Recognition memory strength is predicted by pupillary responses at encoding while fixation patterns distinguish recollection from familiarity
Recognition memory strength is predicted by pupillary responses at encoding while fixation patterns distinguish recollection from familiarity
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DOI：
10.1080/17470218.2011.588335
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发表时间：
2011-01-01
影响因子：
1.7
通讯作者：
Montaldi, Daniela
中科院分区：
文献类型：
--
作者：
Kafkas, Alexandros;Montaldi, Daniela
三十五名健康参与者顺便编码了一组人造和自然物体的图片，同时记录了他们的瞳孔反应和眼球运动。在检索时，研究过的刺激和新刺激被评定为新颖的、熟悉的（强、中或弱）或回忆的。我们发现编码时的瞳孔反应和注视模式都可以预测后来的识别记忆强度。人们发现伴随偶然编码的瞳孔反应程度可以预测随后的记忆。此外，注视次数也可以预测后来的识别记忆强度，这表明积累更多的视觉细节，即使对于单个物体，对于创建强大的记忆也至关重要。此外，编码时的注视模式区分了回忆和检索时的熟悉性，更分散的注视预测熟悉性，更集中的注视预测回忆。这些数据一方面揭示了瞳孔反应和眼球运动模式的自主控制与另一方面记忆编码之间的密切联系。此外，这些数据说明了刺激的附带视觉处理的定量和定性差异，这些差异可以不同地预测识别时经历的记忆的强度和类型。
Thirty-five healthy participants incidentally encoded a set of man-made and natural object pictures, while their pupil response and eye movements were recorded. At retrieval, studied and new stimuli were rated as novel, familiar (strong, moderate, or weak), or recollected. We found that both pupil response and fixation patterns at encoding predict later recognition memory strength. The extent of pupillary response accompanying incidental encoding was found to be predictive of subsequent memory. In addition, the number of fixations was also predictive of later recognition memory strength, suggesting that the accumulation of greater visual detail, even for single objects, is critical for the creation of a strong memory. Moreover, fixation patterns at encoding distinguished between recollection and familiarity at retrieval, with more dispersed fixations predicting familiarity and more clustered fixations predicting recollection. These data reveal close links between the autonomic control of pupil responses and eye movement patterns on the one hand and memory encoding on the other. Moreover, the data illustrate quantitative as well as qualitative differences in the incidental visual processing of stimuli, which are differentially predictive of the strength and the kind of memory experienced at recognition.