Simultaneous fMRI and fast-scan cyclic voltammetry bridges evoked oxygen and neurotransmitter dynamics across spatiotemporal scales
| Autor: | Matthew D. Verber, R. Mark Wightman, Yen-Yu Ian Shih, Lindsay R. Walton, Tzu-Hao Harry Chao, Sung-Ho Lee |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Male
Haemodynamic response Cognitive Neuroscience Dopamine Fast-scan cyclic voltammetry chemistry.chemical_element Abbreviations: FSCV fast-scan cyclic voltammetry Neuroimaging Neurosciences. Biological psychiatry. Neuropsychiatry Neurotransmission Synaptic Transmission Oxygen Article chemistry.chemical_compound Neurochemical medicine Animals BOLD fMRI Neurotransmitter Neurotransmitter Agents Hemodynamic response function Brain Electrochemical Techniques Magnetic Resonance Imaging Rats Neurology chemistry Voltammetry Neuroscience Neurovascular coupling medicine.drug RC321-571 |
| Zdroj: | NeuroImage, Vol 244, Iss, Pp 118634-(2021) NeuroImage |
| ISSN: | 1095-9572 |
| Popis: | The vascular contributions of neurotransmitters to the hemodynamic response are gaining more attention in neuroimaging studies, as many neurotransmitters are vasomodulatory. To date, well-established electrochemical techniques that detect neurotransmission in high magnetic field environments are limited. Here, we propose an experimental setting enabling simultaneous fast-scan cyclic voltammetry (FSCV) and blood oxygenation level-dependent functional magnetic imaging (BOLD fMRI) to measure both local tissue oxygen and dopamine responses, and global BOLD changes, respectively. By using MR-compatible materials and the proposed data acquisition schemes, FSCV detected physiological analyte concentrations with high temporal resolution and spatial specificity inside of a 9.4 T MRI bore. We found that tissue oxygen and BOLD correlate strongly, and brain regions that encode dopamine amplitude differences can be identified via modeling simultaneously acquired dopamine FSCV and BOLD fMRI time-courses. This technique provides complementary neurochemical and hemodynamic information and expands the scope of studying the influence of local neurotransmitter release over the entire brain. |
| Databáze: | OpenAIRE |
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