Hillyard S A, Vogel E K, Luck S J
Department of Neurosciences, University of California, San Diego, La Jolla 92093-0608, USA.
Philos Trans R Soc Lond B Biol Sci. 1998 Aug 29;353(1373):1257-70. doi: 10.1098/rstb.1998.0281.
Both physiological and behavioral studies have suggested that stimulus-driven neural activity in the sensory pathways can be modulated in amplitude during selective attention. Recordings of event-related brain potentials indicate that such sensory gain control or amplification processes play an important role in visual-spatial attention. Combined event-related brain potential and neuroimaging experiments provide strong evidence that attentional gain control operates at an early stage of visual processing in extrastriate cortical areas. These data support early selection theories of attention and provide a basis for distinguishing between separate mechanisms of attentional suppression (of unattended inputs) and attentional facilitation (of attended inputs).
生理学和行为学研究均表明，在选择性注意过程中，感觉通路中由刺激驱动的神经活动在幅度上能够被调节。事件相关脑电位的记录表明，这种感觉增益控制或放大过程在视觉空间注意中发挥着重要作用。结合事件相关脑电位和神经成像实验提供了强有力的证据，证明注意增益控制在纹外皮层区域的视觉处理早期阶段起作用。这些数据支持了注意的早期选择理论，并为区分注意抑制（对未被注意的输入）和注意促进（对被注意的输入）的不同机制提供了基础。
