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Asymmetry in infant hemispheric readiness after exposure to a visual stimulus
Author(s) -
Catherwood Di,
Cramm Amanda,
Foster Helen
Publication year - 2003
Publication title -
developmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.801
H-Index - 127
eISSN - 1467-7687
pISSN - 1363-755X
DOI - 10.1111/1467-7687.00255
Subject(s) - psychology , stimulus (psychology) , visual field , audiology , saccadic masking , visual perception , second order stimulus , developmental psychology , eye movement , perception , neuroscience , cognitive psychology , medicine
Abstract This experiment assessed whether prior exposure to one visual stimulus could result in differential hemispheric responsiveness to a subsequent visual stimulus. The latency of saccadic orientation to a star‐shaped stimulus in the left or right visual field was assessed for 24 infants (mean age 22 weeks, SD 4.5) after exposure to either an upright or inverted facial pattern in the central visual field. The response to the lateral stimulus was equivalent in either visual field after exposure to the inverted facial pattern, but was significantly slower ( p = 0.043) in the LVF (RH) than the RVF (LH) following presentation of the upright facial pattern. The outcome confirms that the processing of one visual stimulus may lead to differential hemispheric readiness to engage with a subsequent visual stimulus.