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Advances in Psychological Science    2015, Vol. 23 Issue (2) : 202-212     DOI: 10.3724/SP.J.1042.2015.00202
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Familiarity Contributes to Associative Memory: The Role of Unitization
ZHENG Zhiwei1,2; LI Juan1; XIAO Fengqiu3
(1 Center on Aging Psychology, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China) (2 University of Chinese Academy of Sciences, Beijing 100049, China) (3 Institute of Developmental Psychology, Beijing Normal University, Beijing 100875, China)
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Abstract  

Familiarity and recollection are two independent cognitive processes involved in recognition memory. It is traditionally believed that both familiarity and recollection can support item recognition, whereas only recollection can support associative recognition. However, the unitization hypothesis argues that familiarity can also make a contribution to associative memory when the to-be-remembered stimuli are unitized as a single unit. Here we review results from behavioral, electrophysiological and functional neuroimaging studies which all convergently show that unitization indeed induces the contribution of familiarity to the associative retrieval, and perirhinal cortex is involved in the unitized encoding processes and subsequent familiarity-based associative retrieval. Future studies need to overcome the methodological problems, to explore the brain functional network associated with unitized processes, and to use the unitized encoding strategies to improve episodic memory in selective populations.

Keywords unitization      familiarity      recollection      associative recognition      source memory      perirhinal cortex     
Corresponding Authors: LI Juan, E-mail: lijuan@psych.ac.cn   
Issue Date: 14 February 2015
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ZHENG Zhiwei
LI Juan
XIAO Fengqiu
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ZHENG Zhiwei,LI Juan,XIAO Fengqiu. Familiarity Contributes to Associative Memory: The Role of Unitization[J]. Advances in Psychological Science, 2015, 23(2): 202-212.
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http://journal.psych.ac.cn/xlkxjz/EN/10.3724/SP.J.1042.2015.00202     OR     http://journal.psych.ac.cn/xlkxjz/EN/Y2015/V23/I2/202
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