The Cricket as a Model Organism
The Cricket as a Model Organism
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蟋蟀作为模式生物
DOI：
10.1007/978-4-431-56478-2_10
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Schöneich S
中科院分区：
文献类型：
--
作者：
Schöneich S
In cricket brains a neuropil area in the anterior ventral protocerebrum next to the pedunculus and the α-lobe is involved in the control of singing behaviour.用于歌唱的命令中间神经元在该神经毡中具有树突，而它们的轴突下降到腹神经索。已经确定了双边呼叫歌曲命令神经元，该神经元通过主音尖峰活动驱动歌唱中枢模式发生器。大脑对求爱和竞争歌曲的控制尚未在细胞水平上得到解决。电刺激和药理脑刺激可靠地引起蟋蟀正常和虚构的鸣叫。 The central pattern generating network for singing seems to extend from the metathoracic ganglion complex to the first unfused abdominal ganglion A3.一旦 A3 前面的连接词被切断，蟋蟀立即停止歌唱并且不会恢复。 A3 中已鉴定出开启者中间神经元，它可以修改和重置歌唱运动模式。 The response properties of opener and closer interneurons upon hyperpolarising current injection indicate that post-inhibitory rebound mechanisms may be central to motor pattern generation underlying singing.飞行中间神经元和歌唱中间神经元的记录证明这两种运动模式都是由单独的神经元网络控制的。
In cricket brains a neuropil area in the anterior ventral protocerebrum next to the pedunculus and the α-lobe is involved in the control of singing behaviour. Command interneurons for singing have dendrites in this neuropil, whereas their axon descends towards the ventral nerve cord. A bilateral calling song command neuron has been identified which drives the singing central pattern generator with tonic spike activity. The control of courtship and rivalry song via the brain is not yet resolved at a cellular level. Electrical and pharmacological brain stimulation reliably elicit normal and fictive singing in crickets. The central pattern generating network for singing seems to extend from the metathoracic ganglion complex to the first unfused abdominal ganglion A3. Crickets immediately stop singing and do not recover, once the connectives anterior to A3 are cut. Opener interneurons have been identified in A3, which modify and reset the singing motor pattern. The response properties of opener and closer interneurons upon hyperpolarising current injection indicate that post-inhibitory rebound mechanisms may be central to motor pattern generation underlying singing. Recordings of flight interneurons and singing interneurons prove that both motor patterns are controlled by separate neuronal networks.