Galetzka Cedric
Division of Cognitive Sciences, University of PotsdamPotsdam, Germany.
Front Psychol. 2017 Jul 31;8:1315. doi: 10.3389/fpsyg.2017.01315. eCollection 2017.
Meaning-making in the brain has become one of the most intensely discussed topics in cognitive science. Traditional theories on cognition that emphasize abstract symbol manipulations often face a dead end: The symbol grounding problem. The embodiment idea tries to overcome this barrier by assuming that the mind is grounded in sensorimotor experiences. A recent surge in behavioral and brain-imaging studies has therefore focused on the role of the motor cortex in language processing. Concrete, action-related words have received convincing evidence to rely on sensorimotor activation. Abstract concepts, however, still pose a distinct challenge for embodied theories on cognition. Fully embodied abstraction mechanisms were formulated but sensorimotor activation alone seems unlikely to close the explanatory gap. In this respect, the idea of integration areas, such as convergence zones or the 'hub and spoke' model, do not only appear like the most promising candidates to account for the discrepancies between concrete and abstract concepts but could also help to unite the field of cognitive science again. The current review identifies milestones in cognitive science research and recent achievements that highlight fundamental challenges, key questions and directions for future research.
大脑中的意义构建已成为认知科学中讨论最为激烈的话题之一。强调抽象符号操作的传统认知理论常常陷入死胡同:符号基础问题。具身化观点试图通过假设心智基于感觉运动体验来克服这一障碍。因此,近期行为学和脑成像研究的热潮聚焦于运动皮层在语言处理中的作用。具体的、与动作相关的词汇已获得令人信服的证据,表明它们依赖感觉运动激活。然而,抽象概念对具身化认知理论而言仍然构成独特挑战。完整的具身化抽象机制已被提出,但仅靠感觉运动激活似乎不太可能弥合解释上的差距。在这方面,诸如汇聚区或“中心-辐条”模型等整合区域的概念,不仅似乎是解释具体概念与抽象概念之间差异的最有希望的候选者,还可能有助于再次统一认知科学领域。本综述确定了认知科学研究中的里程碑以及近期成就,这些成就突出了基本挑战、关键问题和未来研究方向。