Department of Psychology, Carl von Ossietzky University Oldenburg, Oldenburg 26129, Germany.
Department of Psychology, Hebrew University of Jerusalem, Jerusalem 91905, Israel.
Cereb Cortex. 2023 May 9;33(10):6291-6298. doi: 10.1093/cercor/bhac504.
Broadly congruent mirror neurons, responding to any grasp movement, and strictly congruent mirror neurons, responding only to specific grasp movements, have been reported in single-cell studies with primates. Delineating grasp properties in humans is essential to understand the human mirror neuron system with implications for behavior and social cognition. We analyzed electrocorticography data from a natural reach-and-grasp movement observation and delayed imitation task with 3 different natural grasp types of everyday objects. We focused on the classification of grasp types from high-frequency broadband mirror activation patterns found in classic mirror system areas, including sensorimotor, supplementary motor, inferior frontal, and parietal cortices. Classification of grasp types was successful during movement observation and execution intervals but not during movement retention. Our grasp type classification from combined and single mirror electrodes provides evidence for grasp-congruent activity in the human mirror neuron system potentially arising from strictly congruent mirror neurons.
在灵长类动物的单细胞研究中，已经报道了广泛一致的镜像神经元，它们对任何抓握动作都有反应，以及严格一致的镜像神经元，它们只对特定的抓握动作有反应。在人类中描述抓握特性对于理解具有行为和社会认知意义的人类镜像神经元系统至关重要。我们分析了来自自然伸手抓握运动观察和延迟模仿任务的脑电数据，该任务包含 3 种不同的日常物体的自然抓握类型。我们专注于从经典镜像系统区域（包括感觉运动、辅助运动、下额叶和顶叶皮层）中发现的高频宽带镜像激活模式对抓握类型进行分类。在运动观察和执行期间，抓握类型的分类是成功的，但在运动保持期间则不然。我们从组合和单个镜像电极进行的抓握类型分类为人类镜像神经元系统中潜在存在的严格一致的镜像神经元提供了与抓握一致的活动的证据。
