The neural signature of extracting emotional content from rapid visual streams at multiple presentation rates: A cross-laboratory study
The neural signature of extracting emotional content from rapid visual streams at multiple presentation rates: A cross-laboratory study
复制标题
DOI：
10.1111/psyp.13222
复制
发表时间：
2018-12-01
期刊：
影响因子：
3.7
通讯作者：
Mueller, Matthias M.
中科院分区：
文献类型：
--
作者：
Bekhtereva, Valeria;Pritschmann, Ricarda;Mueller, Matthias M.
稳态视觉诱发电位（SSVEP）是一种注意力资源分配的神经特征，情感视觉场景比中性视觉场景增强。最近，研究表明，与快速连续观看不愉快场景相关的早期视觉皮层的调节依赖于从快速连续视觉呈现（RSVP）中以6赫兹（类似于每张图像167毫秒）显示的每张图像中提取情感内容。出乎意料的是，与中性场景相比，在观看令人不快的视觉流时，SSVEP降低了。在这里，我们调查了这一发现在多大程度上仅限于6赫兹的频率，以及它是否适用于令人愉快的图片。我们记录了以3,4,6.67和8.57 Hz频率呈现的中性和情绪场景的RSVP引发的ssvep。我们证明，与呈现率为3,4和8.57 Hz的中性图像相比，令人不快的图像的SSVEP振幅增强。相比之下，相对于显示在6.67 Hz的中性RSVP流，愉快和不愉快的SSVEP都有所下降。我们的研究结果表明，RSVP中每个单独图像诱发的erp的线性叠加可能导致SSVEP振幅模式在驱动频率下增加或减少功率，这反过来可能产生观察到的差异情绪振幅调制。研究结果为使用RSVP范式研究SSVEP持续感知情感场景时早期视觉皮层调制的时间动态提供了新的方法考虑。
The steady-state visual evoked potential (SSVEP), a neural signature of attentional resource allocation, is enhanced for affective compared to neutral visual scenes. Recently, it has been demonstrated that modulation of early visual cortex associated with viewing of unpleasant scenes presented in a rapid succession relies on emotional content extraction from each individual image shown in a rapid serial visual presentation (RSVP) at 6 Hz (similar to 167 ms per image). Against expectations, the SSVEP was reduced when viewing visual streams of unpleasant compared to neutral scenes. Here, we investigated to what extent that finding was limited to the 6 Hz rate and whether it generalizes to pleasant pictures. We recorded SSVEPs elicited by RSVP of neutral and emotional scenes presented at 3, 4, 6.67, and 8.57 Hz rates. We demonstrated that SSVEP amplitudes were enhanced for unpleasant compared to neutral images with a presentation rate of 3, 4, and 8.57 Hz. By contrast, SSVEP decreased for both pleasant and unpleasant relative to neutral RSVP streams shown at 6.67 Hz. Our findings suggest that a linear superposition of ERPs evoked by each individual image in an RSVP may lead to SSVEP amplitude patterns that increase or decrease the power at the driving frequency, which in turn might produce the observed differential emotional amplitude modulations. The results provide new methodological considerations for investigating temporal dynamics of early visual cortex modulation during sustained perception of affective scenes with SSVEP using RSVP paradigms.