Abstract：
:Understanding memory mechanisms is crucial in the study of infant social and cognitive development. Here, we show that the Nc ERP component, known to reflect frequency-related attentional and/or memory processes, is a good candidate to investigate infant recognition memory. Previous paradigms have only investigated the effect of frequency during on-line stimulus presentation, but not during stimulus encoding. In this paper, we present a novel method for measuring the neural correlates of recognition memory and the 'degree' of familiarity in 10- to 12-month-old infants. During a familiarization phase, two images were presented frequently, while another two images were presented infrequently to the infants. In the test phase, the infrequent familiar, the frequent familiar, and the novel stimuli, were all presented with equal probability. We found larger Nc amplitudes following the familiar stimuli compared to the novel ones. The 'degree' of familiarity, on the other hand, did not modulate the Nc amplitude. These results can only be explained with memory-related processes, since in our paradigm the on-line presentation frequency did not vary. Furthermore, the lack of familiarization frequency effect suggests that the Nc might be a neural correlate of declarative memory.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Linnert S,Tóth B,Nagy M,Parise E,Király Idoi
10.1016/j.neuropsychologia.2017.08.023subject
Has Abstractpub_date
2019-03-18 00:00:00pages
75-81eissn
0028-3932issn
1873-3514pii
S0028-3932(17)30317-2journal_volume
126pub_type
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