1997
DOI: 10.1016/s0006-8993(96)01104-3
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Power spectral analysis of inspiratory nerve activity in the anesthetized rat: uncorrelated fast oscillations in different inspiratory nerves

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Cited by 12 publications
(10 citation statements)
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“…These investigations have revealed fast oscillations in inspiratory nerve activities in both anesthetized and decerebrate rats in vivo, with the power spectrum most often characterized by a single spectral peak in either the MFO or HFO range (dual spectral peaks were rarely encountered). Furthermore, the peak frequencies associated with HFO activity were reported to be slightly higher in adult rats than those previously observed in other mammals; based on these recent observa-tions, the upper limit of the original HFO range has been extended to ϳ160 Hz (Kocsis and Gyimesi-Pelczer 1997;Marchenko et al 2002). Because the mouse is rapidly becoming a valuable model for studying the contribution of genetic factors in respiratory control (see recent review by Tankersley 2003), and to our knowledge, spectral composition of inspiratory-related activity in adult mouse has not yet been evaluated, we conducted this study, in part, to investigate the presence and location of fast oscillatory rhythms in inspiratory motor discharges in adult mouse in vivo.…”
Section: Introductionmentioning
confidence: 70%
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“…These investigations have revealed fast oscillations in inspiratory nerve activities in both anesthetized and decerebrate rats in vivo, with the power spectrum most often characterized by a single spectral peak in either the MFO or HFO range (dual spectral peaks were rarely encountered). Furthermore, the peak frequencies associated with HFO activity were reported to be slightly higher in adult rats than those previously observed in other mammals; based on these recent observa-tions, the upper limit of the original HFO range has been extended to ϳ160 Hz (Kocsis and Gyimesi-Pelczer 1997;Marchenko et al 2002). Because the mouse is rapidly becoming a valuable model for studying the contribution of genetic factors in respiratory control (see recent review by Tankersley 2003), and to our knowledge, spectral composition of inspiratory-related activity in adult mouse has not yet been evaluated, we conducted this study, in part, to investigate the presence and location of fast oscillatory rhythms in inspiratory motor discharges in adult mouse in vivo.…”
Section: Introductionmentioning
confidence: 70%
“…In contrast to the dual peaks usually noted in adult cat and rabbit in vivo, in anesthetized and decerebrate adult rats, usually only a single peak located between 45 and 160 Hz is observed (Kocsis and GyimesiPelczer 1997;Marchenko et al 2002), and the designation of MFO or HFO is determined by coherence analysis. In a few cases, however, in the barbiturate-but not urethane-anesthetized adult rat (n ϭ 4/17) and in the decerebrate adult rat (n ϭ 4/16), dual peaks with the lower frequency peak seen between 35 and 78 Hz (MFO) and the higher frequency peak seen between 97 and 160 Hz (HFO) have been detected (Kocsis and Gyimesi-Pelczer 1997;Marchenko et al 2002); in these cases, relative power of the MFO and HFO peaks are usually similar. These observations have led to the suggestion that, in the adult in vivo rat, the frequency ranges associated with MFO and HFO activities may be shifted to higher frequencies (Kocsis and Gyimesi-Pelczer 1997;Marchenko et al 2002), which for the HFO may be a consequence of the high discharge frequencies (Ͼ200/s) observed in dorsal and ventral respiratory group neurons (Tian and Duffin 1998).…”
Section: Time-invariant Spectral Analyses: Comparison To Other Studiesmentioning
confidence: 99%
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“…In two other studies (23,24), autospectral and coherence analysis was applied to I nerve discharges in anesthetized rats. Autospectral frequency peaks, mainly in the range 20-40 Hz, were found, but significant coherence peaks at these or higher frequencies between different nerve activities were rare.…”
mentioning
confidence: 99%