互感信号塑造了最早的标记物和神经通路,在视觉值处实现意识
Viviana Leupin1, Juliane Britz1
1Department of Psychology, University of Fribourg, Fribourg CH-1700, Switzerland.
概括
心脏和呼吸循环期间的巴罗受体 (BR) 信号会影响与视觉意识相关的大脑活动. 这些感知信号影响早期的感官处理和意识感知,影响我们如何意识到刺激.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 生理学 生理学 生理学
背景情况:
- 来自巴罗受体 (BRs) 的间接信号随心脏和呼吸循环而变化.
- 这些变化可以调节皮质刺激性并影响意识.
- 正确的阶段,在哪里BRs影响意识相关的事件相关的潜力 (ERPs) 跨传感模式是辩论.
研究的目的:
- 研究心脏和呼吸系统如何影响与意识相关的ERP.
- 为了确定巴罗受体活动对视觉刺激和意识意识的处理的影响.
主要方法:
- 同时记录脑电图 (EEG),心电图 (ECG) 和呼吸.
- 试验对象用值刺激执行了一个视觉区分任务.
- 对ERP及其内生成器进行与意识或无意识感知刺激的比较,在心脏和呼吸阶段进行分析.
主要成果:
- 循环BR变异调节了早期电生理学标记 (P1) 和与意识相关的大脑活动轨迹.
- 在低BR活动 (透气/吸入) 期间,P1是最早的意识标志物.
- 视觉意识消极性 (VAN) 标志着在高BR活动 (抽缩/呼气) 期间的意识,表明BR干扰视觉处理.
- 在低BR活动期间,大脑活动从内脏区域转移到关联区域 (岛屿到前额叶皮质),在高BR活动期间从主要内脏到顶层皮质.
结论:
- BR信号的周期性波动对最早的意识电生理学标志物和潜在意识的神经过程产生影响.
- 意识意识的解决发生在低BR活动期间的认知/关联区域,在高BR活动期间的感知中心.
- BR信号在调节感官处理和意识感知方面发挥着重要作用.
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