Neural correlates of saccade planning in infants: a high-density ERP study

Csibra, Gergely and Tucker, L.A. and Johnson, M.H. (1998) Neural correlates of saccade planning in infants: a high-density ERP study. International Journal of Psychophysiology 29 (2), pp. 201-215. ISSN 0167-8760.

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Official URL: https://doi.org/10.1016/S0167-8760(98)00016-6

Abstract

Neural correlates of saccade planning in 6-month-old infants were investigated by high-density event-related potentials. Subjects made saccades to a target stimulus following a time gap from fixation stimulus offset (gap trials) or with the fixation stimulus still present (overlap trials). Like adults, infants were slower to make a saccade to the target when the fixation stimulus was still present. Strikingly, infants did not show clear evidence of the pre-saccadic components observed in adults which are thought to reflect cortical saccade planning processes. They did, however, show a left frontal positivity, which we suggest reflects cortical disinhibition of the colliculus initiated by fixation stimulus offset, and clear post-saccadic lambda waves. These results indicate that the frontal cortex already plays a role in action control by 6 months of age, while other aspects of cortical action planning may not yet be present in certain task situations.

Metadata

Item Type:	Article
School:	Birkbeck Faculties and Schools > Faculty of Science > School of Psychological Sciences
Depositing User:	Sarah Hall
Date Deposited:	05 Nov 2019 11:36
Last Modified:	02 Aug 2023 17:55
URI:	https://eprints.bbk.ac.uk/id/eprint/29790

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