Flavoprotein Autofluorescence Imaging of Visual System Activity in Zebra Finches and Mice

Michael N, Bischof H-J, Loewel S (2014)
PLoS ONE 9(1): e85225.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Michael, Neethu; Bischof, Hans-JoachimUniBi; Loewel, Siegrid
Abstract / Bemerkung
Large-scale brain activity patterns can be visualized by optical imaging of intrinsic signals (OIS) based on activity-dependent changes in the blood oxygenation level. Another method, flavoprotein autofluorescence imaging (AFI), exploits the mitochondrial flavoprotein autofluorescence, which is enhanced during neuronal activity. In birds, topographic mapping of visual space has been shown in the visual wulst, the avian homologue of the mammalian visual cortex by using OIS. We here applied the AFI method to visualize topographic maps in the visual wulst because with OIS, which depends on blood flow changes, blood vessel artifacts often obscure brain activity maps. We then compared both techniques quantitatively in zebra finches and in C57Bl/6J mice using the same setup and stimulation conditions. In addition to experiments with craniotomized animals, we also examined mice with intact skull (in zebra finches, intact skull imaging is not feasible probably due to the skull construction). In craniotomized animals, retinotopic maps were obtained by both methods in both species. Using AFI, artifacts caused by blood vessels were generally reduced, the magnitude of neuronal activity significantly higher and the retinotopic map quality better than that obtained by OIS in both zebra finches and mice. In contrast, our measurements in non-craniotomized mice did not reveal any quantitative differences between the two methods. Our results thus suggest that AFI is the method of choice for investigations of visual processing in zebra finches. In mice, however, if researchers decide to use the advantages of imaging through the intact skull, they will not be able to exploit the higher signals obtainable by the AFI-method.
Erscheinungsjahr
2014
Zeitschriftentitel
PLoS ONE
Band
9
Ausgabe
1
Art.-Nr.
e85225
ISSN
1932-6203
eISSN
1932-6203
Page URI
https://pub.uni-bielefeld.de/record/2656790

Zitieren

Michael N, Bischof H-J, Loewel S. Flavoprotein Autofluorescence Imaging of Visual System Activity in Zebra Finches and Mice. PLoS ONE. 2014;9(1): e85225.
Michael, N., Bischof, H. - J., & Loewel, S. (2014). Flavoprotein Autofluorescence Imaging of Visual System Activity in Zebra Finches and Mice. PLoS ONE, 9(1), e85225. doi:10.1371/journal.pone.0085225
Michael, N., Bischof, H. - J., and Loewel, S. (2014). Flavoprotein Autofluorescence Imaging of Visual System Activity in Zebra Finches and Mice. PLoS ONE 9:e85225.
Michael, N., Bischof, H.-J., & Loewel, S., 2014. Flavoprotein Autofluorescence Imaging of Visual System Activity in Zebra Finches and Mice. PLoS ONE, 9(1): e85225.
N. Michael, H.-J. Bischof, and S. Loewel, “Flavoprotein Autofluorescence Imaging of Visual System Activity in Zebra Finches and Mice”, PLoS ONE, vol. 9, 2014, : e85225.
Michael, N., Bischof, H.-J., Loewel, S.: Flavoprotein Autofluorescence Imaging of Visual System Activity in Zebra Finches and Mice. PLoS ONE. 9, : e85225 (2014).
Michael, Neethu, Bischof, Hans-Joachim, and Loewel, Siegrid. “Flavoprotein Autofluorescence Imaging of Visual System Activity in Zebra Finches and Mice”. PLoS ONE 9.1 (2014): e85225.

5 Zitationen in Europe PMC

Daten bereitgestellt von Europe PubMed Central.

Multiple Visual Field Representations in the Visual Wulst of a Laterally Eyed Bird, the Zebra Finch (Taeniopygia guttata).
Bischof HJ, Eckmeier D, Keary N, Löwel S, Mayer U, Michael N., PLoS One 11(5), 2016
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