Pattern ERG and VEP maturation in schoolchildren

Brecelj, Jelka; Štrucl, Martin; Zidar, Ignac; Tekavčič-Pompe, Manca

doi:10.1016/s1388-2457(02)00254-7

Cited by 53 publications

(40 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…3), along with higher amplitudes and a shift of the P100 peak for children. A decrease in the amplitudes of VEP with age has been repeatedly described using different kinds of visual stimuli (Allison et al, 1984;Brecelj et al, 2002;Hoffmann et al, 2001;Holcomb, Coffey and Neville, 1992;Mahajan and McArtur, 2012;Taylor et al, 2004). Larger amplitudes in children have been attributed to less thick skulls or to generators being closer to the surface electrode in smaller brains (Chauveau et al, 2004;Picton and Taylor, 2007).…”

Section: P1-n1 Range: Pre-linguistic Processesmentioning

confidence: 90%

Functional and time-course changes in single word production from childhood to adulthood

et al. 2015

View full text Add to dashboard Cite

Picture naming tasks are widely used both in children and adults to investigate language production for research and for assessment purposes. The main theoretical models of single word production based on the investigation of picture naming in adults provide a detailed account of the principal mental operations involved in the transformation of an abstract concept into articulated speech and their temporal dynamics. These models and in particular their time-course do not apply directly to children who display much longer production latencies than adults. Here we investigate the functional processes and the temporal dynamics of word encoding in school-age children and adults. ERPs were analysed from picture onset to the onset of articulation in 32 children and 32 adults performing the same overt picture naming task. Waveform analyses were not informative since differences appeared throughout the entire period, due to an early shift of waveform morphology and to larger amplitudes in children. However, when the sequences of periods of topographic stability were considered, different patterns of electric fields at scalp only appeared in approximately the first third of the analysed period, corresponding to the P1-N1 complex. From about 200 ms in adults and from 300 ms in children to articulation onset similar patterns of global topography were observed across groups but with a different time distribution. These results indicate qualitative changes in an early time-window, likely corresponding to pre-linguistic processes, and only quantitative changes in later time-windows, suggesting similar mental operations underlying lexical processes between age-school children and adults, with temporal dynamic changes during development.

show abstract

Section: P1-n1 Range: Pre-linguistic Processesmentioning

confidence: 90%

Functional and time-course changes in single word production from childhood to adulthood

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Of these, first three waves N1, P1 and N2 (NPN) complex is important clinically (8). The pattern of VEPs and magnetoencephalographic studies have shown that waves N1 and P1 are mainly generated in the striate, whereas wave N2 is generated in the extrastriate visual cortex (13,14) and hence reflects functional integrated visual pathway from retina to occipital striate area. Studies show that human vision is sensitive to hypoxia.…”

Section: Discussionmentioning

confidence: 99%

Visual Evoked Potential Changes in Chronic Obstructive Pulmonary Disease

et al. 2007

View full text Add to dashboard Cite

“…However, although not common practice, half-field pVEPs have been used in paediatric populations to investigate visual pathway function and dysfunction [8,17,18]. In these cases, half-field testing as an adjunct to full-field stimulation has been shown to be extremely valuable.…”

Section: Introductionmentioning

confidence: 99%

When do asymmetrical full-field pattern reversal visual evoked potentials indicate visual pathway dysfunction in children?

et al. 2010

View full text Add to dashboard Cite

Our study aimed to find out the association between full-field pattern reversal visual evoked potential (pVEP) transoccipital asymmetries and half-field pVEP transoccipital distributions in children. Over a six-month period, 46 patients (mean age: 9 years 9 months) had both monocular full-field and half-field pVEPs to test checks subtending 50 min of arc in a 35 degree full-field and 0-17.5 degree lateral half-field. Silver-silver chloride electrodes placed at Oz, O1 and O2 were referred to Fz. Monocular full-field data were categorised according to the degree of transoccipital asymmetry. Half-field data were measured and summated to see whether they explained any full-field asymmetry. In this cohort of 46 patients, eight (17%) patients had symmetrically distributed monocular full-field pVEPs for each eye. Four of these patients had normal half-field pVEP distributions for each eye, but the other four showed a half-field deficit in one or both eyes. Of the 38 patients with asymmetrically distributed full-field pVEPs in at least one eye, 17 (44%) patients showed a half-field deficit, 20 (53%) showed responsive, but symmetrically distributed half-field responses, and one patient (3%) showed typical half-field distributions. Half-field pVEPs can help explain full-field asymmetries and should be attempted in any child able to co-operate with testing and in whom visual pathway dysfunction is suspected.

show abstract

Pattern ERG and VEP maturation in schoolchildren

Cited by 53 publications

References 37 publications

Functional and time-course changes in single word production from childhood to adulthood

Functional and time-course changes in single word production from childhood to adulthood

Visual Evoked Potential Changes in Chronic Obstructive Pulmonary Disease

When do asymmetrical full-field pattern reversal visual evoked potentials indicate visual pathway dysfunction in children?

Contact Info

Product

Resources

About