Reference code: | PT/FB/BL-2008-042.04 |
Location: | Arquivo PCA - Pasta 9/2008
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Title:
| Infant olfactory event-related potentials
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Publication year: | 2008
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URL:
| http://www.uniklinikum-dresden.de/das-klinikum/kliniken-polikliniken-institute/hno/forschung/interdisziplinares-zentrum-fur-riechen-und-schmecken/neuigkeiten/kongresse/kongressarchiv/human-chemosensation-2010/abstracts/?searchterm=Sampaio
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Abstract/Results: | ABSTRACT:
OBJECTIVE:
The aim of this study was to identify electrophysiological responses of around one-month-old infants when presented with olfactory stimuli. These stimuli were offered in three different intensities and we looked for the appearance of olfactory event-related potentials (OERP) for each stimuli intensity.
BACKGROUND:
Since the birth, the neonate is able to respond with specific behaviors to different stimuli that surround him. She may cry when facing an aversive stimulus, shows aversion facial expressions when presented with odors that were previously considered as unpleasant and, likewise, is able to crawl to follow the mother´s breast odor. Behavioral preference signals, such as head turning, when a pleasant olfactory stimuli is presented, can also be observed. These evidences can demonstrate that the olfactory function develops from the first years of life and that at birth this function is already operational, producing behavioral and psychophysiological responses in the newborn.
METHOD:
Sixty-one newborns were recruited at the Obstetric and Pediatric services of Woman’s, Children’s and Adolescent’s Department of Hospital Pedro Hispano, in Matosinhos, Portugal. From the total recruited, thirteen appeared in the hospital and thirteen circa one-month old infants participated in the study. OERP’s were registered with a total of 12 caucasian newborns (6 female, 6 male) because, due to technical issues in the registry, the data for one infant was lost. The infants aged between 23 to 41 days. All infants were full-term with birth weight between 2620g to 4270g and normal Apgar score. To elicit OERP, monomodal chemosensory nasal stimulation was performed using an Olfactometer OM2s (Burghart Instruments, Wedel, Germany). This was achieved by embedding chemical stimuli of 200 ms duration in a constantly flowing air stream (5 l/min) applied to the nasal mucosa by an enteral feeding tube inserted approximately 5mm into the nostril beyond the nasal valve area and fixed to the nose with Mefix adhesive. For the olfactory stimulation Phenyl Ethyl Alcohol Rose-like Odor was used (PEA, 10 30 and 50% v/v; Sigma, Deisenhofen, Germany), offered in three different sequences.
RESULTS:
At the present moment, the data analysis is still an ongoing process and because of that there are no results to present. But, being such an ambitious project and using methodologies that are quite new with such young infants we can, however, conclude that collecting the data using the procedures reported above is a doable process and that it is possible to offer the olfactory stimuli the way we did.
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Accessibility: | Document does not exist in file
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Language:
| eng
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Author:
| Góis-Eanes, M.
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Secondary author(s):
| Cruz, S., Schuster, B., Gonçalves, O., Sampaio, A.
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Document type:
| Online abstract
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Number of reproductions:
| 1
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Reference:
| Góis-Eanes, M., Cruz, S., Schuster, B., Gonçalves, O., & Sampaio, A. (2010, December). Infant olfactory event-related potentials. Poster session presented at the Human Chemosensation 2010, Dresden, Germany. Abstract retrieved from http://www.uniklinikum-dresden.de/das-klinikum/kliniken-polikliniken-institute/hno/forschung/interdisziplinares-zentrum-fur-riechen-und-schmecken/neuigkeiten/kongresse/kongressarchiv/human-chemosensation-2010/abstracts/?searchterm=Sampaio
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Indexed document: | No
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Keywords: | Infant / Olfaction / Event-related potential (ERP)
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