Delayed visual maturation.
نویسندگان
چکیده
Sixteen blind babies who were considered to be showing the characteristics of delayed visual maturation were studied prospectively. The diagnosis was made on clinical grounds, and the criteria for this are discussed. All of these infants developed visual responses between 4 and 6 months of age and had normal or near normal visual acuities by 1 year of age. Long term follow up, however, has shown neurological abnormalities in some of these children.
منابع مشابه
Presynaptic development at L4 to l2/3 excitatory synapses follows different time courses in visual and somatosensory cortex.
Visual and somatosensory cortices exhibit profound experience-dependent plasticity during development and adulthood and are common model systems for probing the synaptic and molecular mechanisms of plasticity. However, comparisons between the two areas may be confounded by a lack of accurate information on their relative rates of development. In this study, we used whole-cell recording in acute...
متن کاملDelayed visual maturation in infancy.
We describe the clinical and electrodiagnostic features of 8 infants who showed no visual responsiveness and were thought to be severely visually impaired on initial examination. Subsequently all children developed normal visual capabilities and the previously abnormal visually evoked potentials became normal. The clinical and electrodiagnostic features of these infants suggest that they suffer...
متن کاملSTagES Of PLUMagE MaTURaTION Of THE TaWNY-BELLIED SEEDEaTER: EVIDENCE Of DELaYED PLUMagE MaTURaTION aND CRYPTIC DIffERENTIaTION BETWEEN JUVENILES aND fEMaLES
In some sexually dichromatic passerines, juvenile males retain a plumage similar to that of adult females through their first year or longer (delayed plumage maturation). The Tawny-bellied Seedeater (Sporophila hypoxantha) is a sexually dichromatic species in which, to the human eye, the juveniles look like females. We analyzed the species’ stages of plumage maturation by reflectance spectromet...
متن کاملDelayed visual maturation.
Three infants, recognised as blind during the first 4 months of life, were found to be normal on neurological and ophthalmological examinations. Visual electro-diagnostic studies showed normal retinal responses, but delayed conduction velocities and impaired visually-evoked responses over the occipital cortex. After age 6 months, normal vision developed gradually and all abnormalities disappeared.
متن کاملAccelerated Development in the Visual Areas of Preterm Infants? a Voxel-Based Morphometry Study on Diffusion Tensor MR Imaging
M. Gimenez, M. J. Miranda, P. A. Born, Z. Nagy, T. Jernigan, E. Rostrup University of Barcelona, Barcelona, Spain, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Barcelona, Spain, Danish Research Centre for Magnetic Resonance, Copenhagen University Hospital, Copenhagen, Denmark, Karolinska Institute, Stockholm, Sweden, Laboratory of Cognitive Imaging (LOCI)...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Archives of disease in childhood
دوره 36 شماره
صفحات -
تاریخ انتشار 1961