Fig. 2: Familiarity effects and memory effects.
From: Memory for nonadjacent dependencies in the first year of life and its relation to sleep
ERPs and the spatial distribution of the effects of the encoding and memory test phases time-locked to the onset of the suffixes (b and d). Negativity is plotted upward. Source data are provided as a Source Data file. For responses at individual electrode positions, see Supplementary Figs. 1–3. a The three familiarity effects of the encoding phase in the overall group (N = 85 infants), and the ERPs over the frontal and central regions for the first half (grey lines) and the second half (black lines) of the encoding phase in the overall group, the wake group (N = 37 infants), and the nap group (N = 48 infants). Voltage maps represent ERP differences between the responses in the first and the second half of the encoding session. b The memory effects at early and late latencies, no memory effect at middle latency in the overall group (N = 85 infants), and the ERPs over frontal and central regions for regular (black lines) and irregular (grey lines) sentences averaged across all phrases, phrases with old verb stems, and phrases with new verb stems. Voltage maps represent ERP differences between irregular and regular sentences. c The mid-latency memory effect in the wake group (N = 37 infants) and ERPs over frontal and central regions for old and new verb stems. Voltage maps as in 2b. d The mid-latency memory effect in the nap group (N = 48 infants) and ERPs over frontal and CPO regions for old and new verb stems. The CPO region included the central and parietal-occipital regions. Voltage maps as in 2b.
