We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Optical Imaging of the Visual Cortex: Spectral and Amplitude Characteristics of Vasomotor Oscillations.
- Authors
Kozhukhov, S. A.; Saltykov, K. A.; Bondar, I. V.
- Abstract
Intrinsic signal optical imaging is widely used in current studies of the functional anatomy of the cerebral cortex. However, the recorded optical signal, which correlates with neuronal activity, is masked by background activity, which can exceed the amplitude of the useful imaging signal by an order of magnitude. The signal contains spontaneous oscillations with frequencies in the range 0.01-0.15 Hz, called vasomotor oscillations, as one of the components of background activity. The studies reported here identified vasomotor oscillations in three areas of interest: nervous tissue, large arterioles, and the dura mater. Vasomotor oscillations in nervous tissue and blood vessels have different spectral and amplitude characteristics. Nonetheless, there is a high level of coherence between the oscillations recorded in these regions of interest. Consideration of these properties led us to the conclusion that the application of principal or independent components analysis will yield more accurate and detailed functional maps.
- Subjects
VISUAL cortex; CEREBRAL cortex anatomy; INTRINSIC optical imaging; OPTICAL images; INDEPENDENT component analysis
- Publication
Neuroscience & Behavioral Physiology, 2023, Vol 53, Issue 4, p609
- ISSN
0097-0549
- Publication type
Article
- DOI
10.1007/s11055-023-01459-9