Santamaría-García Hernando, Pannunzi Mario, Ayneto Alba, Deco Gustavo, Sebastián-Gallés Nuria
Department of Technology, Center for Brain and Cognition, Universitat Pompeu Fabra, Roc Boronat 138, 08018 and Institució Catalana de Recerca i Estudis Avançats, ICREA, Passeig Lluís Companys 23, 08010 Barcelona, Spain
Department of Technology, Center for Brain and Cognition, Universitat Pompeu Fabra, Roc Boronat 138, 08018 and Institució Catalana de Recerca i Estudis Avançats, ICREA, Passeig Lluís Companys 23, 08010 Barcelona, Spain.
Soc Cogn Affect Neurosci. 2014 Oct;9(10):1489-97. doi: 10.1093/scan/nst133. Epub 2013 Aug 14.
So far, it was unclear if social hierarchy could influence sensory or perceptual cognitive processes. We evaluated the effects of social hierarchy on these processes using a basic visual perceptual decision task. We constructed a social hierarchy where participants performed the perceptual task separately with two covertly simulated players (superior, inferior). Participants were faster (better) when performing the discrimination task with the superior player. We studied the time course when social hierarchy was processed using event-related potentials and observed hierarchical effects even in early stages of sensory-perceptual processing, suggesting early top-down modulation by social hierarchy. Moreover, in a parallel analysis, we fitted a drift-diffusion model (DDM) to the results to evaluate the decision making process of this perceptual task in the context of a social hierarchy. Consistently, the DDM pointed to nondecision time (probably perceptual encoding) as the principal period influenced by social hierarchy.
到目前为止，尚不清楚社会等级制度是否会影响感觉或知觉认知过程。我们使用一项基本的视觉知觉决策任务来评估社会等级制度对这些过程的影响。我们构建了一个社会等级体系，参与者分别与两个暗中模拟的玩家（上级、下级）执行知觉任务。参与者在与上级玩家执行辨别任务时速度更快（表现更好）。我们使用事件相关电位研究了处理社会等级制度时的时间进程，并观察到即使在感觉-知觉处理的早期阶段也存在等级效应，这表明社会等级制度存在早期的自上而下的调节作用。此外，在一项平行分析中，我们将漂移扩散模型（DDM）应用于结果，以评估在社会等级制度背景下该知觉任务的决策过程。一致的是，DDM指出非决策时间（可能是知觉编码）是受社会等级制度影响的主要时期。
