Peripheral and central nervous responses evoked by small water movements in a cephalopod.
Peripheral and central nervous responses evoked by small water movements in a cephalopod.
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头足类动物微小的水运动引起的周围和中枢神经反应。
DOI：
10.1007/bf00218417
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
Bullock,TH
中科院分区：
文献类型：
--
作者：
Bleckmann,H;Budelmann,BU;Bullock,TH
电位记录从表皮头线和从年轻的乌贼，Sepia officinalis，在响应弱水运动的中枢神经系统。1.在0.5-400 Hz的测试范围内，如果电极放置在标题上，正弦水运动会产生多达4个响应分量：（i）正相ON响应;（ii）紧张性频率跟随颤噪响应;（iii）缓慢的负OFF响应;以及（iv）复合神经冲动。2. ON波和微音器电位的幅度取决于刺激频率、刺激幅度和刺激上升时间。100 Hz左右的频率和较短的上升时间在激发强电位方面最有效。最小阈值为100 Hz（18.8微米/秒作为速度）下的0.06微米峰-峰水位移。3.切向球体运动方向的改变（平行于头线）对颤噪电位和神经电位总和的影响很小。4.载波刺激的频率和/或幅度调制在调制的开始和偏移处引起响应，并且在紧张性颤噪响应中引起显著变化。5.诱发电位可以从大脑记录，同时刺激表皮线与弱水运动。脑电位在几个方面不同于头线的电位，并且在频率和振幅调制的转变处显示很少或没有起始波或偏移波。
Potentials were recorded from the epidermal head lines and from the CNS of young cuttlefish, Sepia officinalis, in response to weak water movements. 1. Within the test range 0.5-400 Hz a sinusoidal water movement elicits up to 4 components of response if the electrode is placed on a headline:(i) a positive phasic ON response;(ii) a tonic frequency-following microphonic response;(iii) a slow negative OFF response; and (iv) compound nerve impulses. 2. The amplitude of both the ON wave and the microphonic potential depends on stimulus frequency, stimulus amplitude and stimulus rise time. Frequencies around 100 Hz and short rise times are most effective in eliciting strong potentials. The minimal threshold was 0.06 microns peak-to-peak water displacement at 100 Hz (18.8 microns/s as velocity). 3. Change of direction of tangential sphere movement (parallel vs. across the head lines) has only a small effect on the microphonic and the summed nerve potentials. 4. Frequency and/or amplitude modulations of a carrier stimulus elicit responses at the onset and offset of the modulation and marked changes in the tonic microphonic response. 5. Evoked potentials can be recorded from the brain while stimulating the epidermal lines with weak water movements. The brain potentials differ in several aspects from the potentials of the head lines and show little or no onset or offset wave at the transitions of a frequency and amplitude modulation.