Search Results
Results 251 - 300 of 1078
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Ricci D - - 2007
The aim of this study was to assess various aspects of visual function in children with single-suture, non-syndromic craniosynostosis. Thirty-eight infants (28 males, 10 females; age range 3.5-13mo, mean age 7mo, 11 with plagiocephaly, 12 with trigonocephaly, and 15 with scaphocephaly), were assessed with a battery of tests specifically designed ...
McCleery Joseph P - - 2007
A wealth of data has documented impairments in face processing in individuals with autism spectrum disorders (ASD). Recently, the suggestion has been made that these impairments may arise from abnormal development of a subcortical system involved in face processing that originates in the magnocellular pathway of the primate visual system. ...
Wakai R T - - 2007
To follow the development of the auditory evoked on- and off-responses in early infancy. The subjects were healthy infants, studied at conceptional age (CA) 39-66 weeks. Serial auditory evoked responses (AERs) were recorded in 17 subjects in response to tones of frequency 1.5 kHz and duration 1.0 s in order ...
Sann Coralie - - 2007
The present research investigates newborn infants' perceptions of the shape and texture of objects through studies of the bi-directionality of cross-modal transfer between vision and touch. Using an intersensory procedure, four experiments were performed in newborns to study their ability to transfer shape and texture information from vision to touch ...
Reddy Vasudevi - - 2007
We used a double video Live-Replay-Live procedure to explore self-self interactions in fourteen 9-week-old infants, repeated at 13-weeks with 10 of these infants. Using multiple measures of behavioural response we found that (1) in all cases where age effects held, duration of response was greater at 9- than at 13-weeks, ...
Eilander A - - 2007
The present paper evaluates the most recent randomized controlled trials assessing the efficacy of n-3 LCPUFA supplementation (with or without n-6 LCPUFA) during pregnancy, lactation, infancy and childhood on visual and cognitive development. Available evidence suggests a beneficial effect of maternal n-3 LCPUFA supplementation during pregnancy and lactation on cognitive ...
Needelman Howard - - 2007
The authors report the natural history of closure of the cavum Septi pellucidi in premature infants 26 to 27 weeks postconception at birth and compare the developmental outcome in these infants who had closure by 42 weeks postconception to those who still had a cavum septum pellucidi visualized on ultrasound ...
Amin Sanjiv B - - 2007
Our goal was to determine if multiple courses of antenatal betamethasone affect auditory neural maturation in 28 to 32 weeks' gestational age infants. A retrospective cohort study was performed to compare auditory neural maturation between premature infants exposed to 1 course of betamethasone and infants exposed to > or = ...
Sotomi O - - 2007
Best medical evidence indicates that surgical treatment of significant congenital cataracts is required within the first 3 months of life for optimal visual outcome. The aim of the present study was to review when the diagnosis of congenital cataracts was made in our region, by whom it was made, and ...
Brown Angela M - - 2007
PURPOSE: To determine what critical immaturity is responsible for the poor binocular stereopsis of human infants. METHODS: Infant and adult psychometric functions were measured for detection of stereoscopic depth in a random-texture display. A test stimulus defined by horizontal binocular disparity and a distracter stimulus defined by vertical disparity were ...
Sodian Beate - - 2007
Twelve- and 14-month-old infants' ability to represent another person's visual perspective (Level-1 visual perspective taking) was studied in a looking-time paradigm. Fourteen-month-olds looked longer at a person reaching for and grasping a new object when the old goal-object was visible than when it was invisible to the person (but visible ...
McDonald Craig G - - 2007
OBJECTIVE: To characterize the morphology of flash visual evoked potentials (fVEPs) obtained from infants hospitalized with severe, chronic malnutrition (marasmus). METHODS: A covariance-based principal component analysis with Promax factor rotation was applied to fVEPs obtained from malnourished infants and age-matched control subjects. RESULTS: The analysis suggests the presence of a ...
