Brain imaging reveals covert consciousness during behavioral unresponsiveness induced by propofol.

Brain imaging reveals covert consciousness during behavioral unresponsiveness induced by propofol.
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DOI:
10.1038/s41598-018-31436-z
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发表时间:
2018-09-04
期刊:
影响因子:
4.6
通讯作者:
Hudetz AG
Hudetz AG
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Huang Z;Vlisides PE;Tarnal VC;Janke EL;Keefe KM;Collins MM;McKinney AM;Picton P;Harris RE;Mashour GA;Hudetz AG

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通过脑成像检测行为无反应患者的隐蔽意识是非常有趣的,但仍然缺乏可重复的模型和来自独立来源的证据。在这里,我们证明了使用全身麻醉药在一个内的主题研究设计,以测试方法或评估隐蔽意识的统计范例的可能性。在健康志愿者中使用非侵入性神经成像,我们确定了一名健康的研究参与者,他能够表现出意志性心理意象的特定fMRI特征,而由于丙泊酚镇静而行为无反应。我们的研究结果揭示了一种新的模型,可以加速新方法的开发,以可重复地检测隐蔽意识,这是很难实现的异质性,有时临床不稳定的神经病理学患者。
Detecting covert consciousness in behaviorally unresponsive patients by brain imaging is of great interest, but a reproducible model and evidence from independent sources is still lacking. Here we demonstrate the possibility of using general anesthetics in a within-subjects study design to test methods or statistical paradigms of assessing covert consciousness. Using noninvasive neuroimaging in healthy volunteers, we identified a healthy study participant who was able to exhibit the specific fMRI signatures of volitional mental imagery while behaviorally unresponsive due to sedation with propofol. Our findings reveal a novel model that may accelerate the development of new approaches to reproducibly detect covert consciousness, which is difficult to achieve in patients with heterogeneous and sometimes clinically unstable neuropathology.
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