Shamay-Tsoory Simone G, Lavidor Michal, Aharon-Peretz Judith
Department of Psychology and Brain & Behavior Center, University of Haifa, Aba Hushi, Haifa 31905, Israel.
Brain Cogn. 2008 Aug;67(3):280-91. doi: 10.1016/j.bandc.2008.02.001. Epub 2008 Mar 17.
Although neuropsychological studies of lateralization of emotion have emphasized valence (positive vs. negative) or type (basic vs. complex) dimensions, the interaction between the two dimensions has yet to be elucidated. The purpose of the current study was to test the hypothesis that recognition of basic emotions is processed preferentially by the right prefrontal cortex (PFC), whereas recognition of complex social emotions is processed preferentially by the left PFC. Experiment 1 assessed the ability of healthy controls and patients with right and left PFC lesions to recognize basic and complex emotions. Experiment 2 modeled the patient's data of Experiment 1 on healthy participants under lateralized displays of the emotional stimuli. Both experiments support the Type as well as the Valence Hypotheses. However, our findings indicate that the Valence Hypothesis holds for basic but less so for complex emotions. It is suggested that, since social learning overrules the basic preference of valence in the hemispheres, the processing of complex emotions in the hemispheres is less affected by valence.
尽管关于情绪偏侧化的神经心理学研究强调了效价（积极与消极）或类型（基本与复杂）维度，但这两个维度之间的相互作用尚未得到阐明。本研究的目的是检验以下假设：基本情绪的识别主要由右侧前额叶皮层（PFC）进行处理，而复杂社会情绪的识别主要由左侧PFC进行处理。实验1评估了健康对照组以及右侧和左侧PFC损伤患者识别基本情绪和复杂情绪的能力。实验2在情绪刺激的偏侧化展示条件下，以健康参与者为对象模拟了实验1中患者的数据。两个实验均支持类型假设以及效价假设。然而，我们的研究结果表明，效价假设适用于基本情绪，但对复杂情绪的适用性较低。研究表明，由于社会学习超越了半球中效价的基本偏好，因此半球中复杂情绪的处理受效价的影响较小。