Tondel Grazyna M - - 2007
A young infant's environment routinely consists of moving objects. The dynamics of the infant accommodative system are almost unknown and yet have a large impact on habitual retinal image quality and visual experience. The goal of this study was to record infants' dynamic accommodative responses to stimuli moving at a ...
Atkinson Janette J Visual Development Unit, University College London, London, United Kingdom. - - 2007
To report on two population screening programs designed to detect significant refractive errors in 8308 8- to 9-month-old infants, examine the sequelae of infant hyperopia, and test whether early partial spectacle correction improved visual outcome (strabismus and acuity). The second program also examined whether infant hyperopia was associated with developmental ...
Slaughter Virginia - - 2007
One hundred and one published articles that used visual habituation or violation-of-expectation techniques with infants of 12 months or younger were surveyed. Information was compiled on the number of infants who failed to complete experimental procedures due to "fussiness" or other factors. Also noted for each experiment was whether or ...
Zeng ShaoJu - - 2007
The distribution of Met-enkephalin (ENK), substance P (SP) and serotonin (5-HT) differs between the core and shell regions of the mesencephalic and diencephalic auditory nuclei of the turtle [Belekhova et al., 2002]. These neurochemical distinctions are also found in other tetrapods (mammals, birds and amphibians). The distribution of ENK, SP ...
Hunnius Sabine - - 2007
Looking behavior plays a crucial role in the daily life of an infant and forms the basis for cognitive and social development. The infant's visual attentional systems undergo rapid development during the first few months of life. During the last decennia, the study of visual attentional development in infants has ...
Hammarrenger Benoit - - 2007
This study investigated the effect of very preterm birth (gestation < or =30wks) and very low birth weight (< or =1500g) on the development of magnocellular and parvocellular visual processing streams. Participants were preterm infants (n=55: 31 females, 24 males) born between 24 and 30 weeks'gestation (mean 27.4wks [SD 1.3]), ...
Flom Ross R Department of Psychology, Brigham Young University, Provo, UT 84602, USA. - - 2007
This research examined the developmental course of infants' ability to perceive affect in bimodal (audiovisual) and unimodal (auditory and visual) displays of a woman speaking. According to the intersensory redundancy hypothesis (L. E. Bahrick, R. Lickliter, & R. Flom, 2004), detection of amodal properties is facilitated in multimodal stimulation and ...
Kayed Nanna Sønnichsen - - 2007
Blinking is a good indication of awareness to optical collisions in early infancy. In the current longitudinal study, infants were presented with the image of a looming virtual object approaching on a collision course under different constant velocities and constant accelerations. The aim was to investigate which timing strategies the ...
Cottin F - - 2006
The purpose of this study was to implement a new method for assessing the ventilatory thresholds from heart rate variability (HRV) analysis. ECG, VO2, VCO2, and VE were collected from eleven well-trained subjects during an incremental exhaustive test performed on a cycle ergometer. The "Short-Term Fourier Transform" analysis was applied ...
Ricci Daniela - - 2007
The aim of this study was to assess visual function in 13 infants with evidence of prenatal post haemorrhagic ventricular dilatation. Infants were assessed at 5, 12 and 24 months using a battery of tests specifically designed to assess various aspects of visual function in infancy. Visual findings were correlated ...
Zemach Iris - - 2007
Infants show spontaneous looking preferences among isoluminant chromatic stimuli [Adams, R. J. (1987). An evaluation of color preferences in early infancy. Infant Behavior and Development, 10, 143-150; Bornstein, M. H. (1975). Qualities of color vision in infancy. Journal of Experimental Social Psychology, 19 (3), 401-419.]. These differences in preference have ...
Arditi Hadar - - 2006
In two experiments we examined the effects of human contact and vagal regulation on newborns' pain reactivity and visual attention. Baseline cardiac vagal tone was measured during quiet sleep and during the experiment, and vagal withdrawal was indexed as change in vagal tone from baseline to pain (study 1) or ...
Valenza Eloisa - - 2006
Despite decades of studies of human infants, a still open question concerns the role of visual experience in the development of the ability to perceive complete shapes over partial occlusion. Previous studies show that newborns fail to manifest this ability, either because they lack the visual experience required for perceptual ...
