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Volume 37 #1

Contents

  1. Relationship of the magnetic compass and vision in birds: in search of a receptor cell
  2. What did adaptive optics give us for understanding the mechanisms of human color vision
  3. Magnetic Navigation of Animals, Contrast Sensitivity of Vision, and the Weber-Fechner Law
  4. Рeculiarities of control commands generation for oculographic interfaces under the conditions of vestibular impacts
  5. "Acoustic window” in the mandibular of dolphins: evaluation of the bone thickness"
  6. Changes in the spectral characteristics and the coherence of the rat olfactory bulb local field potentials under xylazine-tiletamine-zolazepam anesthesia
  7. Automatic evaluation of the internal parameters of the onboard camera of a spacecraft from video data of dockings with the iss

Changes in the spectral characteristics and the coherence of the rat olfactory bulb local field potentials under xylazine-tiletamine-zolazepam anesthesia

© 2023 V. N. Kiroy, VP. O. Kosenko, P. D. Shaposhnikov, A. I. Saevskiy, E. V. Aslanyan

Southern Federal University 334058 Stachki Avenue, Rostov-on-Don, Russia

Received 03 Jun 2022

Local field potentials (LFP) recorded in the olfactory bulb (OB) are known to be largely generated in local neural networks, are directly related to the processing of olfactory information, and are influenced by various factors, including anesthetics. Using 8-electrode arrays implanted in the dorsal regions of 6 adult male Norway rats OBs, the effects of xylazine-tiletamine-zolazepam (XTZ) anesthesia on the spectral characteristics and coherence of the LFP in the frequency range 1–150 Hz were studied in 2 hours long chronic experiments. It is shown that the most significant changes in the rat OB LFP under XTZ-anesthesia are observed in the high γ frequency band. A statistically significant increase in the power (2–4 times) and coherence (up to 50%) of this band was observed in the LFP of all animals within 10–15 minutes from the anesthesia onset. At the same time, during wakefulness, the dominant frequencies of this band were 70–80 Hz, and within 10–15 minutes from the anesthesia onset they increased to 110–130 Hz. During anesthesia, a gradual shift of these dominant frequencies to a lower range (90–110 Hz) was observed, while their total power, in contrast to the coherence, was statistically significantly reduced when the animal started recovering from anesthesia

Key words: olfactory bulb, local field potentials, gamma band, coherence, xylazine-tiletamine-zolazepam anesthesia

DOI: 10.31857/S0235009223010043  EDN: ATSRWQ

Cite: Kiroy V. N., VP. O. Kosenko, Shaposhnikov P. D., Saevskiy A. I., Aslanyan E. V. Izmenenie spektralnykh kharakteristik i urovnya kogerentnosti fokalnoi aktivnosti obonyatelnoi lukovitsy krysy v dinamike ksilazin-tiletaminzolazepamovogo narkoza [Changes in the spectral characteristics and the coherence of the rat olfactory bulb local field potentials under xylazine-tiletamine-zolazepam anesthesia]. Sensornye sistemy [Sensory systems]. 2023. V. 37(1). P. 65–77 (in Russian). doi: 10.31857/S0235009223010043

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