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Infants detect visual regularities during stimulus exposure: an EEG frequency tagging approach

par Capparini, Chiara ;Fourdin, Lauréline;Wens, Vincent ;Dontaine, Pauline ;De Tiege, Xavier ;Aeby, Alec ;Bertels, Julie
Référence International Conference on Interdisciplinary Advances in Statistical Learning (San Sebastian, Spain)
Publication Publié, 2024-06

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Résumé :

Developmental research has mostly investigated statistical learning skills with post-exposure behavioural tasks. These tasks only reveal the outcome of learning and may lead to ambiguous interpretations. Steady-state evoked potentials (SSEPs) can be acquired while learning occurs and can shed light onto the temporal course of learning. At present, SSEPs investigations in this field have been limited to auditory stimuli (Choi et al., 2020). Here we used SSEPs to investigate infants’ neural entrainment in response to visual regularities. Four- to six-month-old infants (N=30) were presented with continuous streams of shapes flashing at 6 Hz. Shapes could be either organised in doublets or randomly presented. We compared SSEPs at the frequency of stimulation (6 Hz and harmonics) and at the doublet frequency (3 Hz and harmonics) across doublet and random presentations. For the doublet organization, we hypothesised a response at 3 Hz and harmonics. Results revealed that neural entrainment at the base frequency did not differ across conditions. On the other hand, infants in the doublet condition showed significantly greater responses at the doublet frequency than those in the random presentation. Overall, frequency tagging appears a promising tool for developmental research and can provide an early neural signature of visual statistical learning.