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153 Brain event‐related potentials of six month old infants to changes in duration of speech segments
Author(s) -
Leppänen P.H.T.,
Lyytinen H.
Publication year - 1996
Publication title -
international journal of developmental neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.761
H-Index - 88
eISSN - 1873-474X
pISSN - 0736-5748
DOI - 10.1016/0736-5748(96)80342-x
Subject(s) - citation , duration (music) , event (particle physics) , psychology , history , library science , computer science , literature , art , physics , quantum mechanics
The prpse of this study was to assess if disturbanazs in visual system in children born pretcrm intluence maturation of visual-spatial functions and of occipital rhvthm in EEG. 60 prospectively followed-up children (gestational age c32 weeks) were assessed by detailed neurological, neuropsychological and ophthalmological examination and by quantitative EEG (QEEG) at the age of five years. 26 out of 58 children (44 %) had one ophthalmological finding or a combination of findings, 14 had strabismus, 13 hyperopia, R nystagmus, 5 greal myopia, 7 anisometropia, 7 astigmatism, 4 signiticant visual impairment, 4 optic atrophy, 2 retinopathy of prematurity. Qf the four visualspatial tests only in the test ‘Gestalt Closure’ the children with or without ophthalmological findings (T-test. p 0.017) and the children with or without strabismus (p 0.013) showed statistically significant difference. The difference between the groups was not significant in the occipital power of alpha. beta, theta and delta bands of QEEG. The results suggest that disturbances of primary visual system intluence visual-spatial perczption and brain maturation minimally. only visual-spatial test ‘&stall Closure’ was discriminative perhaps due to being more concerned with exact visual perception of details or being a more complex measure of brain functions.