Sensory gain control (amplification) as a mechanism of selective attention: electrophysiological and neuroimaging evidence
Sensory gain control (amplification) as a mechanism of selective attention: electrophysiological and neuroimaging evidence
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DOI：
10.1098/rstb.1998.0281
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发表时间：
1998-08-29
期刊：
影响因子：
--
通讯作者：
Luck, SJ
中科院分区：
文献类型：
--
作者：
Hillyard, SA;Vogel, EK;Luck, SJ
生理和行为研究都表明，在选择性注意过程中，感觉通路中由刺激驱动的神经活动的幅度可以被调节。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起着重要作用。结合事件相关脑电位和神经影像学实验提供了有力证据，表明注意增益控制在纹外皮质区视觉加工的早期阶段起作用。这些数据支持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。
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).