Near-infrared spectroscopic imaging of stimulus-related hemodynamic responses on the neonatal auditory cortices.
(2005) Optical tomography and spectroscopy of tissue VI, 2005 5693. p.388-395- Abstract
- We have used near-infrared spectroscopy (NIRS) to study hemodynamic auditory evoked responses on 7 full-term neonates. Measurements were done simultaneously above both auditory cortices to study the distribution of speech and music processing between hemispheres using a 16-channel frequency-domain instrument. The stimulation consisted of 5-second samples of music and speech with a 25-second silent interval. In response to stimulation, a significant increase in the concentration of oxygenated hemoglobin ([HbO2]) was detected in 6 out of 7 subjects. The strongest responses in [HbO2] were seen near the measurement location above the ear on both hemispheres. The mean latency of the maximum responses was 9.42±1.51 s. On the left hemisphere... (More)
- We have used near-infrared spectroscopy (NIRS) to study hemodynamic auditory evoked responses on 7 full-term neonates. Measurements were done simultaneously above both auditory cortices to study the distribution of speech and music processing between hemispheres using a 16-channel frequency-domain instrument. The stimulation consisted of 5-second samples of music and speech with a 25-second silent interval. In response to stimulation, a significant increase in the concentration of oxygenated hemoglobin ([HbO2]) was detected in 6 out of 7 subjects. The strongest responses in [HbO2] were seen near the measurement location above the ear on both hemispheres. The mean latency of the maximum responses was 9.42±1.51 s. On the left hemisphere (LH), the maximum amplitude of the average [HbO2] response to the music stimuli was 0.76± 0.38 μ M (mean±std.) and to the speech stimuli 1.00± 0.45 μ± μM. On the right hemisphere (RH), the maximum amplitude of the average [HbO2] response was 1.29± 0.85 μM to the music stimuli and 1.23± 0.93 μM to the speech stimuli. The results indicate that auditory information is processed on both auditory cortices, but LH is more concentrated to process speech than music information. No significant differences in the locations and the latencies of the maximum responses relative to the stimulus type were found. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1133412
- author
- organization
- publishing date
- 2005
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Optical tomography and spectroscopy of tissue VI
- volume
- 5693
- pages
- 8 pages
- publisher
- SPIE
- conference name
- Optical tomography and spectroscopy of tissue VI, 2005
- conference location
- San Jose, California, United States
- conference dates
- 2005-01-23 - 2005-01-26
- external identifiers
-
- scopus:23244460188
- ISSN
- 1996-756X
- 0277-786X
- ISBN
- 9780819456670
- DOI
- 10.1117/12.590180
- language
- English
- LU publication?
- yes
- id
- 73b01d6c-93ab-4bf2-828b-fbca4eb21d32 (old id 1133412)
- date added to LUP
- 2016-04-01 11:33:22
- date last changed
- 2024-05-06 08:57:09
@inproceedings{73b01d6c-93ab-4bf2-828b-fbca4eb21d32, abstract = {{We have used near-infrared spectroscopy (NIRS) to study hemodynamic auditory evoked responses on 7 full-term neonates. Measurements were done simultaneously above both auditory cortices to study the distribution of speech and music processing between hemispheres using a 16-channel frequency-domain instrument. The stimulation consisted of 5-second samples of music and speech with a 25-second silent interval. In response to stimulation, a significant increase in the concentration of oxygenated hemoglobin ([HbO2]) was detected in 6 out of 7 subjects. The strongest responses in [HbO2] were seen near the measurement location above the ear on both hemispheres. The mean latency of the maximum responses was 9.42±1.51 s. On the left hemisphere (LH), the maximum amplitude of the average [HbO2] response to the music stimuli was 0.76± 0.38 μ M (mean±std.) and to the speech stimuli 1.00± 0.45 μ± μM. On the right hemisphere (RH), the maximum amplitude of the average [HbO2] response was 1.29± 0.85 μM to the music stimuli and 1.23± 0.93 μM to the speech stimuli. The results indicate that auditory information is processed on both auditory cortices, but LH is more concentrated to process speech than music information. No significant differences in the locations and the latencies of the maximum responses relative to the stimulus type were found.}}, author = {{Kotilahti, K and Nissilä, I and Mäkelä, R and Noponen, T and Lipiäinen, L and Gavrielides, N and Kajava, T and Huotilainen, M and Fellman, Vineta and Meriläinen, P and Katila, T}}, booktitle = {{Optical tomography and spectroscopy of tissue VI}}, isbn = {{9780819456670}}, issn = {{1996-756X}}, language = {{eng}}, pages = {{388--395}}, publisher = {{SPIE}}, title = {{Near-infrared spectroscopic imaging of stimulus-related hemodynamic responses on the neonatal auditory cortices.}}, url = {{http://dx.doi.org/10.1117/12.590180}}, doi = {{10.1117/12.590180}}, volume = {{5693}}, year = {{2005}}, }