INVIVO BUCCAL NERVE ACTIVITY THAT DISTINGUISHES INGESTION FROM REJECTION CAN BE USED TO PREDICT BEHAVIORAL TRANSITIONS IN APLYSIA
INVIVO BUCCAL NERVE ACTIVITY THAT DISTINGUISHES INGESTION FROM REJECTION CAN BE USED TO PREDICT BEHAVIORAL TRANSITIONS IN APLYSIA
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DOI：
10.1007/bf00214712
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发表时间：
1993-02-01
期刊：
影响因子：
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通讯作者：
CHIEL, HJ
中科院分区：
文献类型：
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作者：
MORTON, DW;CHIEL, HJ
1.我们正在研究海兔完全性摄食行为的神经基础，使用完整的、自由移动的动物。视频记录显示，在牙根延长-回缩周期中，牙根闭合的时间构成了摄取(咬合或吞咽)和排斥之间的主要区别。在摄取过程中，神经罩随着它的收缩而关闭。在排斥过程中，随着时间的延长，牙根闭合。我们观察到神经中的两种活动模式，这两种模式可能调节这些神经根的运动。模式I和模式II分别与摄取和排斥有关，并通过神经丛神经活动相对于颊神经2活动开始的时间来区分。当动物喂食聚乙烯管时，摄取与模式I的联系保持不变，聚乙烯管是用来引发排斥反应的同一食物底物。在这种情况下，模式I与吞咽或无网状导管运动有关。大多数从吞咽到排斥的转变发生在模式I之前，其中没有网状管移动，这表明这些转变是可以预测的。我们的数据表明，这两种模式可以用来区分摄入和排斥。
1. We are studying the neural basis of consummatory feeding behavior in Aplysia using intact, freely moving animals.2. Video records show that the timing of radula closure during the radula protraction-retraction cycle constitutes a major difference between ingestion (biting or swallowing) and rejection. During ingestion, the radula is closed as it retracts. During rejection, the radula is closed as it protracts.3. We observed two patterns of activity in nerves which are likely to mediate these radula movements. Patterns I and II are associated with ingestion and rejection, respectively, and are distinguished by the timing of radula nerve activity with respect to the onset of buccal nerve 2 activity.4. The association of ingestion with pattern I is maintained when the animal feeds on a polyethylene tube, the same food substrate used to elicit rejection responses. Under these conditions, pattern I is associated with either swallowing or no net tube movement.5. Most transitions from swallowing to rejection were preceded by one or more occurrences of pattern I in which there was no net tube movement, suggesting that these transitions can be predicted.6. Our data suggest that these two patterns can be used to distinguish ingestion from rejection.