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Auditory hemodynami...
Auditory hemodynamic studies of newborn infants using near-infrared spectroscopic imaging
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Nissila, I (author)
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Kotilahti, K (author)
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Huotilainen, M (author)
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Makela, R (author)
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Lipiainen, L (author)
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Noponen, T (author)
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Gavrielides, N (author)
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Naatanen, R (author)
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- Fellman, Vineta (author)
- Lund University,Lunds universitet,Pediatrik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Paediatrics (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine
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Katila, T (author)
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(creator_code:org_t)
- 2004
- 2004
- English.
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In: IEEE Engineering in Medicine and Biology Society. Conference Proceedings. - 1557-170X. ; 2, s. 1244-1274
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
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- The noninvasive study of tissue blood volume and oxygenation using near-infrared light is a new and actively developing technology. We have used near-infrared spectroscopic imaging (NIRSI) to study hemodynamic responses on the auditory cortices evoked by auditory stimulation. Ten healthy newborn infants were studied. The otoacoustic emission hearing test was performed for each infant. Pulse oximetry was used to monitor the heart rate during the measurement, video recording was used to monitor motion artifacts, and the eye movements were noted in order to determine sleep stage. A 16-channel frequency-domain optical imaging system developed in our laboratory was used for NIRSI measurements. The stimuli were presented in trains of seven 1 kHz beeps with 700-ms inter-stimulus intervals. The stimulus trains were separated by 25-s silent periods in order to allow for the hemodynamic delay. In 3/8 cases, we obtained a clear bilateral increase in [HbO/sub 2/], and in two additional cases, a clear response on one hemisphere. The mean change in [HbO/sub 2/] was +0.9+/-0.9muM and the mean change in [Hb] was -0.3+/-0.4muM for those channels producing the largest response for each subject. No statistically significant response was found in 3/8 cases.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Pediatrik (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Pediatrics (hsv//eng)
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- art (subject category)
- ref (subject category)
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- By the author/editor
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Nissila, I
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Kotilahti, K
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Huotilainen, M
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Makela, R
-
Lipiainen, L
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Noponen, T
-
show more...
-
Gavrielides, N
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Naatanen, R
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Fellman, Vineta
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Katila, T
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show less...
- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Clinical Medicin ...
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and Pediatrics
- Articles in the publication
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IEEE Engineering ...
- By the university
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Lund University