Blaga Otilia M - - 2006
Young infants have repeatedly been shown to be slower than older infants to shift fixation from a midline stimulus to a peripheral stimulus. This is generally thought to reflect maturation of the neural substrates that mediate the disengagement of attention, but this developmental difference may also be attributable to young ...
Laucht Manfred - - 2006
BACKGROUND: The present study was designed to investigate the association between visual exploratory behaviour in early infancy, novelty seeking in adolescence, and the dopamine D4 receptor (DRD4) genotype. METHODS: Visual attention was measured in 232 three-month-old infants (114 males, 118 females) from a prospective longitudinal study using a habituation-dishabituation paradigm. ...
Kato Toru - - 2006
We reviewed studies on the predictive value of visual evoked potentials (VEPs) in the newborn. VEPs demonstrated a good correlation with neurodevelopmental outcome in full-term infants with birth asphyxia. However, their prognostic value in preterm infants is controversial. In preterm infants, most studies showed high specificities for neurodevelopmental outcome, but ...
Bortfeld Heather - - 2007
Sensitivity to spoken language is an integral part of infants' formative development, yet relatively little is known about the neural mechanisms that underlie the emerging ability to perceive and process speech. This is in large part because there are a limited number of non-invasive techniques available to measure brain functioning ...
Vesper Stephen J - - 2007
The results of a traditional visual mold inspection were compared to a mold evaluation based on the Relative Moldiness Index (RMI). The RMI is calculated from mold-specific quantitative PCR (MSQPCR) measurements of the concentration of 36 species of molds in floor dust samples. These two prospective mold evaluations were used ...
Guzzetta A - - 2006
Psychological tests based on visual information processing have shown to be promising in predicting neurodevelopmental outcome in infants at risk. In the present study we prospectively investigated the early development in a group of 20 high-risk preterm infants by means of i) the Fagan Test of Infant Intelligence at 7, ...
Fellman Vineta - - 2006
The possibility of recording changes in electroencephalography potentials following perception of sound was reported several decades ago. The recent expanding research on auditory cortical event-related potentials (AERPs) for assessing sound discrimination abilities in children and infants has indicated that several methodological issues need to be addressed before it can be ...
Kaldy Zsuzsa - - 2006
We report a new method for calibrating differences in perceptual salience across feature dimensions, in infants. The problem of inter-dimensional salience arises in many areas of infant studies, but a general method for addressing the problem has not previously been described. Our method is based on a preferential looking paradigm, ...
Neil Patricia A - - 2006
Previous studies have shown that adults respond faster and more reliably to bimodal compared to unimodal localization cues. The current study investigated for the first time the development of audiovisual (A-V) integration in spatial localization behavior in infants between 1 and 10 months of age. We observed infants' head and ...
Oakes Lisa M - - 2006
The binding of object identity (color) and location in visual short-term memory (VSTM) was examined in 6.5- to 12.5-month-old infants (N= 144). Although we previously found that by age 6.5 months, infants can represent both color and location in VSTM, in the present study we observed that 6.5-month-old infants could ...
Mirabella Giuseppe - - 2006
Extremely preterm infants are at risk for neurodevelopmental problems and the visual system is particularly vulnerable. However, development of visual function in preterm infants with little or no retinal or neurologic injury has not been well defined. This study compared development of visual function in preterm infants without severe retinopathy ...
Garbutt Siobhan - - 2006
Saccadic eye movements are essential for redirecting the fovea at different visual targets. In adults and children saccades are remarkably stereotyped. Peak velocity and duration of saccades are a simple function of saccade amplitude called the 'main sequence'. Saccades that are substantially slower than normal often reflect disease of the ...
Jiang Ze D - - 2006
CONCLUSION: Peripheral auditory threshold does not correlate with brainstem auditory function in preterm infants. Infants with peripheral auditory abnormality seem not to be necessarily more prone to brainstem auditory abnormality than those without the elevation, although further studies are needed in a larger number of subjects. OBJECTIVE: To investigate whether ...
