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. 2017 Dec 22;11:730. doi: 10.3389/fnins.2017.00730

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Copyright © 2017 Barman and Yates.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Cardiac-related and respiratory activity recorded from two branches of the left stellate ganglion in a barbiturate-anesthetized, paralyzed, and artificially-ventilated cat. (A) Traces (top to bottom) show the arterial pressure (AP), cardiac nerve activity (CNA), vertebral nerve activity (VNA), integrated phrenic nerve activity (PNA), and time base (1 s/division). The capacity-coupled preamplifier bandpass setting was 30–3,000 Hz (CNA, VNA) or 10–1,000 Hz (PNA). Signals were passed through a 50/60 Hz noise eliminator (Hum Bug; Quest Scientific) and a moving averager (CWE, Model MA-821RSP) with a 50-ms (CNA, VNA) or 100-ms (PNA) time constant. (B) Autospectra (left) and coherence functions (right) for these signals. Spectra are based on 35 20-s windows with 50% overlap, and they have a frequency resolution of 0.05 Hz per bin. Data showing cardiac- and respiratory-related rhythms appear in CNA and VNA have been published (Barman and Kenney, 2007; Barman, 2016); this figure has been created de novo but does not contain any original data.