BEHAVIORAL-RESPONSES OF LABORATORY RATS TO PLAYBACK OF 22 KHZ ULTRASONIC CALLS
BEHAVIORAL-RESPONSES OF LABORATORY RATS TO PLAYBACK OF 22 KHZ ULTRASONIC CALLS
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DOI：
10.1016/0031-9384(95)00003-2
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发表时间：
1995-06-01
影响因子：
2.9
通讯作者：
CHIU, EMC
中科院分区：
文献类型：
--
作者：
BRUDZYNSKI, SM;CHIU, EMC
实验证明，刺激大鼠下丘脑视前区前部的胆碱能神经可诱发22kHz超声发声。声学特征的胆碱能诱导发声没有不同的22 kHz的电话在自然情况下发出的，因此，可能有其他同种的行为意义。将脑内注射卡巴胆碱诱导的22 kHz呼叫回放给大鼠，并将其反应与触觉刺激诱导的22 kHz呼叫回放反应和背景噪声反应进行比较。通过加速度传感器测量动物反应作为平均测功活动。平均活动计数没有改变，在介绍声刺激，然而，显着的差异被发现在动物的反应后立即停止的声音。在呈现由触觉刺激或注射卡巴胆碱诱导的22 kHz叫声后，大鼠的活动持续且显着下降。动物对卡巴胆碱引起的呼叫的反应与对触觉刺激引起的呼叫的反应是不可区分的。在背景噪声呈现后或在没有刺激的会话期间，未观察到动物的一般活动的显著变化。结果表明，卡巴胆碱诱导的超声波呼叫具有行为意义的其他同种，并可以作为报警电话以类似的方式自然产生的22 kHz的发声。
It has been demonstrated that cholinergic stimulation of the anterior hypothalamicpreoptic region induces 22 kHz ultrasonic vocalization in rats. Acoustic features of the cholinergically induced vocalization did not differ from those of 22 kHz calls emitted in natural situations and, therefore, could have a behavioural significance for other conspecifics. The 22 kHz calls induced by intracerebral injection of carbachol were played back to rats and their responses were compared with responses to playback of 22 kHz calls induced by tactile stimuli and to those with background noise. Animal responses were measured by an accelerometric sensor as an average ergometric activity. The average activity count was not changed during presentation of acoustic stimuli, however, striking differences were found in animal responses immediately after discontinuation of the sound. Activity of the rats consistently and significantly decreased after presentation of 22 kHz calls induced by tactile stimuli or by injection of carbachol. Animal responses to calls induced by carbachol were indistinguishable from responses to calls induced by tactile stimuli. No significant changes in the general activity of the animals were observed after presentation of the background noise or during the sessions without stimuli. The results demonstrate that carbachol-induced ultrasonic calls have behavioural significance for other conspecifics and could serve as an alarm call in a similar way to naturally produced 22 kHz vocalization.