Calandruccio Lauren - - 2006
Multifrequency tympanometry data were measured multiple times between the ages of four weeks and two years from 33 infants/toddlers. Tympanograms were also measured from 33 adult participants. Tympanograms recorded with five probe-tone frequencies (226, 400, 630, 800, and 1000 Hz) were classified using the Vanhuyse et al model classification system ...
Leibold Lori J - - 2006
The effect of masker-frequency variability on the detection performance of 7-9 month-old infants and adults was examined. Listeners detected a 300-ms 1000-Hz pure tone masked by: (1) A random-frequency two-tone complex; (2) a fixed-frequency two-tone complex; or (3) a broadband noise. Maskers repeated at 300-ms intervals throughout testing at 60 ...
Blade Pamela J - - 2006
Eccentric photorefraction provides an opportunity to gather rapid and remote estimates of refraction and gaze position from infants. The technique has the potential for extensive use in vision screenings and studies of visual development. The goal of this study was to assess the refraction calibration of the PowerRefractor (Multichannel Systems) ...
Wensveen Janice M - - 2006
To characterize how the mechanisms that produce unilateral form-deprivation amblyopia integrate the effects of normal and abnormal vision over time, the effects of brief daily periods of unrestricted vision on the spatial vision losses produced by monocular form deprivation were investigated in infant monkeys. Beginning at 3 weeks of age, ...
Cheatham Carol L CL University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS 66160, - - 2006
Several randomized clinical studies in infants born preterm and at term have explored the effects on visual acuity development of postnatal supplementation with various sources of docosahexaenoic acid (DHA). Higher visual acuity after DHA supplementation is a consistent finding in infants born preterm. For infants born at term, the results ...
Kotsoni Eleni E University of London, - - 2006
Common-onset visual masking (COVM) occurs when a mask and a target have common onset but delayed offset, with the mask persisting beyond the duration of the target [Di Lollo, V., Enns, J. T., & Rensink, R. A. Competition for consciousness among visual events: The psychophysics of reentrant visual events. Journal ...
Jiang Ze D - - 2006
We recorded serially brainstem auditory evoked response (BAER) during the neonatal period in term infants who suffered perinatal asphyxia. The amplitudes of BAER components was analysed at 40 dB above BAER threshold of each subject who had a threshold<or=25 dB nHL. No apparent changes in the amplitudes of waves I ...
Courage Mary L - - 2006
To examine the development of look duration as a function of age and stimulus type, 14- to 52-week-old infants were shown static and dynamic versions of faces, Sesame Street material, and achromatic patterns for 20 s of accumulated looking. Heart rate was recorded during looking and parsed into stimulus orienting, ...
Drover James R - - 2006
PURPOSE: We assessed the retest variability of a new contrast sensitivity (CS) card procedure and its ability to predict spatial resolution. METHODS: Twenty-four 3-month-olds were tested twice with the CS cards and once with the Teller acuity cards (TAC) within a single session. RESULTS: Coefficient of repeatability (COR) analysis revealed ...
Adler Scott A - - 2006
Visual search studies with adults have shown that stimuli that contain a unique perceptual feature pop out from dissimilar distractors and are unaffected by the number of distractors. Studies with very young infants have suggested that they too might exhibit pop-out. However, infant studies have used paradigms in which pop-out ...
Ricci Daniela D Paediatric Neurology Unit, Catholic University, Rome, - - 2006
The aim of this retrospective study was to establish the presence and severity of cerebral visual impairment in preterm infants with PVL. We also wished to establish whether abnormalities of visual function are related to brain MRI findings and more specifically not only to the involvement of optic radiations and ...
Johnson T Mark - - 2006
PURPOSE: To examine the feasibility of the use of a flexible intraocular rake to remove epiretinal membranes (ERM). DESIGN: Interventional case series. METHODS: A multi-tine flexible intraocular rake was designed. Ten consecutive patients with idiopathic epiretinal membranes underwent vitrectomy and removal of the ERM with the intraocular rake. Outcome measures ...
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