在猫延髓尾端腹外侧的疑后核区域诱发的发声和明显的升压效应。

Vocalization and marked pressor effect evoked from the region of the nucleus retroambigualis in the caudal ventrolateral medulla of the cat.

作者信息

Zhang S P, Davis P J, Carrive P, Bandler R

机构信息

Department of Anatomy, University of Sydney, N.S.W., Australia.

出版信息

Neurosci Lett. 1992 Jun 8;140(1):103-7. doi: 10.1016/0304-3940(92)90692-z.

DOI:10.1016/0304-3940(92)90692-z

PMID:1383887

Abstract

It is well established that the nucleus retroambigualis (NRA) of the cat contains a population of expiratory-related neurons. We report here that in the unanesthetized, decerebrate cat, microinjections of 300-900 pmol of D,L-homocysteic acid within the NRA evoked excitation of laryngeal as well as expiratory muscles, and often pressor responses. Moreover, vocalizations, which did not sound like normal feline vocalizations (i.e., hiss, howl, mew, growl), were evoked from a restricted region of the NRA, 1-3 mm caudal to the obex. The results indicate that in addition to its role in expiration: (i) the NRA plays an important role in the control of laryngeal muscles and the production of vocalization; and (ii) that neurons in the NRA region can modulate arterial pressure.

摘要

众所周知，猫的疑核后核（NRA）包含一群与呼气相关的神经元。我们在此报告，在未麻醉的去大脑猫中，在NRA内微量注射300 - 900皮摩尔的D，L - 高半胱氨酸会引起喉部以及呼气肌的兴奋，并且常常引发升压反应。此外，在距闩尾侧1 - 3毫米的NRA受限区域诱发了发声，这些声音听起来不像正常的猫叫声（即嘶嘶声、嚎叫声、喵喵声、咆哮声）。结果表明，除了其在呼气中的作用外：（i）NRA在喉部肌肉控制和发声产生中起重要作用；（ii）NRA区域的神经元可以调节动脉血压。