Zacharia Angel Anna, Ahuja Navdeep, Kaur Simran, Mehta Nalin, Sharma Ratna
Stress and Cognitive Electroimaging Laboratory, Department of Physiology, All India Institute of Medical Sciences, New Delhi, 110029, India.
Cogn Process. 2020 May;21(2):239-251. doi: 10.1007/s10339-020-00957-9. Epub 2020 Feb 21.
The efficient processing of complex visual environments is essential for effective functioning. In the natural environment, processing the context is as important as the processing of the target object since no object can be found in isolation. Congruent object-context associations in a visual scene facilitate object recognition, whereas incongruent associations decrease performance accuracy. Although there is a performance reduction, incongruent scenes are reported to have a perceptual bias due to the reallocation of the attentional resources towards the associated semantic conflict. Another key attribute that prepares the visual system to identify the important aspects of the environment is valence, and any visual scene can be classified into one of the three valence categories. Hence, the current study was designed to investigate how valence influences the perceptual bias towards incongruent object-context associations. An intermittent binocular rivalry task was used to measure the perceptual bias across valence categories. The results revealed a significant predominance of incongruent pictures when the associated valence was negative and neutral and remained unbiased for positive valence. We propose a valence-congruency interaction in which perceptual bias towards incongruence is greatly influenced by valence.
高效处理复杂视觉环境对于有效运作至关重要。在自然环境中，处理背景与处理目标物体同样重要，因为没有物体是孤立存在的。视觉场景中一致的物体 - 背景关联有助于物体识别，而不一致的关联则会降低性能准确性。尽管性能会下降，但据报道，由于注意力资源重新分配到相关的语义冲突上，不一致的场景会产生感知偏差。另一个使视觉系统能够识别环境重要方面的关键属性是效价，任何视觉场景都可以分为三个效价类别之一。因此，本研究旨在调查效价如何影响对不一致物体 - 背景关联的感知偏差。使用间歇性双眼竞争任务来测量不同效价类别之间的感知偏差。结果显示，当相关效价为负和中性时，不一致图片具有显著优势，而对于正效价则保持无偏差。我们提出了一种效价 - 一致性相互作用，其中对不一致性的感知偏差受效价的极大影响。
