Suzuki Miho, Gyoba Jiro, Sakuta Yuiko
Department of Psychology, Graduate School of Arts and Letters, Tohoku University, 27-1 Kawauchi, Aoba-ku, Sendai 980-8576, Japan.
Neurosci Lett. 2005 Feb 25;375(1):53-8. doi: 10.1016/j.neulet.2004.10.065. Epub 2004 Dec 8.
We used 24-channel near-infrared spectroscopy (NIRS) to measure activity in the temporal, parietal, and frontal regions of the brain in eight Japanese women while the participants rated line drawings using semantic differential scales. Participants rated the seven line drawings on 15 bipolar semantic scales, each of which belonged to one of three semantic classes: Evaluation, Activity, or Potency. Suzuki et al. [M. Suzuki, J. Gyoba, Y. Sakuta, Multichannel near-infrared spectroscopy analysis of brain activities during semantic differential rating of drawings, Tohoku Psychologica Folia 62 (2003) 86-98.] had reported previously that the right superior temporal gyrus and the right inferior parietal lobule are associated with Activity rating, while the brain regions around the central fissure were related to Potency rating. Based on these suggestions, we investigated the brain activity in these regions during rating of stimuli containing different affective polarities. When drawings were reported as 'static' or 'calm', oxyhemoglobin concentration was higher around the right superior temporal gyrus as compared to when they were considered 'noisy' or 'excitable'. Oxyhemoglobin concentrations around the central fissure were also higher when drawings were rated as 'soft', 'smooth', or 'blunt' compared to 'hard', 'rough', or 'sharp'. Any characteristic oxyhemoglobin changes were not found during the ratings on the evaluation scales. Our results suggest that activation patterns of the temporal and parietal regions are significantly modified by semantic polarities of Activity and Potency.
我们使用24通道近红外光谱技术（NIRS），在8名日本女性参与者使用语义差异量表对线条画进行评分时，测量她们大脑颞叶、顶叶和额叶区域的活动。参与者在15个双极语义量表上对7幅线条画进行评分，每个量表属于三个语义类别之一：评价、活动或效价。铃木等人[M. Suzuki, J. Gyoba, Y. Sakuta, Multichannel near-infrared spectroscopy analysis of brain activities during semantic differential rating of drawings, Tohoku Psychologica Folia 62 (2003) 86 - 98.]此前曾报道，右侧颞上回和右侧顶下小叶与活动评分相关，而中央沟周围的脑区与效价评分相关。基于这些提示，我们研究了在对包含不同情感极性的刺激进行评分时，这些区域的大脑活动。当线条画被描述为“静态的”或“平静的”时，与被认为“嘈杂的”或“兴奋的”相比，右侧颞上回周围的氧合血红蛋白浓度更高。当线条画被评为“柔软的”、“光滑的”或“钝的”时，与“坚硬的”、“粗糙的”或“尖锐的”相比，中央沟周围的氧合血红蛋白浓度也更高。在评价量表评分过程中未发现任何特征性的氧合血红蛋白变化。我们的结果表明，颞叶和顶叶区域的激活模式会因活动和效价的语义极性而发生显著改变。
