人类极的一个熟悉的面孔和人体处理区域
Ben Deen1,2, Gazi Husain3, Winrich A Freiwald2
1Department of Psychology and Brain Institute, Tulane University, New Orleans, LA 70118.
概括
极 (TP) 通过将视觉输入与人的身份联系起来来处理熟悉的面孔. 这个大脑区域将面部信息与社会认知相结合,揭示了理解熟悉个体的关键联系.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
背景情况:
- 时间极 (TP) 假设将熟悉的面孔与人的身份联系起来.
- 在TP中的磁感应器件在历史上阻碍了fMRI研究.
- 以前的研究缺乏关于TP在熟悉面部处理中的作用的明确证据.
研究的目的:
- 通过使用优化的fMRI技术,研究极 (TP) 在处理熟悉的面孔中的作用.
- 识别特定的大脑区域参与识别熟悉和不熟悉的面孔.
- 探索TP与与社会认知相关的其他大脑网络的功能连接.
主要方法:
- 利用先进的fMRI数据采集和分析方法来减轻磁感应器件.
- 向参与者提供视觉刺激,包括熟悉的面孔,不熟悉的面孔,物体和场景.
- 分析了TP和周围区域的脑活动,包括周围大脑皮层 (PR).
- 在各种认知任务中检查TP,PR和其他皮质区域之间的功能连接.
主要成果:
- 在TP中确定了可靠的"熟悉面孔反应",与对陌生面孔,物体或场景的反应不同.
- 该TP不仅对熟悉的面孔做出反应,还对各种社会认知任务 (语义,情节,思想理论) 作出反应.
- 附近的外皮层 (PR) 区域对面部表现出了特定的反应,但不是社会认知任务.
- TP与社会认知网络具有功能连接性,而PR与视觉面部处理领域相连.
结论:
- TP是处理熟悉面孔的关键大脑区域,将视觉信息与有关个体的更高层次概念知识集成在一起.
- 个人和面部信息的单独处理流汇聚在前部区域,包括TP.
- 这项研究确定了识别和理解熟悉的人的关键神经基质,进步了我们对人类面部处理系统的知识.
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