Lesions of prefrontal cortex reduce attentional modulation of neuronal responses and synchrony in V4.

Lesions of prefrontal cortex reduce attentional modulation of neuronal responses and synchrony in V4.
复制标题

DOI:
10.1038/nn.3742
复制
发表时间:
2014-07
影响因子:
25
通讯作者:
Desimone, Robert
Desimone, Robert
中科院分区:
医学1区
文献类型:
--
作者:
Gregoriou, Georgia G.;Rossi, Andrew F.;Ungerleider, Leslie G.;Desimone, Robert

文献摘要

参考文献

被引文献

相似文献

人们普遍认为,前额叶皮层(PFC)的额叶眼场(FEF)调节视觉皮层的注意加工,尽管必要的作用的证据是模棱两可的。为了帮助识别V4区注意力反馈的关键来源,我们通过手术切除了一侧大脑半球的整个外侧PFC(包括FEF),并横切了两只猕猴的胼胝体和前连合。这剥夺了V4一侧半球的PFC输入,同时保持另一侧半球的完整性。在没有PFC的情况下,注意力对V4神经元反应和同步性的影响显着减少,其余的注意力的影响在时间上延迟,表明PFC的关键作用。相反,分心物捕获注意力,影响V4反应。然而,由于注意力在V4中的作用并没有被PFC的损伤所消除,因此在PFC之外,必须存在其他自上而下的注意力控制信号。
It is widely held that the frontal eye field (FEF) in prefrontal cortex (PFC) modulates processing in visual cortex with attention, although the evidence for a necessary role is equivocal. To help identify critical sources of attentional feedback to area V4, we surgically removed the entire lateral PFC, including the FEF, in one hemisphere and transected the corpus callosum and anterior commisure in two macaques. This deprived V4 of PFC input in one hemisphere while keeping the other hemisphere intact. In the absence of PFC, attentional effects on neuronal responses and synchrony in V4 were significantly reduced and the remaining effects of attention were delayed in time indicating a critical role of PFC. Conversely, distracters captured attention and influenced V4 responses. However, because the effects of attention in V4 were not eliminated by PFC lesions, other sources of top-down attentional control signals to visual cortex must exist outside of PFC.
早期视觉皮层中额叶信号的自下而上的门控。
DOI: 10.1126/science.1153276
发表时间: 2008-07-18
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Ekstrom LB;Roelfsema PR;Arsenault JT;Bonmassar G;Vanduffel W
通讯作者: Vanduffel W
DOI: 10.1126/science.1171402
发表时间: 2009-05-29
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Gregoriou GG;Gotts SJ;Zhou H;Desimone R
通讯作者: Desimone R
DOI: 10.1080/02643298608253360
发表时间: 1986-08-01
影响因子: 3.4
作者:
DUNCAN, J
通讯作者: DUNCAN, J
DOI: 10.1523/jneurosci.6295-11.2012
发表时间: 2012-05-16
影响因子: 5.3
作者:
Ninomiya, Taihei;Sawamura, Hiromasa;Takada, Masahiko
通讯作者: Takada, Masahiko
DOI: 10.1038/nature09995
发表时间: 2011-05-15
期刊: NATURE
影响因子: 64.8
作者:
Noudoost, Behrad;Moore, Tirin
通讯作者: Moore, Tirin