Perceptual effects of stimulating V5/hMT+ during binocular rivalry are state specific
Perceptual effects of stimulating V5/hMT+ during binocular rivalry are state specific
复制标题
双眼竞争期间刺激 V5/hMT 的感知效果是特定于状态的
DOI：
10.1016/j.cub.2013.09.002
复制
发表时间：
2013
期刊：
影响因子：
9.2
通讯作者：
Bartels A
中科院分区：
文献类型：
--
作者：
Zaretskaya N;Bartels A
当两种不同的视觉刺激分别呈现给每只眼睛时，就会发生双眼竞争，从而导致感知模糊。然后，观察者的意识状态在其中一种刺激的感知占主导地位而另一种刺激受到抑制之间交替，反之亦然。在持续视觉刺激过程中感知的这些生动变化使得我们能够研究涉及有意识视觉体验的大脑过程。有大量的电生理学和功能磁共振成像证据表明，颞叶刺激选择性区域的神经活动与竞争期间的知觉变化相关[1-3]。然而，人们对这些区域对其偏好刺激的主导和抑制的因果贡献几乎一无所知。我们使用向一只眼睛呈现的移动点和另一只眼睛呈现的静态面部来诱导人类观察者的双眼竞争，并在运动区域 V5/hMT+ 上应用经颅磁刺激 (TMS)。我们发现，在竞争期间扰乱 V5/hMT+ 的活动会延长运动抑制期，但对运动优势期没有影响，这揭示了 V5/hMT+ 对竞争意识竞争的特定状态贡献。
Binocular rivalry occurs when two distinct visual stimuli are presented separately to each eye, causing perceptual ambiguity. The conscious state of the observer then alternates between the perceptual dominance of one of the stimuli while the other is suppressed, and vice versa. These vivid changes in perception during constant visual stimulation allow the study of brain processes involved in conscious visual experience. There is abundant electrophysiological as well as fMRI evidence that neural activity in stimulus-selective areas of the temporal lobe correlates with perceptual changes during rivalry [1–3]. Yet, almost nothing is known about the causal contribution of these areas to dominance and suppression of their preferred stimulus. We induced binocular rivalry in human observers using moving dots presented to one eye and a static face to the other eye, and applied transcranial magnetic stimulation (TMS) over the motion area V5/hMT+. We show that disrupting activity in V5/hMT+ during rivalry extends periods of motion suppression, with no effect on periods of motion dominance, revealing a state-specific contribution of V5/hMT+ to the competition for awareness in rivalry.
DOI：
10.1073/pnas.94.7.3408
发表时间：
1997-04-01
影响因子：
11.1
作者：
Shenberg, DL;Logothetis, NK
通讯作者：
Logothetis, NK
影响因子：
56.9
作者：
LOGOTHETIS, NK;SCHALL, JD
通讯作者：
SCHALL, JD
影响因子：
9.2
作者：
Zaretskaya, Natalia;Thielscher, Axel;Bartels, Andreas
通讯作者：
Bartels, Andreas