感知和记忆恢复参与人体腹腔皮层内重叠的面部选择性区域
Yvonne Y Chen1, Aruni Areti2, Daniel Yoshor3
1Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104 brett.foster@pennmedicine.upenn.edu yvonne.chen@pennmedicine.upenn.edu.
概括
记住面孔涉及重新激活的大脑模式,但与场景不同,面部检索在腹腔皮层 (VTC) 显示了一个狭窄的模式,没有一个一致的前部转移. 这突出了个别的VTC组织组织.
科学领域:
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
- 人类内录音记录
背景情况:
- 感官恢复理论认为,回忆过去的经历会重新激活与初始感知有关的特定大脑区域.
- 关于场景记忆的研究表明,与感知相比,在检索过程中神经活动的空间转移 (前置化) 与感知相比.
- 在其他刺激类别 (如面部) 中,这种空间转换的证据仍然不一致,由于大脑组织的个体差异,这带来了挑战.
研究的目的:
- 为了调查是否在面部记忆检索过程中发生神经活动的空间转换.
- 在面部感知和检索过程中检查面部皮层 (VTC) 中个别面部选择区域内的活动模式.
- 将面部记忆中的神经活动模式与场景记忆研究中的发现进行比较.
主要方法:
- 使用功能磁共振成像 (fMRI) 进行多会话神经成像研究,以绘制VTC中的个别面部选择区域的地图.
- 第二次会议的重点是检查这些映射区域内的面部记忆编码和检索过程中的活动模式.
- 包括在相同的实验条件下从VTC获得的人体内记录.
主要成果:
- 在VTC中的面部选择性区域在编码和记忆检索时的面部感知过程中都被激活.
- 与感知相比,记忆检索在面部选择性区域内显示出更有选择性和更狭窄的恢复模式.
- 在面部记忆检索过程中没有观察到活动的一致空间转换 (例如,前部化).
- 内记录证实了fMRI关于面部记忆期间活动模式的发现.
结论:
- 在面部记忆检索过程中神经活动的特点是,在类别选择性皮层内选择性和狭窄的恢复.
- 与场景记忆不同,VTC中的面部记忆检索不表现出一致的前方空间转移.
- 类别选择性皮质的复杂,个体特定的组织对于理解感知到记忆的转换至关重要.
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