|Reference code: ||PT/FB/BL-2008-042.03|
|Location: ||Arquivo PCA - Pasta 9/2008|
|Visual event-related potentials in healthy infants|
|Publication year: ||2012|
A large amount of research in the developmental domain has focused its attention in the newborns’ behavioral analysis. More recently, electrophysiological measures studies, such as ERPs studies, have been used to extend our knowledge about these behavioral data by learning the cerebral processes for normal as well as aberrant development (Karrer, 1998). Indeed, visual event
-related potentials (VERPs) studies with infants, at an early stage, have been proposed to be important markers in early diagnosis of sensorial deprivation (Benavente, Tamargo, Tajada, Yuste & Oliván, 2005). Studies comparing healthy newborns and newborns with different pathological diagnosis (i.e., perinatal asphyxia or intraventricular hemorrhage) showed that the VERPs components were different, namely that healthy infants presented more early components, such as N1, P2 and N3 (Kraemer, Abrahamsson & Sjostrom, 1999; Toru & Watanabe, 2006). Therefore, the objective of the present study is to understand and identify the VERPs components to different intensity visual stimuli in healthy infants.
Sixty-one newborns were recruited, thirteen families came to the hospital and thirteen infants were assessed. All infants were full-term, with birth weights ranging from 2620 to 4270g and had normal Apgar scores. The data for one baby was lost due to technical problems. VERP data for twelve caucasian infants with ages ranging from 23 to 41 days were recorded. Study objectives and procedures were described to parents and informed consent was obtained. When they arrived, the newborn was placed in their mother’s lap and the researcher offered white flashes holding the lamp of a Grass PS33-Plus (Astro-Med Inc.) flash stimulator, positioned at 20 cm distance from the infant and directed towards their eyes. The stimulus was offered in three different intensities. Data was recorded using a QuickAmp amplifier linked to a 32 channels ActiCap and Vision Recorder 1.10 Software (Brain Products, Brainvision Inc.).
RESULTS AND CONCLUSIONS:
All the infants showed visual evoked responses and isual ERPs components were identified. This knowledge can help professionals to make early diagnosis and adjust more direct and appropriate treatment plans for infants with sensorial processing difficulties.
|Accessibility: ||Document exists in file|
|Abstract and respective poster in attachment|
|Author: ||Góis-Eanes, M.|
|Secondary author(s): |
|Cruz, S., Schuster, B., Gonçalves, O., Sampaio, A.|
|Document type: |
|Góis-Eanes, M., Cruz, S., Schuster, B., Gonçalves, O., & Sampaio, A. (2012). Visual event-related potentials in healthy infants. Abstract book of the International Society of Behavioral Development 2012 Biennal Meeting (pp. 406-407). Alberta, Canada: ISSBD.|
|Indexed document: ||No|
|Keywords: ||Event-related potential (ERP) / Infant / Visual perception|