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Differential Frontal Cortex Activation Before Anticipatory and Reactive Saccades in Infants
Author(s) -
Csibra Gergely,
Tucker Leslie A.,
Johnson Mark H.
Publication year - 2001
Publication title -
infancy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 69
eISSN - 1532-7078
pISSN - 1525-0008
DOI - 10.1207/s15327078in0202_3
Subject(s) - psychology , stimulus (psychology) , saccade , neuroscience , neural correlates of consciousness , audiology , frontal cortex , developmental psychology , cognitive psychology , eye movement , cognition , medicine
Neural correlates of anticipatory and reactive saccades were studied in 4‐month‐old infants by recording high‐density event‐related potentials. Infants were presented with a fixed sequence of stimulus presentation to which they rapidly showed anticipatory saccades, as well as continuing with some reactive (stimulus‐driven) saccades. As in a previous study, no clear evidence was found for adultlike, saccade‐related potentials, although some presaccadic differences between reactive and anticipatory saccades were observed. Infants also showed different stimulus offset‐related effects preceding the 2 types of trials with a right‐frontal positivity when an anticipatory look follows, but only left‐frontal positivity when a reactive saccade follows.