动强度与“注意范围比例”关系密切,而不是与注意范围呈简单的线性关系;④提示物诱发的P2、N2成分与注意范围相关;⑤刺激间隔不仅影响视觉早期信息加工,而且会对目标自身特征信息的加工产生影响。
【参考文献】
1 Picton T W,Lins O G,Scherg M.The recording and analysis of event-related potentials.Handbook of Neuropsychology,Vol 10.Amsterdam:Elsevier,1995.3~73
2 Posner,M I.Orienting of attention.Quarterly Journal of Experimental Psychology,1980,32:3~25
3 Hawkins H.L.,Hillyard S A,.Luck S J,Mouloua M,et al.Visual attention modulates signal detectability,Journal of Experimental Psychology.:Human Perception Performance,1990,16:802~811
4 Hillyard S A,Anllo-Vento L,Event-related brain potentials in the study of visual selective attention,Proc.Natl.Acad.Sci.USA,1998,95:781~787
5 Mangun G R..Neural mechanism of visual seletive attention.Psychophysiology,1995,32:4~18
6 Hopfihger J B,Mangun G R.Reflexive attention modulates processing of visual stimuli in human extrastriate cortex.Psychological Science,1
7 Luck S J,Hillyard S A,Mouloua M,et al.Effects of spatial cuing on luminance detectability:psychophysical and electrophysiological evidence for early selection.Journal of experimental psychology:human perception and performance,1994,20:887~904
8 Luo Y J,Greenwood P M,Parasuraman R.Dynamics of the spatial scale of visual attention revealed by brain event-related potentials.Cognitive Brain Research,2001,12:371~381
9 Luo Y J,Parasuraman R.The early ERP effects reflect neural activity in spatial scale of visual attention.Acta Psychologica Sinica,2001,33:385~389
(罗跃嘉,Parasuraman.早期ERP效应揭示视觉注意空间等级的脑调节机制.心理学报,2001,33:385~389)
《固定位置区域提示下视觉注意范围等级的ERP研究(第3页)》
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5 小结
本实验结果提示:①视觉注意诱发的P1、N1成分主要与空间定位信息的加工相关,与提示范围大小无关;②在视觉信息加工过程中,空间位置的信息要早于其它信息被加工,支持视觉信息串行加工观点;③刺激物信息的加工速度及相关神经活动强度与“注意范围比例”关系密切,而不是与注意范围呈简单的线性关系;④提示物诱发的P2、N2成分与注意范围相关;⑤刺激间隔不仅影响视觉早期信息加工,而且会对目标自身特征信息的加工产生影响。
【参考文献】
1 Picton T W,Lins O G,Scherg M.The recording and analysis of event-related potentials.Handbook of Neuropsychology,Vol 10.Amsterdam:Elsevier,1995.3~73
2 Posner,M I.Orienting of attention.Quarterly Journal of Experimental Psychology,1980,32:3~25
3 Hawkins H.L.,Hillyard S A,.Luck S J,Mouloua M,et al.Visual attention modulates signal detectability,Journal of Experimental Psychology.:Human Perception Performance,1990,16:802~811
4 Hillyard S A,Anllo-Vento L,Event-related brain potentials in the study of visual selective attention,Proc.Natl.Acad.Sci.USA,1998,95:781~787
5 Mangun G R..Neural mechanism of visual seletive attention.Psychophysiology,1995,32:4~18
6 Hopfihger J B,Mangun G R.Reflexive attention modulates processing of visual stimuli in human extrastriate cortex.Psychological Science,1
998,9:441~447
7 Luck S J,Hillyard S A,Mouloua M,et al.Effects of spatial cuing on luminance detectability:psychophysical and electrophysiological evidence for early selection.Journal of experimental psychology:human perception and performance,1994,20:887~904
8 Luo Y J,Greenwood P M,Parasuraman R.Dynamics of the spatial scale of visual attention revealed by brain event-related potentials.Cognitive Brain Research,2001,12:371~381
9 Luo Y J,Parasuraman R.The early ERP effects reflect neural activity in spatial scale of visual attention.Acta Psychologica Sinica,2001,33:385~389
(罗跃嘉,Parasuraman.早期ERP效应揭示视觉注意空间等级的脑调节机制.心理学报,2001,33:385~389)
《固定位置区域提示下视觉注意范围等级的ERP研究(第3页)》