Do animals and furniture items elicit different brain responses in human infants?

Author(s)
Susanna Jeschonek, Vesna Marinovic, Stefanie Hoehl, Birgit Elsner, Sabina Pauen
Abstract

One of the earliest categorical distinctions to be made by preverbal infants is the animate-inanimate distinction. To explore the neural basis for this distinction in 7-8-month-olds, an equal number of animal and furniture pictures was presented in an ERP-paradigm. The total of 118 pictures, all looking different from each other, were presented in a semi-randomized order for 1000 ms each. Infants' brain responses to exemplars from both categories differed systematically regarding the negative central component (Nc: 400-600 ms) at anterior channels. More specifically, the Nc was enhanced for animals in one subgroup of infants, and for furniture items in another subgroup of infants. Explorative analyses related to categorical priming further revealed category-specific differences in brain responses in the late time window (650-1550 ms) at right frontal channels: Unprimed stimuli (preceded by a different-category item) elicited a more positive response as compared to primed stimuli (preceded by a same-category item). In sum, these findings suggest that the infant's brain discriminates exemplars from both global domains. Given the design of our task, we conclude that processes of category identification are more likely to account for our findings than processes of on-line category formation during the experimental session. (C) 2009 Elsevier B.V. All rights reserved.

Organisation(s)
External organisation(s)
Ruprecht-Karls-Universität Heidelberg, Universität Potsdam
Journal
Brain & Development
Volume
32
Pages
863-871
No. of pages
9
ISSN
0387-7604
DOI
https://doi.org/10.1016/j.braindev.2009.11.010
Publication date
11-2010
Peer reviewed
Yes
Austrian Fields of Science 2012
Developmental psychology
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/do-animals-and-furniture-items-elicit-different-brain-responses-in-human-infants(db691754-a669-4b95-bcff-9615aaf680e0).html