SENSORY EVOKED-POTENTIALS IN UNANESTHETIZED UNRESTRAINED CUTTLEFISH - A NEW PREPARATION FOR BRAIN PHYSIOLOGY IN CEPHALOPODS
SENSORY EVOKED-POTENTIALS IN UNANESTHETIZED UNRESTRAINED CUTTLEFISH - A NEW PREPARATION FOR BRAIN PHYSIOLOGY IN CEPHALOPODS
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DOI：
10.1007/bf00217112
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发表时间：
1991-01-01
期刊：
影响因子：
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通讯作者：
BUDELMANN, BU
中科院分区：
文献类型：
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作者：
BULLOCK, TH;BUDELMANN, BU
当墨鱼在一个小范围内自由活动时，多达五个微电极通过短皮下针插入棕乌贼的颅软骨，记录下电位。在持续的自发活动和感觉刺激后观察到复合场电位和单位尖峰。正在进行的活动类似于报道的章鱼，最大功率通常低于20赫兹。振幅变化很大，但没有看到像章鱼那样突然和全球性地关闭或打开。诱发电位，在闪光后局部较大，由几个波组成；第一个波最大，为正，峰值约为35 ms（称为P35），其次是约P75， P95， N110和持续时间超过0.5 s的较小波或振荡。最高跟随频率（电位可以跟随1:1的最高闪烁率），不平均，为bbb15次/秒（20-22℃）；在20/s时，1:1跟随持续1或2秒。平均响应的较低融合频率< 30/s。轻拍罐壁唤起局部的、短暂的、快速的潜能。未发现对空气中主能量为300 Hz的响亮的咔嚓声和音调爆发或浴缸中50-100 μ v /cm的电场有反应。在一些位点上，在超过5/s的一系列闪光结束后，可以看到相对较大的慢速省略刺激电位；根据定义，它们是与事件相关的电位和OFF反应的一种特殊的中心形式。
Up to five microelectrodes inserted through short hypodermic needles in the cranial cartilage of Sepia officinalis recorded potentials while the cuttlefish moved freely in a small enclosure. Compound field potentials and unit spikes were seen during ongoing, spontaneous activity and after sensory stimulation.Ongoing activity resembles that reported for octopus, with maximum power usually below 20 Hz. Amplitude varies greatly but has not been seen to shut off or turn on abruptly and globally as in octopus.Evoked potentials, focally large after flashes of light consist of several waves; the first is largest, positive and peaks at ca. 35 ms (called P35), followed by ca. P75, P95, N110 and smaller waves or oscillations lasting more than 0.5 s. The Upper Following Frequency (highest flashing rate the potentials can follow 1:1), without averaging, is > 15 flashes/s (20-22-degrees-C); at 20/s the 1:1 following lasts for 1 or 2 s. The Lower Fusion Frequency of averaged responses is < 30/s. Gentle tapping of the tank wall evokes local, brief, fast potentials. No responses have been found to loud air-borne clicks and tone bursts with principal energy at 300 Hz or to electric fields in the bath at 50-100-mu-V/cm.In a few loci relatively large slow Omitted Stimulus Potentials have been seen following the end of a train of flashes at more than 5/s; these are by definition event related potentials and a special, central form of OFF response.