Synchronized fast rhythms in inspiratory and expiratory nerve discharges during fictive vocalization.
Synchronized fast rhythms in inspiratory and expiratory nerve discharges during fictive vocalization.
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虚构发声期间吸气和呼气神经放电的同步快节奏。
DOI：
10.1152/jn.2000.83.3.1415
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Cohen,MI
中科院分区：
文献类型：
--
作者：
Nakazawa,K;Granata,AR;Cohen,MI
在去丘前脑和麻痹猫中，记录到假发声（FV）时的呼吸神经活动，其特征是：吸气（I）和呼气（E）相持续时间缩短;膈神经活动显著增加，喉返（RL）和上级喉（SL）I活动中度改变;（ABD;腰椎）E活动。FV是由电刺激中脑导水管周围灰质（PAG）或其在脑桥腹外侧（VLP）的假定下行通路（100 Hz）产生的。频谱分析和相关分析揭示了三种类型的影响快节奏在FV。1）I活动：在控制状态下，膈神经和RL放电中的I（I-HFO，60-90 Hz）的相干高频振荡没有发生质的变化，但功率增加，频率适度增加（4-10 Hz）。E期RL和SL活动：在募集放电中，出现明显的内在节律（50-70 Hz的E-HFO相干），有时出现明显的相对较强的刺激锁定节律; 3）E期ABD活动：这种募集活动没有内在节律，但具有与刺激频率锁定的诱发振荡。因此，FV的特点是：1）在RL和SL E放电中出现明显的连贯性内在节律，这可能是由于喉网络中的兴奋和增加的相互作用;2）吸气网络中内在节律相互作用的修改;和3）在增强E神经元网络中诱发节律而不出现内在节律。
In precollicular decerebrate and paralyzed cats, respiratory nerve activities were recorded during fictive vocalization (FV), which consisted of a distinctive pattern of1) decreased inspiratory (I) and expiratory (E) phase durations,2) marked increase of phrenic activity and moderate changes of recurrent laryngeal (RL) and superior laryngeal (SL) I activities, and3) massive recruitment of laryngeal and abdominal (ABD; lumbar) E activities. FV was produced by electrical stimulation (100 Hz) in the midbrain periaqueductal gray (PAG) or its putative descending pathways in the ventrolateral pons (VLP). Spectral and correlation analyses revealed three types of effect on fast rhythms during FV.1)I activities: the coherent high-frequency oscillations in I (I-HFO, 60–90 Hz) present in phrenic and RL discharges during the control state did not change qualitatively, but there was an increase of power and a moderate increase (4–10 Hz) of frequency. Sometimes a distinct relatively weak stimulus-locked rhythm appeared.2)RL and SL activities during E: in recruited discharges, a prominent intrinsic rhythm (coherent E-HFOs at 50–70 Hz) appeared; sometimes a distinct relatively strong stimulus-locked rhythm appeared.3)ABD activities during E: this recruited activity had no intrinsic rhythm but had an evoked oscillation locked to the stimulus frequency. Thus FV is characterized by1) appearance of prominent coherent intrinsic rhythms in RL and SL E discharges, which presumably arise as a result of excitation and increased interactions in laryngeal networks;2) modification of intrinsic rhythmic interactions in inspiratory networks; and3) evoked rhythms in augmenting-E neuron networks without occurrence of intrinsic rhythms.